[LAU] Awkward intermittent bug

David Hugh-Jones davidhughjones at gmail.com
Fri Feb 20 02:37:59 EST 2009


Yes, the mike definitely only works at 16000 Hz. At least, that's what
it reports.

But this shouldn't be a problem, right? pulseaudio should resample it
to 44100 Hz. That doesn't seem to be happening, though.



2009/2/19 Patrick Shirkey <pshirkey at boosthardware.com>:
>
>
> David Hugh-Jones wrote:
>>
>> I should add that starting pulseaudio from the command line gives:
>>
>> W: alsa-util.c: Device hw:1 doesn't support 44100 Hz, changed to 16000 Hz.
>> W: alsa-util.c: Device hw:1 doesn't support 2 channels, changed to 1.
>>
>> where hw:1 is my mike. The same works whatever I put in
>> /etc/pulse/daemon.conf. I guess the mike just only provides one sample
>> rate. So, how can I make the rest of my system etc. use 16000 Hz?
>>
>>
>
> IIRC,
>
> You can get the full list of sample rates supported by running:
>
> lsusb -v
>
>
>
>> 2009/2/19 David Hugh-Jones <davidhughjones at gmail.com>:
>>
>>>
>>> That sounds about right... it isn't actually just skype, I have the
>>> same problem recording sound in audacity.
>>>
>>> Can anyone point me to a way to set the recording frequency for my USB
>>> mike?
>>>
>>> Cheers
>>> David
>>>
>>> 2009/2/19 drew Roberts <zotz at 100jamz.com>:
>>>
>>>>
>>>> Sounds like what I have had happen when my sound card was set for one
>>>> frequency and my program for another. (This is a general comment, I have
>>>> never used skype.)
>>>>
>>>> drew
>>>>
>>>> On Thursday 19 February 2009 11:17:15 David Hugh-Jones wrote:
>>>>
>>>>>
>>>>> Hello all
>>>>>
>>>>> I've been trying to fix this for months on and off and have had no
>>>>> luck. I'm afraid it's Skype-related, but I hope there is some general
>>>>> interest.
>>>>>
>>>>> My problem is that usually, when I record from my USB webcam
>>>>> microphone (a creative Live! USB cam), the pitch is shifted upwards so
>>>>> I sound like on helium.
>>>>>
>>>>> But, sometimes, this doesn't happen. I can't identify the difference.
>>>>>
>>>>> Can anyone suggest what I should be looking for? I tried grepping
>>>>> /sys/snd*/parameters and comparing them for when the mike works and
>>>>> when it doesn't; they are identical.
>>>>>
>>>>> My kernel is 2.6.17-12; Alsa version 1.0.17; a generic Ubuntu Intrepid
>>>>> setup, using PulseAudio.
>>>>>
>>>>> Cheers
>>>>> David
>>>>> _______________________________________________
>>>>> Linux-audio-user mailing list
>>>>> Linux-audio-user at lists.linuxaudio.org
>>>>> http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user
>>>>>
>>>>> !DSPAM:499d948476961087120581!
>>>>>
>>>>
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>>>>
>>>>
>>
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>
> --
> --
> Patrick Shirkey
> Boost Hardware Ltd
>
>



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