[alsa-devel] volume scaling of usb audio class headset

Sean McNamara smcnam at gmail.com
Sat Oct 25 17:00:16 CEST 2008

I've had success with Plantronics headsets. In particular, the
Plantronics DSP-500 works well. I've tested it with numerous ALSA
releases, from 1.0.14 - 1.0.17 and some post-1.0.17 GIT builds. I've
never had a mixer problem with it.

This is just *me* speaking, of course, not alsa-project... any implied
endorsement is my personal one alone ;-)


On Sat, Oct 25, 2008 at 5:16 AM, Jelle de Jong
<jelledejong at powercraft.nl> wrote:
> Sean McNamara wrote:
>> There is a *huge* (83 replies) thread in the alsa-devel ML archives
>> about this problem. Lennart Poettering raised the issue regarding his
>> Logitech external USB speakers.
>> http://article.gmane.org/gmane.linux.alsa.devel/52524
>> Sort through the replies to see if you can make any sense out of the
>> workarounds, patches, and so on that resulted from this discussion. If
>> possible, try the latest GIT alsa-driver and alsa-lib.
>> Sean
>> On Fri, Oct 24, 2008 at 1:35 PM, Jelle de Jong
>> <jelledejong at powercraft.nl> wrote:
>>> Hello everybody,
>>> I got a question, I got a few usb headsets that seem to apply to the usb
>>> audio class and the volume scale is way to big with alsa. with the
>>> control on 10 of the 100 you are almost getting deaf. So my question is
>>> how does alsa make an scaling for such devices and how to fix it so that
>>> the full range can be used in a normal volume spectrum.
>>> Thank in advance,
>>> Jelle
> Thank you Sean for responding to the question, it seems I was not the
> only one with this issue. I got one more following question, which usb
> headset and usb audio adapters can I buy right now that are not effected
> by this issue? Or should I just wait until the upcoming releases that
> will hopefully fix the problem for all usb audio devices, or is this
> false hope?
> Best regards,
> Jelle

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