FreeLists / wdmaudiodev / [wdmaudiodev] Re: USB and ADPCM data format

["DJ Sisolak" <dsisolak@xxxxxxxxxxxxxxxxxxxxxx>]

Hello Raph,

 

2 or 3 bytes a cycle should still work. Again, without the benefit of
testing, one can never be sure.

 

DJ Sisolak

Microsoft Corp.

 

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

 

 

________________________________

From: wdmaudiodev-bounce@xxxxxxxxxxxxx
[mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of Raphael Lamy 
Sent: Tuesday, March 23, 2004 1:14 AM
To: wdmaudiodev@xxxxxxxxxxxxx
Subject: [wdmaudiodev] Re: USB and ADPCM data format

 

Dear All,

 

My bandwidth is limited and I would like to use a ADPCM operating at
24Kbits/s or maybe 16Kbits/s. 

Can I use one from these one with USBAudio.sys ?

 

Thanks In advance

Raph

 

 

-----Original Message-----
From: wdmaudiodev-bounce@xxxxxxxxxxxxx
[mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of DJ Sisolak
Sent: lundi 22 mars 2004 18:38
To: wdmaudiodev@xxxxxxxxxxxxx
Subject: [wdmaudiodev] Re: USB and ADPCM data format

        Hello Raph,

         

        The short answer to your question is yes, the ADPCM format is
supported in USBAudio.sys though we have not had any devices to
thoroughly test it with.

         

        Thanks,

        DJ Sisolak

        Microsoft Corp.

         

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

         

        
________________________________


        From: wdmaudiodev-bounce@xxxxxxxxxxxxx
[mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of Raphael Lamy 
        Sent: Monday, March 22, 2004 8:49 AM
        To: wdmaudiodev@xxxxxxxxxxxxx
        Subject: [wdmaudiodev] USB and ADPCM data format

         

        Dear All, 

         

        I develop a USB audio device and I need to use a ADPCM data
format.   

        I just need to know if it is possible to use this format without
to write a custom driver (maybe just using usbaudio.sys and Ks.sys). 

        Which are the real datas to send from the USB chip to windows  ?


         

        Thanks in advance

        Raph