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Forum Topic - Queries related to IO-Audio:

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Girisha SG

11/03/2010 1:22 AM

post73393

I have following queries related to IO-Audio  component present in the BSP package provided by QNX for Mistral 
Omap3530EVM.

1. Does the software mixer present in IO-Audio has sample rate converter also ?
2. In the .build file I could see that the IO-Audio is invoked with 'omap35xx-twl4030' driver, How can I disable the 
mixer and hence the sample rate converter module ?
I have tried invkoing the IO-Audio with'-o disable_sw_mixer' option but if I play 16KHz file it still plays properly and
 hence I conclude that the option did not make any difference in the behaviour(As I unerstand the ound card supports 
only 44.1KHz & 48KHZ and hence there will be a sample rate conversion from 16 to 48 KHz).

Please let me know your comments as it is quite important for me.

Aleksandar Ristovski(deleted)

11/03/2010 8:38 AM

post73405

Re: Queries related to IO-Audio

This question should have been asked in bsp forum (CC-ed).

---
Aleksandar

On Wed, 2010-11-03 at 01:22 -0400, Girisha SG wrote:
> I have following queries related to IO-Audio  component present in the
> BSP package provided by QNX for Mistral Omap3530EVM.
> 
> 1. Does the software mixer present in IO-Audio has sample rate
> converter also ?
> 2. In the .build file I could see that the IO-Audio is invoked with
> 'omap35xx-twl4030' driver, How can I disable the mixer and hence the
> sample rate converter module ?
> I have tried invkoing the IO-Audio with'-o disable_sw_mixer' option
> but if I play 16KHz file it still plays properly and hence I conclude
> that the option did not make any difference in the behaviour(As I
> unerstand the ound card supports only 44.1KHz & 48KHZ and hence there
> will be a sample rate conversion from 16 to 48 KHz).
> 
> Please let me know your comments as it is quite important for me.
> 
> 
> 
> _______________________________________________
> 
> General
> http://community.qnx.com/sf/go/post73393
> 
> 
>

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