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Old 20th November 2009, 07:42 PM   #1
petasis is offline petasis  Greece
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Join Date: Nov 2009
Default USB soundcard that can drive a usb headset?

Hi all,

I am searching for a chip that can accept stereo audio and drive a usb soundcard (i.e. usb headset). Is such a chip available?

What I want to do, is the following:

Image the usb port of a pc. In this port, I can connect a stereo headset with a usb connector (which has an embedded soundcard). What I want to build is something that can be put in between the pc and the stereo headset, and allow me to mix a stereo signal with what the pc sends to the headset.
What is the easiest approach to implement something like this?

For example, on the side that connects to the pc I can connect a TI PCM2906B, which will give me two stereo channels (speakers/microphone).

But since I have mixed the sound, what should be placed on the end the usb headset will be plugged in? Something that will be able to pass sound & receive microphone sound to/from the usb headset?
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Old 21st November 2009, 01:48 AM   #2
wwenze is offline wwenze  Singapore
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Join Date: Mar 2008
Won't work.

And the PCM2906 is redundant.

You can only do the mixing in your pc.

I'd just plug something into the line-in. Provided your USB soundcard has a line-in.

Last edited by wwenze; 21st November 2009 at 01:51 AM.
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Old 21st November 2009, 07:29 AM   #3
bbp is offline bbp  China
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Join Date: Sep 2005
that means you need audio I/O chips >_<
I remembered that a sound card of MUTU was based on a single 1394/USB audio I/O chip,but I forgot the detail
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calm down and enjoy your time in experiment
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Old 21st November 2009, 10:49 AM   #4
petasis is offline petasis  Greece
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Join Date: Nov 2009
Yes, I know that this will be very easy if I had a pc, but all this will not be plugged into a pc (unfortunately) but on a device that runs a proprietary firmware. Of course I can use a pc in between (that will do easily what I want), but this will be an overkill. This is why I am looking for small in size & power consumption alternatives...
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Old 21st November 2009, 11:12 PM   #5
wwenze is offline wwenze  Singapore
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Does the headset work with your computer using generic drivers?
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Old 23rd November 2009, 08:35 AM   #6
petasis is offline petasis  Greece
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Yes, it does...
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