[Asterisk-Dev] Re: 16 KHz audio ?

Steve Underwood steveu at coppice.org
Sun Dec 19 05:10:04 MST 2004


Eric Bart wrote:

>>WMME == Windows MultiMedia Extensions == the API you're using..
>>
>>    
>>
>>>Maybe some USB mike drivers do not support high sampling freq, but
>>>they do support 8KHz.
>>>      
>>>
>>I don't know if the drivers do this, or windows internal mixer stuff 
>>does the resampling,
>>    
>>
>
>Resampling is consuming quite a lot of CPU power and the WMME is 
>quite old. 
>  
>
On any modern CPU you would hardly notice the compute required for high 
quality resampling of just one channel.

Regards,
Steve




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