USB HID Audio

[TheDeveloper]

I have to develop an USB device which will take the sound of the computer (like a line out) out on windows xp/vista. If you take a standard audio divice (like USB speaker or usb audio converter), you have to activate the device as standard sound output to hear something. In this case, your other speakers don't work anymore.

Is there any possibility in the USB HID audio profile to do something it will not add a device like a new sound card but only add a speaker or line out in parallel and you have not to activate it ?

PS : it has to run without installing a new driver in Windows.

HID does not do audio streams. HID can expose audio /controls/ like volume
+/-, mute, etc, but not an actual sound card like device.

d

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"TheDeveloper" <TheDeveloper.403knb@DoNotSpam.com> wrote in message
news:TheDeveloper.403knb@DoNotSpam.com...
>
> I have to develop an USB device which will take the sound of the
> computer (like a line out) out on windows xp/vista. If you take a
> standard audio divice (like USB speaker or usb audio converter), you
> have to activate the device as standard sound output to hear something.
> In this case, your other speakers don't work anymore.
>
> Is there any possibility in the USB HID audio profile to do something
> it will not add a device like a new sound card but only add a speaker or
> line out in parallel and you have not to activate it ?
>
> PS : it has to run without installing a new driver in Windows.
>
>
> --
> TheDeveloper
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> TheDeveloper's Profile: http://forums.techarena.in/members/144501.htm
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> http://forums.techarena.in
>

[TheDeveloper]

Which USB profile do I need for my application. Is it possible to take the sound out of the computer like I wrote ?

look at the usb audio class which can conver audio input and output

d

--

This posting is provided "AS IS" with no warranties, and confers no rights.


"TheDeveloper" <TheDeveloper.4051fb@DoNotSpam.com> wrote in message
news:TheDeveloper.4051fb@DoNotSpam.com...
>
> Which USB profile do I need for my application. Is it possible to take
> the sound out of the computer like I wrote ?
>
>
> --
> TheDeveloper
> ------------------------------------------------------------------------
> TheDeveloper's Profile: http://forums.techarena.in/members/144501.htm
> View this thread:
> http://forums.techarena.in/windows-d...rs/1258720.htm
>
> http://forums.techarena.in
>