volume scaling of usb audio class headset

volume scaling of usb audio class headset

[Jelle de Jong]

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

Re: volume scaling of usb audio class headset

[Sean McNamara]

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@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
> _______________________________________________
> Alsa-devel mailing list
> Alsa-devel@alsa-project.org
> http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
>

Re: volume scaling of usb audio class headset

[Jelle de Jong]

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@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

Re: volume scaling of usb audio class headset

[Sean McNamara]

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 ;-)

Sean



On Sat, Oct 25, 2008 at 5:16 AM, Jelle de Jong
<jelledejong@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@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
>

Re: volume scaling of usb audio class headset

[Jelle de Jong]

Sean McNamara wrote:
> 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 ;-)
> 
> Sean
> 

Thank you for you comments, anybody else got experiences with other usb
headsets?

Hmmm, I got some Plantronics USB .Audio 510 Headsets and they are kind
of bad. They have wrong dB initialization, incorrect bandwidth
allocation when connected to usb hubs but this can also be an kernel
usb-audio and/or usbcore bug. And are build out of 3 usb interfaces, 2x
usb audio and one hid device (speakers, mic, and not functional uinput
keypad)

I think I will see if I can get my hands on some Plantronics or Logitech
usb headset.

Kind regards,

Jelle

> 
> 
> On Sat, Oct 25, 2008 at 5:16 AM, Jelle de Jong
> <jelledejong@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@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
>>