[pulseaudio-discuss] issue playing 44.1 Khz stereo using Pulseaudio

Harsha, Priya priya.harsha at intel.com
Tue Sep 22 02:34:32 PDT 2009


After removing pulseaudio modules from /etc/pulse/default.pa, here is the log.

When I play a file using cmd "aplay -Dhw file.wav", following is the log

aplay -Dhw s_44k_16.wav
Playing WAVE 's_44k_16.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo
[moblin at localhost wav]$ pacmd ll s
Welcome to PulseAudio! Use "help" for usage information.
>>> Memory blocks currently allocated: 1, size: 64.0 KiB.
Memory blocks allocated during the whole lifetime: 5812, size: 10.8 MiB.
Memory blocks imported from other processes: 0, size: 0 B.
Memory blocks exported to other processes: 0, size: 0 B.
Total sample cache size: 0 B.
Default sample spec: s16le 2ch 44100Hz
Default channel map: front-left,front-right
Default sink name: alsa_output.pci_8086_800_sound_card_0
Default source name: alsa_output.pci_8086_800_sound_card_0.monitor
Memory blocks of type POOL: 1 allocated/2930 accumulated.
Memory blocks of type POOL_EXTERNAL: 0 allocated/0 accumulated.
Memory blocks of type APPENDED: 0 allocated/0 accumulated.
Memory blocks of type USER: 0 allocated/0 accumulated.
Memory blocks of type FIXED: 0 allocated/1551 accumulated.
Memory blocks of type IMPORTED: 0 allocated/1331 accumulated.
9 module(s) loaded.
    index: 0
        name: <module-device-restore>
        argument: <>
        used: -1
        load once: yes
        properties:
                module.author = "Lennart Poettering"
                module.description = "Automatically restore the volume/mute state of devices"
                module.version = "0.9.15"
    index: 1
        name: <module-stream-restore>
        argument: <>
        used: -1
        load once: yes
        properties:
                module.author = "Lennart Poettering"
                module.description = "Automatically restore the volume/mute/device state of streams"
                module.version = "0.9.15"
    index: 2
        name: <module-card-restore>
        argument: <>
        used: -1
        load once: yes
        properties:
                module.author = "Lennart Poettering"
                module.description = "Automatically restore profile of cards"
                module.version = "0.9.15"
    index: 3
        name: <module-native-protocol-unix>
        argument: <>
        used: -1
        load once: no
        properties:
                module.author = "Lennart Poettering"
                module.description = "Native protocol (UNIX sockets)"
                module.version = "0.9.15"
    index: 4
        name: <module-suspend-on-idle>
        argument: <timeout=0>
        used: -1
        load once: yes
        properties:
                module.author = "Lennart Poettering"
                module.description = "When a sink/source is idle for too long, suspend it"
                module.version = "0.9.15"
    index: 5
        name: <module-alsa-card>
        argument: <device_id=0 name=pci_8086_800_sound_card_0 card_name=alsa_card.pci_8086_800_sound_card_0 tsched=0>
        used: 0
        load once: no
        properties:
                module.author = "Lennart Poettering"
                module.description = "ALSA Card"
                module.version = "0.9.15"
    index: 6
        name: <module-hal-detect>
        argument: <tsched=0>
        used: -1
        load once: yes
        properties:
                module.author = "Shahms King"
                module.description = "Detect available audio hardware and load matching drivers"
                module.version = "0.9.15"
    index: 7
        name: <module-bluetooth-discover>
        argument: <>
        used: -1
        load once: yes
        properties:
                module.author = "Joao Paulo Rechi Vita"
                module.description = "Detect available bluetooth audio devices and load bluetooth audio drivers"
                module.version = "0.9.15"
    index: 8
        name: <module-cli-protocol-unix>
        argument: <>
        used: -1
        load once: no
        properties:
                module.author = "Lennart Poettering"
                module.description = "Command line interface protocol (UNIX sockets)"
                module.version = "0.9.15"
1 sink(s) available.
  * index: 0
        name: <alsa_output.pci_8086_800_sound_card_0>
        driver: <module-alsa-card.c>
        flags: HARDWARE HW_MUTE_CTRL HW_VOLUME_CTRL LATENCY
        state: SUSPENDED
        volume: 0:  75%
                balance 0.00
        base volume: 100%
        volume steps: 127
        muted: no
        current latency: 0.00 ms
        max request: 8 KiB
        max rewind: 8 KiB
        monitor source: 0
        sample spec: s16le 1ch 44100Hz
        channel map: mono
                     Mono
        used by: 0
        linked by: 0
        fixed latency: 0.00 ms
        card: 0 <alsa_card.pci_8086_800_sound_card_0>
        module: 5
        properties:
                alsa.resolution_bits = "16"
                alsa.mixer_element = "PCM"
                device.api = "alsa"
                device.class = "sound"
                alsa.class = "generic"
                alsa.subclass = "generic-mix"
                alsa.name = "Intel MAD"
                alsa.id = "1"
                alsa.subdevice = "0"
                alsa.subdevice_name = "subdevice #0"
                alsa.device = "0"
                alsa.card = "0"
                alsa.card_name = "Intel MAD"
                alsa.long_card_name = ""
                device.bus = "pci"
                device.vendor.id = "8086"
                device.vendor.name = "Intel Corporation"
                device.product.id = "0800"
                device.bus_path = "/devices/pci0000:00/0000:00:00.1/spi0.8/sound/card0"
                hal.udi = "/org/freedesktop/Hal/devices/pci_8086_800_sound_card_0"
                hal.product = " Sound Card"
                hal.card_id = ""
                device.string = "hw:0"
                device.buffering.buffer_size = "8816"
                device.buffering.fragment_size = "2204"
                device.access_mode = "mmap"
                device.profile.name = "analog-mono"
                device.profile.description = "Analog Mono"
                device.description = "Intel MAD"
                device.icon_name = "audio-card-pci"
1 source(s) available.
  * index: 0
        name: <alsa_output.pci_8086_800_sound_card_0.monitor>
        driver: <module-alsa-card.c>
        flags: DECIBEL_VOLUME LATENCY
        state: SUSPENDED
        volume: 0: 100%
                0: 0.00 dB
                balance 0.00
        base volume: 100%
                     0.00 dB
        volume steps: 65537
        muted: no
        current latency: 0.00 ms
        max rewind: 8 KiB
        sample spec: s16le 1ch 44100Hz
        channel map: mono
                     Mono
        used by: 0
        linked by: 0
        fixed latency: 0.00 ms
        monitor_of: 0
        card: 0 <alsa_card.pci_8086_800_sound_card_0>
        module: 5
        properties:
                device.description = "Monitor of Intel MAD"
                device.class = "monitor"
                alsa.card = "0"
                alsa.card_name = "Intel MAD"
                alsa.long_card_name = ""
                device.bus = "pci"
                device.vendor.id = "8086"
                device.vendor.name = "Intel Corporation"
                device.product.id = "0800"
                device.bus_path = "/devices/pci0000:00/0000:00:00.1/spi0.8/sound/card0"
                hal.udi = "/org/freedesktop/Hal/devices/pci_8086_800_sound_card_0"
                hal.product = " Sound Card"
                hal.card_id = ""
                device.string = "0"
                device.icon_name = "audio-card-pci"
2 client(s) logged in.
    index: 1
        driver: <protocol-native.c>
        owner module: 3
        properties:
                application.name = "GNOME Volume Control"
                native-protocol.peer = "UNIX socket client"
                native-protocol.version = "15"
                application.id = "org.gnome.VolumeControl"
                application.icon_name = "multimedia-volume-control"
                application.version = "2.26.1"
                application.process.id = "527"
                application.process.user = "moblin"
                application.process.host = "localhost"
                application.process.binary = "gnome-settings-daemon"
                application.language = "en_US.UTF-8"
                window.x11.display = ":0.0"
                application.process.machine_id = "a1dd546ade50bac44e748a4e7c668d82"
                application.process.session_id = "a1dd546ade50bac44e748a4e7c668d82-2087097379.245279-125663197"
    index: 8
        driver: <cli.c>
        owner module: 8
        properties:
                application.name = "UNIX socket client"
1 card(s) available.
    index: 0
        name: <alsa_card.pci_8086_800_sound_card_0>
        driver: <module-alsa-card.c>
        owner module: 5
        properties:
                alsa.card = "0"
                alsa.card_name = "Intel MAD"
                alsa.long_card_name = ""
                device.bus = "pci"
                device.vendor.id = "8086"
                device.vendor.name = "Intel Corporation"
                device.product.id = "0800"
                device.bus_path = "/devices/pci0000:00/0000:00:00.1/spi0.8/sound/card0"
                hal.udi = "/org/freedesktop/Hal/devices/pci_8086_800_sound_card_0"
                hal.product = " Sound Card"
                hal.card_id = ""
                device.string = "0"
                device.description = "Intel MAD"
                device.icon_name = "audio-card-pci"
        profiles:
                output-analog-mono: Output Analog Mono (priority 100)
                off: Off (priority 0)
        active profile: <output-analog-mono>
        sinks:
                alsa_output.pci_8086_800_sound_card_0/#0: Intel MAD
        sources:
                alsa_output.pci_8086_800_sound_card_0.monitor/#0: Monitor of Intel MAD
0 sink input(s) available.
0 source outputs(s) available.
0 cache entrie(s) available.
>>> [moblin at localhost wav]$
When I play a file using cmd "paplay file.wav", following is the log

paplay s_44k_16.wav
[moblin at localhost wav]$ pacmd ls
Welcome to PulseAudio! Use "help" for usage information.
>>> Memory blocks currently allocated: 1, size: 64.0 KiB.
Memory blocks allocated during the whole lifetime: 9434, size: 17.6 MiB.
Memory blocks imported from other processes: 0, size: 0 B.
Memory blocks exported to other processes: 0, size: 0 B.
Total sample cache size: 0 B.
Default sample spec: s16le 2ch 44100Hz
Default channel map: front-left,front-right
Default sink name: alsa_output.pci_8086_800_sound_card_0
Default source name: alsa_output.pci_8086_800_sound_card_0.monitor
Memory blocks of type POOL: 1 allocated/4735 accumulated.
Memory blocks of type POOL_EXTERNAL: 0 allocated/0 accumulated.
Memory blocks of type APPENDED: 0 allocated/0 accumulated.
Memory blocks of type USER: 0 allocated/0 accumulated.
Memory blocks of type FIXED: 0 allocated/2570 accumulated.
Memory blocks of type IMPORTED: 0 allocated/2129 accumulated.
9 module(s) loaded.
    index: 0
        name: <module-device-restore>
        argument: <>
        used: -1
        load once: yes
        properties:
                module.author = "Lennart Poettering"
                module.description = "Automatically restore the volume/mute state of devices"
                module.version = "0.9.15"
    index: 1
        name: <module-stream-restore>
        argument: <>
        used: -1
        load once: yes
        properties:
                module.author = "Lennart Poettering"
                module.description = "Automatically restore the volume/mute/device state of streams"
                module.version = "0.9.15"
    index: 2
        name: <module-card-restore>
        argument: <>
        used: -1
        load once: yes
        properties:
                module.author = "Lennart Poettering"
                module.description = "Automatically restore profile of cards"
                module.version = "0.9.15"
    index: 3
        name: <module-native-protocol-unix>
        argument: <>
        used: -1
        load once: no
        properties:
                module.author = "Lennart Poettering"
                module.description = "Native protocol (UNIX sockets)"
                module.version = "0.9.15"
    index: 4
        name: <module-suspend-on-idle>
        argument: <timeout=0>
        used: -1
        load once: yes
        properties:
                module.author = "Lennart Poettering"
                module.description = "When a sink/source is idle for too long, suspend it"
                module.version = "0.9.15"
    index: 5
        name: <module-alsa-card>
        argument: <device_id=0 name=pci_8086_800_sound_card_0 card_name=alsa_card.pci_8086_800_sound_card_0 tsched=0>
        used: 0
        load once: no
        properties:
                module.author = "Lennart Poettering"
                module.description = "ALSA Card"
                module.version = "0.9.15"
    index: 6
        name: <module-hal-detect>
        argument: <tsched=0>
        used: -1
        load once: yes
        properties:
                module.author = "Shahms King"
                module.description = "Detect available audio hardware and load matching drivers"
                module.version = "0.9.15"
    index: 7
        name: <module-bluetooth-discover>
        argument: <>
        used: -1
        load once: yes
        properties:
                module.author = "Joao Paulo Rechi Vita"
                module.description = "Detect available bluetooth audio devices and load bluetooth audio drivers"
                module.version = "0.9.15"
    index: 8
        name: <module-cli-protocol-unix>
        argument: <>
        used: -1
        load once: no
        properties:
                module.author = "Lennart Poettering"
                module.description = "Command line interface protocol (UNIX sockets)"
                module.version = "0.9.15"
1 sink(s) available.
  * index: 0
        name: <alsa_output.pci_8086_800_sound_card_0>
        driver: <module-alsa-card.c>
        flags: HARDWARE HW_MUTE_CTRL HW_VOLUME_CTRL LATENCY
        state: SUSPENDED
        volume: 0:  75%
                balance 0.00
        base volume: 100%
        volume steps: 127
        muted: no
        current latency: 0.00 ms
        max request: 8 KiB
        max rewind: 8 KiB
        monitor source: 0
        sample spec: s16le 1ch 44100Hz
        channel map: mono
                     Mono
        used by: 0
        linked by: 0
        fixed latency: 0.00 ms
        card: 0 <alsa_card.pci_8086_800_sound_card_0>
        module: 5
        properties:
                alsa.resolution_bits = "16"
                alsa.mixer_element = "PCM"
                device.api = "alsa"
                device.class = "sound"
                alsa.class = "generic"
                alsa.subclass = "generic-mix"
                alsa.name = "Intel MAD"
                alsa.id = "1"
                alsa.subdevice = "0"
                alsa.subdevice_name = "subdevice #0"
                alsa.device = "0"
                alsa.card = "0"
                alsa.card_name = "Intel MAD"
                alsa.long_card_name = ""
                device.bus = "pci"
                device.vendor.id = "8086"
                device.vendor.name = "Intel Corporation"
                device.product.id = "0800"
                device.bus_path = "/devices/pci0000:00/0000:00:00.1/spi0.8/sound/card0"
                hal.udi = "/org/freedesktop/Hal/devices/pci_8086_800_sound_card_0"
                hal.product = " Sound Card"
                hal.card_id = ""
                device.string = "hw:0"
                device.buffering.buffer_size = "8816"
                device.buffering.fragment_size = "2204"
                device.access_mode = "mmap"
                device.profile.name = "analog-mono"
                device.profile.description = "Analog Mono"
                device.description = "Intel MAD"
                device.icon_name = "audio-card-pci"
1 source(s) available.
  * index: 0
        name: <alsa_output.pci_8086_800_sound_card_0.monitor>
        driver: <module-alsa-card.c>
        flags: DECIBEL_VOLUME LATENCY
        state: SUSPENDED
        volume: 0: 100%
                0: 0.00 dB
                balance 0.00
        base volume: 100%
                     0.00 dB
        volume steps: 65537
        muted: no
        current latency: 0.00 ms
        max rewind: 8 KiB
        sample spec: s16le 1ch 44100Hz
        channel map: mono
                     Mono
        used by: 0
        linked by: 0
        fixed latency: 0.00 ms
        monitor_of: 0
        card: 0 <alsa_card.pci_8086_800_sound_card_0>
        module: 5
        properties:
                device.description = "Monitor of Intel MAD"
                device.class = "monitor"
                alsa.card = "0"
                alsa.card_name = "Intel MAD"
                alsa.long_card_name = ""
                device.bus = "pci"
                device.vendor.id = "8086"
                device.vendor.name = "Intel Corporation"
                device.product.id = "0800"
                device.bus_path = "/devices/pci0000:00/0000:00:00.1/spi0.8/sound/card0"
                hal.udi = "/org/freedesktop/Hal/devices/pci_8086_800_sound_card_0"
                hal.product = " Sound Card"
                hal.card_id = ""
                device.string = "0"
                device.icon_name = "audio-card-pci"
2 client(s) logged in.
    index: 1
        driver: <protocol-native.c>
        owner module: 3
        properties:
                application.name = "GNOME Volume Control"
                native-protocol.peer = "UNIX socket client"
                native-protocol.version = "15"
                application.id = "org.gnome.VolumeControl"
                application.icon_name = "multimedia-volume-control"
                application.version = "2.26.1"
                application.process.id = "527"
                application.process.user = "moblin"
                application.process.host = "localhost"
                application.process.binary = "gnome-settings-daemon"
                application.language = "en_US.UTF-8"
                window.x11.display = ":0.0"
                application.process.machine_id = "a1dd546ade50bac44e748a4e7c668d82"
                application.process.session_id = "a1dd546ade50bac44e748a4e7c668d82-2087097379.245279-125663197"
    index: 10
        driver: <cli.c>
        owner module: 8
        properties:
                application.name = "UNIX socket client"
1 card(s) available.
    index: 0
        name: <alsa_card.pci_8086_800_sound_card_0>
        driver: <module-alsa-card.c>
        owner module: 5
        properties:
                alsa.card = "0"
                alsa.card_name = "Intel MAD"
                alsa.long_card_name = ""
                device.bus = "pci"
                device.vendor.id = "8086"
                device.vendor.name = "Intel Corporation"
                device.product.id = "0800"
                device.bus_path = "/devices/pci0000:00/0000:00:00.1/spi0.8/sound/card0"
                hal.udi = "/org/freedesktop/Hal/devices/pci_8086_800_sound_card_0"
                hal.product = " Sound Card"
                hal.card_id = ""
                device.string = "0"
                device.description = "Intel MAD"
                device.icon_name = "audio-card-pci"
        profiles:
                output-analog-mono: Output Analog Mono (priority 100)
                off: Off (priority 0)
        active profile: <output-analog-mono>
        sinks:
                alsa_output.pci_8086_800_sound_card_0/#0: Intel MAD
        sources:
                alsa_output.pci_8086_800_sound_card_0.monitor/#0: Monitor of Intel MAD
0 sink input(s) available.
0 source outputs(s) available.
0 cache entrie(s) available.
>>> [moblin at localhost wav]$

Thanks,
Harsha.

>-----Original Message-----
>From: Harsha, Priya
>Sent: Sunday, September 20, 2009 1:58 PM
>To: 'pulseaudio-discuss at mail.0pointer.de'
>Cc: 'lennart at poettering.net'
>Subject: Re: [pulseaudio-discuss] issue playing 44.1 Khz stereo using
>Pulseaudio
>
>>> Hi,
>>>
>>> When I play a 44.1Khz stereo file through aplay, the
>>> file is smooth and clear. When the same 44.1 Khz file
>>> is played through paplay or any player using Pulseaudio
>>> the playback is noisy. I see that the stereo file is
>>> converted into mono and then played. Could there be an
>>> issue because of the conversion?
>>
>>Hmm, could you please run "pacmd ls" once when you do this via aplay
>>and once via paplay and provide me with both outputs?
>>
>
>After playing aplay -Dhw <44.1stereo.wav>, following is the output:
>Welcome to PulseAudio! Use "help" for usage information.
>>>> Memory blocks currently allocated: 1, size: 64.0 KiB.
>Memory blocks allocated during the whole lifetime: 1, size: 64.0 KiB.
>Memory blocks imported from other processes: 0, size: 0 B.
>Memory blocks exported to other processes: 0, size: 0 B.
>Total sample cache size: 0 B.
>Default sample spec: s16le 2ch 44100Hz
>Default channel map: front-left,front-right
>Default sink name: MRST_NULL_SINK
>Default source name: MRST_NULL_SINK.monitor
>Memory blocks of type POOL: 1 allocated/1 accumulated.
>Memory blocks of type POOL_EXTERNAL: 0 allocated/0 accumulated.
>Memory blocks of type APPENDED: 0 allocated/0 accumulated.
>Memory blocks of type USER: 0 allocated/0 accumulated.
>Memory blocks of type FIXED: 0 allocated/0 accumulated.
>Memory blocks of type IMPORTED: 0 allocated/0 accumulated.
>10 module(s) loaded.
>    index: 0
>       name: <module-device-restore>
>       argument: <>
>       used: -1
>       load once: yes
>       properties:
>               module.author = "Lennart Poettering"
>               module.description = "Automatically restore the
>volume/mute state of devices"
>               module.version = "0.9.15"
>    index: 1
>       name: <module-stream-restore>
>       argument: <>
>       used: -1
>       load once: yes
>       properties:
>               module.author = "Lennart Poettering"
>               module.description = "Automatically restore the
>volume/mute/device state of streams"
>               module.version = "0.9.15"
>    index: 2
>       name: <module-card-restore>
>       argument: <>
>       used: -1
>       load once: yes
>       properties:
>               module.author = "Lennart Poettering"
>               module.description = "Automatically restore profile of
>cards"
>               module.version = "0.9.15"
>    index: 3
>       name: <module-native-protocol-unix>
>       argument: <>
>       used: -1
>       load once: no
>       properties:
>               module.author = "Lennart Poettering"
>               module.description = "Native protocol (UNIX sockets)"
>               module.version = "0.9.15"
>    index: 4
>       name: <module-suspend-on-idle>
>       argument: <>
>       used: -1
>       load once: yes
>       properties:
>               module.author = "Lennart Poettering"
>               module.description = "When a sink/source is idle for too
>long, suspend it"
>               module.version = "0.9.15"
>    index: 5
>       name: <module-x11-publish>
>       argument: <>
>       used: -1
>       load once: no
>       properties:
>               module.author = "Lennart Poettering"
>               module.description = "X11 credential publisher"
>               module.version = "0.9.15"
>    index: 6
>       name: <module-audiomanager>
>       argument: <conf_path="/etc/pulse/policy.conf">
>       used: -1
>       load once: no
>       properties:
>               module.author = "www.intel.com"
>               module.description = "Audiomanager for moblin"
>               module.version = "0.1"
>    index: 7
>       name: <module-null-sink>
>       argument: <sink_name="MRST_NULL_SINK" >
>       used: 0
>       load once: no
>       properties:
>               module.author = "Lennart Poettering"
>               module.description = "Clocked NULL sink"
>               module.version = "0.9.15"
>    index: 8
>       name: <module-mrst-specific>
>       argument: <tsched=0>
>       used: -1
>       load once: yes
>       properties:
>               module.author = "Long Bu"
>               module.description = "Platform specific module for MRST"
>               module.version = "0.1"
>    index: 9
>       name: <module-cli-protocol-unix>
>       argument: <>
>       used: -1
>       load once: no
>       properties:
>               module.author = "Lennart Poettering"
>               module.description = "Command line interface protocol
>(UNIX sockets)"
>               module.version = "0.9.15"
>1 sink(s) available.
>  * index: 0
>       name: <MRST_NULL_SINK>
>       driver: <module-null-sink.c>
>       flags: DECIBEL_VOLUME LATENCY FLAT_VOLUME DYNAMIC_LATENCY
>       state: SUSPENDED
>       volume: 0: 100% 1: 100%
>               0: 0.00 dB 1: 0.00 dB
>               balance 0.00
>       base volume: 100%
>                    0.00 dB
>       volume steps: 65537
>       muted: no
>       current latency: 0.00 ms
>       max request: 344 KiB
>       max rewind: 344 KiB
>       monitor source: 0
>       sample spec: s16le 2ch 44100Hz
>       channel map: front-left,front-right
>                    Stereo
>       used by: 0
>       linked by: 0
>       configured latency: 0.00 ms; range is 0.50 .. 10000.00 ms
>       module: 7
>       properties:
>               device.description = "Null Output"
>               device.class = "abstract"
>               device.icon_name = "audio-card"
>1 source(s) available.
>  * index: 0
>       name: <MRST_NULL_SINK.monitor>
>       driver: <module-null-sink.c>
>       flags: DECIBEL_VOLUME LATENCY DYNAMIC_LATENCY
>       state: SUSPENDED
>       volume: 0: 100% 1: 100%
>               0: 0.00 dB 1: 0.00 dB
>               balance 0.00
>       base volume: 100%
>                    0.00 dB
>       volume steps: 65537
>       muted: no
>       current latency: 0.00 ms
>       max rewind: 344 KiB
>       sample spec: s16le 2ch 44100Hz
>       channel map: front-left,front-right
>                    Stereo
>       used by: 0
>       linked by: 0
>       configured latency: 0.00 ms; range is 0.50 .. 10000.00 ms
>       monitor_of: 0
>       module: 7
>       properties:
>               device.description = "Monitor of Null Output"
>               device.class = "monitor"
>               device.icon_name = "audio-input-microphone"
>2 client(s) logged in.
>    index: 0
>       driver: <protocol-native.c>
>       owner module: 3
>       properties:
>               application.name = "GNOME Volume Control"
>               native-protocol.peer = "UNIX socket client"
>               native-protocol.version = "15"
>               application.id = "org.gnome.VolumeControl"
>               application.icon_name = "multimedia-volume-control"
>               application.version = "2.26.1"
>               application.process.id = "502"
>               application.process.user = "moblin"
>               application.process.host = "localhost"
>               application.process.binary = "gnome-settings-daemon"
>               application.language = "en_US.UTF-8"
>               window.x11.display = ":0.0"
>               application.process.machine_id =
>"7bd56646c12e20c29698aa777c5c98c0"
>               application.process.session_id =
>"7bd56646c12e20c29698aa777c5c98c0-2086834182.937627-920203249"
>    index: 1
>       driver: <cli.c>
>       owner module: 9
>       properties:
>               application.name = "UNIX socket client"
>0 card(s) available.
>0 sink input(s) available.
>0 source outputs(s) available.
>0 cache entrie(s) available.
>
>
>After playing paplay <44.1stereo.wav>, following is the output:
>
>Welcome to PulseAudio! Use "help" for usage information.
>>>> Memory blocks currently allocated: 1, size: 64.0 KiB.
>Memory blocks allocated during the whole lifetime: 10444, size: 22.2
>MiB.
>Memory blocks imported from other processes: 0, size: 0 B.
>Memory blocks exported to other processes: 0, size: 0 B.
>Total sample cache size: 0 B.
>Default sample spec: s16le 2ch 44100Hz
>Default channel map: front-left,front-right
>Default sink name: alsa_card0device0.output
>Default source name: alsa_card0device0.output.monitor
>Memory blocks of type POOL: 1 allocated/4808 accumulated.
>Memory blocks of type POOL_EXTERNAL: 0 allocated/0 accumulated.
>Memory blocks of type APPENDED: 0 allocated/0 accumulated.
>Memory blocks of type USER: 0 allocated/0 accumulated.
>Memory blocks of type FIXED: 0 allocated/3247 accumulated.
>Memory blocks of type IMPORTED: 0 allocated/2389 accumulated.
>11 module(s) loaded.
>    index: 0
>       name: <module-device-restore>
>       argument: <>
>       used: -1
>       load once: yes
>       properties:
>               module.author = "Lennart Poettering"
>               module.description = "Automatically restore the
>volume/mute state of devices"
>               module.version = "0.9.15"
>    index: 1
>       name: <module-stream-restore>
>       argument: <>
>       used: -1
>       load once: yes
>       properties:
>               module.author = "Lennart Poettering"
>               module.description = "Automatically restore the
>volume/mute/device state of streams"
>               module.version = "0.9.15"
>    index: 2
>       name: <module-card-restore>
>       argument: <>
>       used: -1
>       load once: yes
>       properties:
>               module.author = "Lennart Poettering"
>               module.description = "Automatically restore profile of
>cards"
>               module.version = "0.9.15"
>    index: 3
>       name: <module-native-protocol-unix>
>       argument: <>
>       used: -1
>       load once: no
>       properties:
>               module.author = "Lennart Poettering"
>               module.description = "Native protocol (UNIX sockets)"
>               module.version = "0.9.15"
>    index: 4
>       name: <module-suspend-on-idle>
>       argument: <>
>       used: -1
>       load once: yes
>       properties:
>               module.author = "Lennart Poettering"
>               module.description = "When a sink/source is idle for too
>long, suspend it"
>               module.version = "0.9.15"
>    index: 5
>       name: <module-x11-publish>
>       argument: <>
>       used: -1
>       load once: no
>       properties:
>               module.author = "Lennart Poettering"
>               module.description = "X11 credential publisher"
>               module.version = "0.9.15"
>    index: 6
>       name: <module-audiomanager>
>       argument: <conf_path="/etc/pulse/policy.conf">
>       used: -1
>       load once: no
>       properties:
>               module.author = "www.intel.com"
>               module.description = "Audiomanager for moblin"
>               module.version = "0.1"
>    index: 7
>       name: <module-alsa-card>
>       argument: <device_id=0 name=pci_8086_800_sound_card_0
>card_name=alsa_card0device0 tsched=0
>sink_name=alsa_card0device0.output
>source_name=alsa_card0device0.input>
>       used: 0
>       load once: no
>       properties:
>               module.author = "Lennart Poettering"
>               module.description = "ALSA Card"
>               module.version = "0.9.15"
>    index: 8
>       name: <module-null-sink>
>       argument: <sink_name="MRST_NULL_SINK" >
>       used: 0
>       load once: no
>       properties:
>               module.author = "Lennart Poettering"
>               module.description = "Clocked NULL sink"
>               module.version = "0.9.15"
>    index: 9
>       name: <module-mrst-specific>
>       argument: <tsched=0>
>       used: -1
>       load once: yes
>       properties:
>               module.author = "Long Bu"
>               module.description = "Platform specific module for MRST"
>               module.version = "0.1"
>    index: 10
>       name: <module-cli-protocol-unix>
>       argument: <>
>       used: -1
>       load once: no
>       properties:
>               module.author = "Lennart Poettering"
>               module.description = "Command line interface protocol
>(UNIX sockets)"
>               module.version = "0.9.15"
>2 sink(s) available.
>  * index: 0
>       name: <alsa_card0device0.output>
>       driver: <module-alsa-card.c>
>       flags: HARDWARE HW_MUTE_CTRL HW_VOLUME_CTRL LATENCY
>       state: SUSPENDED
>       volume: 0:  75%
>               balance 0.00
>       base volume: 100%
>       volume steps: 127
>       muted: no
>       current latency: 0.00 ms
>       max request: 8 KiB
>       max rewind: 8 KiB
>       monitor source: 0
>       sample spec: s16le 1ch 44100Hz
>       channel map: mono
>                    Mono
>       used by: 0
>       linked by: 0
>       fixed latency: 0.00 ms
>       card: 0 <alsa_card0device0>
>       module: 7
>       properties:
>               alsa.resolution_bits = "16"
>               alsa.mixer_element = "PCM"
>               device.api = "alsa"
>               device.class = "sound"
>               alsa.class = "generic"
>               alsa.subclass = "generic-mix"
>               alsa.name = "Intel MAD"
>               alsa.id = "1"
>               alsa.subdevice = "0"
>               alsa.subdevice_name = "subdevice #0"
>               alsa.device = "0"
>               alsa.card = "0"
>               alsa.card_name = "Intel MAD"
>               alsa.long_card_name = ""
>               device.bus = "pci"
>               device.vendor.id = "8086"
>               device.vendor.name = "Intel Corporation"
>               device.product.id = "0800"
>               device.bus_path =
>"/devices/pci0000:00/0000:00:00.1/spi0.8/sound/card0"
>               hal.udi =
>"/org/freedesktop/Hal/devices/pci_8086_800_sound_card_0"
>               hal.product = " Sound Card"
>               hal.card_id = ""
>               device.string = "hw:0"
>               device.buffering.buffer_size = "8816"
>               device.buffering.fragment_size = "2204"
>               device.access_mode = "mmap"
>               device.profile.name = "analog-mono"
>               device.profile.description = "Analog Mono"
>               device.description = "Intel MAD"
>               device.icon_name = "audio-card-pci"
>    index: 1
>       name: <MRST_NULL_SINK>
>       driver: <module-null-sink.c>
>       flags: DECIBEL_VOLUME LATENCY FLAT_VOLUME DYNAMIC_LATENCY
>       state: SUSPENDED
>       volume: 0: 100% 1: 100%
>               0: 0.00 dB 1: 0.00 dB
>               balance 0.00
>       base volume: 100%
>                    0.00 dB
>       volume steps: 65537
>       muted: no
>       current latency: 0.00 ms
>       max request: 344 KiB
>       max rewind: 344 KiB
>       monitor source: 1
>       sample spec: s16le 2ch 44100Hz
>       channel map: front-left,front-right
>                    Stereo
>       used by: 0
>       linked by: 0
>       configured latency: 0.00 ms; range is 0.50 .. 10000.00 ms
>       module: 8
>       properties:
>               device.description = "Null Output"
>               device.class = "abstract"
>               device.icon_name = "audio-card"
>2 source(s) available.
>  * index: 0
>       name: <alsa_card0device0.output.monitor>
>       driver: <module-alsa-card.c>
>       flags: DECIBEL_VOLUME LATENCY
>       state: SUSPENDED
>       volume: 0: 100%
>               0: 0.00 dB
>               balance 0.00
>       base volume: 100%
>                    0.00 dB
>       volume steps: 65537
>       muted: no
>       current latency: 0.00 ms
>       max rewind: 8 KiB
>       sample spec: s16le 1ch 44100Hz
>       channel map: mono
>                    Mono
>       used by: 0
>       linked by: 0
>       fixed latency: 0.00 ms
>       monitor_of: 0
>       card: 0 <alsa_card0device0>
>       module: 7
>       properties:
>               device.description = "Monitor of Intel MAD"
>               device.class = "monitor"
>               alsa.card = "0"
>               alsa.card_name = "Intel MAD"
>               alsa.long_card_name = ""
>               device.bus = "pci"
>               device.vendor.id = "8086"
>               device.vendor.name = "Intel Corporation"
>               device.product.id = "0800"
>               device.bus_path =
>"/devices/pci0000:00/0000:00:00.1/spi0.8/sound/card0"
>               hal.udi =
>"/org/freedesktop/Hal/devices/pci_8086_800_sound_card_0"
>               hal.product = " Sound Card"
>               hal.card_id = ""
>               device.string = "0"
>               device.icon_name = "audio-card-pci"
>    index: 1
>       name: <MRST_NULL_SINK.monitor>
>       driver: <module-null-sink.c>
>       flags: DECIBEL_VOLUME LATENCY DYNAMIC_LATENCY
>       state: SUSPENDED
>       volume: 0: 100% 1: 100%
>               0: 0.00 dB 1: 0.00 dB
>               balance 0.00
>       base volume: 100%
>                    0.00 dB
>       volume steps: 65537
>       muted: no
>       current latency: 0.00 ms
>       max rewind: 344 KiB
>       sample spec: s16le 2ch 44100Hz
>       channel map: front-left,front-right
>                    Stereo
>       used by: 0
>       linked by: 0
>       configured latency: 0.00 ms; range is 0.50 .. 10000.00 ms
>       monitor_of: 1
>       module: 8
>       properties:
>               device.description = "Monitor of Null Output"
>               device.class = "monitor"
>               device.icon_name = "audio-input-microphone"
>2 client(s) logged in.
>    index: 0
>       driver: <protocol-native.c>
>       owner module: 3
>       properties:
>               application.name = "GNOME Volume Control"
>               native-protocol.peer = "UNIX socket client"
>               native-protocol.version = "15"
>               application.id = "org.gnome.VolumeControl"
>               application.icon_name = "multimedia-volume-control"
>               application.version = "2.26.1"
>               application.process.id = "502"
>               application.process.user = "moblin"
>               application.process.host = "localhost"
>               application.process.binary = "gnome-settings-daemon"
>               application.language = "en_US.UTF-8"
>               window.x11.display = ":0.0"
>               application.process.machine_id =
>"7bd56646c12e20c29698aa777c5c98c0"
>               application.process.session_id =
>"7bd56646c12e20c29698aa777c5c98c0-2086834182.937627-920203249"
>    index: 6
>       driver: <cli.c>
>       owner module: 10
>       properties:
>               application.name = "UNIX socket client"
>1 card(s) available.
>    index: 0
>       name: <alsa_card0device0>
>       driver: <module-alsa-card.c>
>       owner module: 7
>       properties:
>               alsa.card = "0"
>               alsa.card_name = "Intel MAD"
>               alsa.long_card_name = ""
>               device.bus = "pci"
>               device.vendor.id = "8086"
>               device.vendor.name = "Intel Corporation"
>               device.product.id = "0800"
>               device.bus_path =
>"/devices/pci0000:00/0000:00:00.1/spi0.8/sound/card0"
>               hal.udi =
>"/org/freedesktop/Hal/devices/pci_8086_800_sound_card_0"
>               hal.product = " Sound Card"
>               hal.card_id = ""
>               device.string = "0"
>               device.description = "Intel MAD"
>               device.icon_name = "audio-card-pci"
>       profiles:
>               output-analog-mono: Output Analog Mono (priority 100)
>               off: Off (priority 0)
>       active profile: <output-analog-mono>
>       sinks:
>               alsa_card0device0.output/#0: Intel MAD
>       sources:
>               alsa_card0device0.output.monitor/#0: Monitor of Intel MAD
>0 sink input(s) available.
>0 source outputs(s) available.
>0 cache entrie(s) available.
>>>> [moblin at localhost root]$
>
>>Lennart
>>



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