Re: [Alsa-user] driver approach

[<ale...@gm...>]

> If by 'capture delay' you mean 'the maximum delay between a sample passing
> thru the DAC and the time it is available to be read in user space', and
> by 
> 'blocking delay' you mean the period time, then the two should be equal
> (ignoring interrupt and proces scheduling time).

Yes - but the problem is that it is not possible to choose only one period.
With the minimum if 2 periods the capture delay is twice the blocking delay.

One example :

With 32kHz, 128 Samples/Frame the blocking delay is 4ms high so in fact I
can send 128-sample-blocks each 4ms to my remote destination but

it takes 2 periods resulting in 8ms to actually capture the signal and my
approach is to get rid of this additional delay.

Comments ?

-- A l e x
 

-- 
Dipl.-Ing. Alexander Carôt
Email : Ale...@Ca...
Tel.: +49 (0)177 5719797

phd-candidate at www.isnm.de

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