[pulseaudio-discuss] Pulseaudio sound quality problem on ARM

[Andrej Šimko]

Hello,

we have still problems with voice quality, for now we are restarting
pulseaudio every 3 hours, it seems that is enough for good quality and
no distortion.
We are looking for somebody who will help us with it, of course we will
pay for it.

Problem is only on ARM and with echo-cancel, after a while the sound
goes crappy and only restart of pulseaudio help ( unload module for echo
cancel and load it back didnt help).

Please contact us.

Regards,
Andrej

On 28.10.2014 10:39, Andrej Šimko wrote:
> Hello everybody,
>
> we have problem with quality of sound with pulseaudio used with
> freeswitch with portaudio modul, which gets worse(crackling) after
> random time (couple of hours). When we restart pulseaudio with our own
> script (in attachment pulseaudio-restart and pulseaudio-restore)
> everything gets back to normal. Everything is running on gentoo and
> installed like this:
> [I] media-sound/pulseaudio
>      Available versions:  [M]2.1-r1 [M]4.0 5.0-r2 (~)5.0-r3 {+X +alsa
> +asyncns avahi bluetooth +caps dbus doc equalizer +gdbm +glib gnome gtk
> ipv6 jack libsamplerate lirc neon +orc oss qt4 realtime ssl system-wide
> systemd tcpd test +udev +webrtc-aec xen zeroconf ABI_MIPS="n32 n64 o32"
> ABI_PPC="32 64" ABI_S390="32 64" ABI_X86="32 64 x32"}
>      Installed versions:  5.0-r3(11:07:32 AM 10/21/2014)(X alsa asyncns
> bluetooth caps dbus equalizer gdbm glib gnome libsamplerate neon qt4
> realtime ssl tcpd udev webrtc-aec -doc -gtk -ipv6 -jack -lirc -orc -oss
> -system-wide -systemd -test -xen -zeroconf ABI_MIPS="-n32 -n64 -o32"
> ABI_PPC="-32 -64" ABI_S390="-32 -64" ABI_X86="-32 -64 -x32")
>      Homepage:            http://www.pulseaudio.org/
>      Description:         A networked sound server with an advanced
> plugin system
>
> Our hardware: Olimex A20
> Cpu info:
> Processor    : ARMv7 Processor rev 4 (v7l)
> processor    : 0
> BogoMIPS    : 954.36
>
> processor    : 1
> BogoMIPS    : 957.64
>
> Features    : swp half thumb fastmult vfp edsp neon vfpv3 tls vfpv4
> idiva idivt
> CPU implementer    : 0x41
> CPU architecture: 7
> CPU variant    : 0x0
> CPU part    : 0xc07
> CPU revision    : 4
>
> Hardware    : sun7i
> Revision    : 0000
> Serial        : 0000000000000000
>
> /etc/pulseaudio/daemon.conf ... in attachment
> /etc/pulse/default.pa  ... in attachment
> users .pulse/default.pa ... in attachment
> pacmd info output ... in attachment
>
> We tried, to change aec method from speex to webrtc, only difference is,
> that cpu "eats" 5% less with speex. We tried also tsched=0, but it gets
> worse ...
> Does anybody know how to solve this and have clear sound all the time?
> Problem is with pulseaudio, that we know for sure, we have the same
> exactly setup on 6 pc's in different locations.
>
> Thank you!
> Andrej