[pulseaudio-discuss] Pulse Audio 4.0 gets killed by 300 Hz tone...never recovers
rob.krakora at messagenetsystems.com
Mon Jun 24 14:50:30 PDT 2013
If I play 300HZ.wav sampled at 44.1K with straight ALSA 1.0.25 it sounds
On Mon, Jun 24, 2013 at 5:49 PM, Robert Krakora <
rob.krakora at messagenetsystems.com> wrote:
> OK, I took the 300HZ.wav file and retested locally with Asterisk 11.4 out
> of the equation. It is sampled at 44.1K and motorboats with
> 'resample-method' set to any value. If I convert the file to 8K it then
> plays fine with 'resample-method' set to any value. I am confused.
> On Mon, Jun 24, 2013 at 5:15 PM, Robert Krakora <
> rob.krakora at messagenetsystems.com> wrote:
>> I had 'resample-method' set to 'speex-float-1' when it was previously set
>> to the default which I believe is 'speex-float-3'. I meant to set it to
>> 'speex-float-10' to see if the "motor-boating"
>> would go away...looks like I forgot the '0'. The wave files over SIP
>> via Asterisk 11.4 now sound really smooth going from 44.1->8->44.1...maybe
>> it was the up-sampling that was killing me. With a better re-sample
>> algorithm the motor-boating appears to have disappeared with only a
>> sacrifice of 15% CPU on the dual core Atom with which I am working. If
>> this was indeed the problem, I am going to feel really stupid getting you
>> guys involved. :-( Thanks for your prompt responses.
>> Best Regards,
>> On Mon, Jun 24, 2013 at 3:25 PM, Thomas Martitz <kugel at rockbox.org>wrote:
>>> Am 24.06.2013 21:03, schrieb Tanu Kaskinen:
>>> On Mon, 2013-06-24 at 11:36 -0400, Robert Krakora wrote:
>>>>> Basically, the 300Hz tone "motor boats" when played over SIP via
>>>>> Every tone that previously played well over SIP via Asterisk then also
>>>>> "motor boats".
>>>> (Please don't top-post.)
>>>> If you record from the alsa sink while this motor-boating is happening,
>>>> is the audio in the recorded file fine? You can record with for example
>>>> this command:
>>>> parecord --device=NAME_OF_THE_MONITOR_**SOURCE > ~/tmp/test.wav
>>>> Replace NAME_OF_THE_MONITOR_SOURCE with the name of the monitor source.
>>>> You can list the available sources with "pactl list sources short",
>>>> hopefully you're able to figure out which of the sources is the correct
>>>> one (it's one of those that end with ".monitor").
>>> And if not you could feed the recorded file to paplay with different
>>> sample rates to see if resampling isn't done correctly somewhere.
>>> Best regards
>>> pulseaudio-discuss mailing list
>>> pulseaudio-discuss at lists.**freedesktop.org<pulseaudio-discuss at lists.freedesktop.org>
>> Rob Krakora
>> MessageNet Systems
>> 101 East Carmel Dr. Suite 105
>> Carmel, IN 46032
>> (317)566-1677 Ext 212
>> (317)663-0808 Fax
> Rob Krakora
> MessageNet Systems
> 101 East Carmel Dr. Suite 105
> Carmel, IN 46032
> (317)566-1677 Ext 212
> (317)663-0808 Fax
101 East Carmel Dr. Suite 105
Carmel, IN 46032
(317)566-1677 Ext 212
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