[pulseaudio-tickets] [Bug 95021] LFE channel not synthesized properly

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Thu Jun 2 02:58:19 UTC 2016


https://bugs.freedesktop.org/show_bug.cgi?id=95021

--- Comment #33 from Raymond <superquad.vortex2 at gmail.com> ---

https://bugzilla.kernel.org/show_bug.cgi?id=107851#c83

it is pulseaudio resampler mix I00 and I02 for O02


(  37.895|   0.000) D: [pulseaudio] resampler.c: Resampler:
(  37.895|   0.000) D: [pulseaudio] resampler.c:   rate 44100 -> 44100 (method
copy)
(  37.895|   0.000) D: [pulseaudio] resampler.c:   format s16le -> s16le
(intermediate s16le)
(  37.895|   0.000) D: [pulseaudio] resampler.c:   channels 2 -> 3 (resampling
2)
(  37.895|   0.000) D: [pulseaudio] resampler.c: Channel matrix:
(  37.895|   0.000) D: [pulseaudio] resampler.c:        I00   I01 
(  37.895|   0.000) D: [pulseaudio] resampler.c:     +------------
(  37.895|   0.000) D: [pulseaudio] resampler.c: O00 | 1.000 0.000
(  37.895|   0.000) D: [pulseaudio] resampler.c: O01 | 0.000 1.000
(  37.895|   0.000) D: [pulseaudio] resampler.c: O02 | 0.500 0.500
(  37.895|   0.000) I: [pulseaudio] remap.c: Using generic matrix remapping
(  37.895|   0.000) D: [pulseaudio] resampler.c:   lfe filter activated (LR4
type), the crossover_freq = 120Hz

and alsa surround21 use route plugin to upmix LFE to both channels 2 and 3


   0.189|   0.000) I: [pulseaudio] alsa-sink.c: Using hardware mute control.
(   0.189|   0.000) D: [pulseaudio] alsa-util.c: snd_pcm_dump():
(   0.189|   0.000) D: [pulseaudio] alsa-util.c: Route conversion PCM
(   0.189|   0.000) D: [pulseaudio] alsa-util.c:   Transformation table:
(   0.189|   0.000) D: [pulseaudio] alsa-util.c:     0 <- 0
(   0.189|   0.000) D: [pulseaudio] alsa-util.c:     1 <- 1
(   0.189|   0.000) D: [pulseaudio] alsa-util.c:     2 <- 2
(   0.189|   0.000) D: [pulseaudio] alsa-util.c:     3 <- 2
(   0.189|   0.000) D: [pulseaudio] alsa-util.c: Its setup is:
(   0.189|   0.000) D: [pulseaudio] alsa-util.c:   stream       : PLAYBACK
(   0.189|   0.000) D: [pulseaudio] alsa-util.c:   access       :
MMAP_INTERLEAVED
(   0.189|   0.000) D: [pulseaudio] alsa-util.c:   format       : S16_LE
(   0.189|   0.000) D: [pulseaudio] alsa-util.c:   subformat    : STD
(   0.189|   0.000) D: [pulseaudio] alsa-util.c:   channels     : 3
(   0.189|   0.000) D: [pulseaudio] alsa-util.c:   rate         : 44100
(   0.189|   0.000) D: [pulseaudio] alsa-util.c:   exact rate   : 44100
(44100/1)
(   0.189|   0.000) D: [pulseaudio] alsa-util.c:   msbits       : 16
(   0.189|   0.000) D: [pulseaudio] alsa-util.c:   buffer_size  : 8192
(   0.189|   0.000) D: [pulseaudio] alsa-util.c:   period_size  : 4096
(   0.189|   0.000) D: [pulseaudio] alsa-util.c:   period_time  : 92879
(   0.189|   0.000) D: [pulseaudio] alsa-util.c:   tstamp_mode  : ENABLE
(   0.189|   0.000) D: [pulseaudio] alsa-util.c:   tstamp_type  : MONOTONIC
(   0.189|   0.000) D: [pulseaudio] alsa-util.c:   period_step  : 1
(   0.189|   0.000) D: [pulseaudio] alsa-util.c:   avail_min    : 7603
(   0.189|   0.000) D: [pulseaudio] alsa-util.c:   period_event : 0
(   0.189|   0.000) D: [pulseaudio] alsa-util.c:   start_threshold  : -1
(   0.189|   0.000) D: [pulseaudio] alsa-util.c:   stop_threshold   :
4611686018427387904
(   0.189|   0.000) D: [pulseaudio] alsa-util.c:   silence_threshold: 0
(   0.189|   0.000) D: [pulseaudio] alsa-util.c:   silence_size : 0
(   0.189|   0.000) D: [pulseaudio] alsa-util.c:   boundary     :
4611686018427387904
(   0.189|   0.000) D: [pulseaudio] alsa-util.c: Slave: Soft volume PCM
(   0.189|   0.000) D: [pulseaudio] alsa-util.c: Control: PCM Playback Volume
(   0.189|   0.000) D: [pulseaudio] alsa-util.c: min_dB: -51
(   0.189|   0.000) D: [pulseaudio] alsa-util.c: max_dB: 0
(   0.189|   0.000) D: [pulseaudio] alsa-util.c: resolution: 256
(   0.189|   0.000) D: [pulseaudio] alsa-util.c: Its setup is:
(   0.189|   0.000) D: [pulseaudio] alsa-util.c:   stream       : PLAYBACK
(   0.189|   0.000) D: [pulseaudio] alsa-util.c:   access       :
MMAP_INTERLEAVED
(   0.189|   0.000) D: [pulseaudio] alsa-util.c:   format       : S16_LE
(   0.189|   0.000) D: [pulseaudio] alsa-util.c:   subformat    : STD
(   0.189|   0.000) D: [pulseaudio] alsa-util.c:   channels     : 4
(   0.189|   0.000) D: [pulseaudio] alsa-util.c:   rate         : 44100
(   0.189|   0.000) D: [pulseaudio] alsa-util.c:   exact rate   : 44100
(44100/1)
(   0.189|   0.000) D: [pulseaudio] alsa-util.c:   msbits       : 16
(   0.189|   0.000) D: [pulseaudio] alsa-util.c:   buffer_size  : 8192
(   0.189|   0.000) D: [pulseaudio] alsa-util.c:   period_size  : 4096
(   0.189|   0.000) D: [pulseaudio] alsa-util.c:   period_time  : 92879
(   0.189|   0.000) D: [pulseaudio] alsa-util.c:   tstamp_mode  : ENABLE
(   0.189|   0.000) D: [pulseaudio] alsa-util.c:   tstamp_type  : MONOTONIC
(   0.189|   0.000) D: [pulseaudio] alsa-util.c:   period_step  : 1
(   0.189|   0.000) D: [pulseaudio] alsa-util.c:   avail_min    : 7603
(   0.189|   0.000) D: [pulseaudio] alsa-util.c:   period_event : 0
(   0.189|   0.000) D: [pulseaudio] alsa-util.c:   start_threshold  : -1
(   0.189|   0.000) D: [pulseaudio] alsa-util.c:   stop_threshold   :
4611686018427387904
(   0.189|   0.000) D: [pulseaudio] alsa-util.c:   silence_threshold: 0
(   0.189|   0.000) D: [pulseaudio] alsa-util.c:   silence_size : 0
(   0.189|   0.000) D: [pulseaudio] alsa-util.c:   boundary     :
4611686018427387904
(   0.189|   0.000) D: [pulseaudio] alsa-util.c: Slave: Hardware PCM card 1
'HDA Intel PCH' device 0 subdevice 0
(   0.189|   0.000) D: [pulseaudio] alsa-util.c: Its setup is:
(   0.189|   0.000) D: [pulseaudio] alsa-util.c:   stream       : PLAYBACK
(   0.189|   0.000) D: [pulseaudio] alsa-util.c:   access       :
MMAP_INTERLEAVED
(   0.189|   0.000) D: [pulseaudio] alsa-util.c:   format       : S16_LE
(   0.189|   0.000) D: [pulseaudio] alsa-util.c:   subformat    : STD
(   0.189|   0.000) D: [pulseaudio] alsa-util.c:   channels     : 4
(   0.189|   0.000) D: [pulseaudio] alsa-util.c:   rate         : 44100
(   0.189|   0.000) D: [pulseaudio] alsa-util.c:   exact rate   : 44100
(44100/1)
(   0.189|   0.000) D: [pulseaudio] alsa-util.c:   msbits       : 16
(   0.189|   0.000) D: [pulseaudio] alsa-util.c:   buffer_size  : 8192
(   0.189|   0.000) D: [pulseaudio] alsa-util.c:   period_size  : 4096
(   0.189|   0.000) D: [pulseaudio] alsa-util.c:   period_time  : 92879

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