Rec writes to a file I watch the file.
I listen to the sound coming in and watch the file size. There is a period of silence then when volume rises the file is written to. But this introduces a delay I can not afford
I have adjusted the buffer down to 128 ( below that I get constant overrun) I see no change in the file writing....
On Aug 09 14:05:32, shane.blaser@callfire.com wrote:
> Hello I have an application that processes audio as rec writes the file.
Does this mean that rec(1) writes into a pipe
and your application is reading that pipe?
> rec is buffering the data before it writes and I get
> the updates about 2 or 3 seconds late.
How do you know that? How exactly are you reading
what rec(1) is writing?
> I have played with the --buffer pram and I not been able to see a
> difference.
>
> I would like to tell rec to write the data as soon as it gets it or reduce
> the file write buffer size.
That's what --buffer is supposed to do ...
> I have silence detection on
> rec -c 1 -r 8000 --buffer 4096 currentRecording.wav silence 1 0.0001 2.1% 1
> 15.0 2.6%
>
> The writes look like this
>
> Size of currentRecording.wav = 24576 Size of currentRecording.wav = 36864
> *Size* *of* *currentRecording.wav* *=* *45056* *Size* *of* *
> currentRecording.wav* *=* *77824*
The steps are indeed multiples of 4096.
Can you try with other --buffer to see
if the data becomes available to your application
in the chunks that rec(1) is writing?
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