Re: [Linphone-users] linphonec lacks of pauses when write data into .wav files

[Simon Morlat]

Hi,

You are right, the wav recorder records data one after the other and does not 
insert silence periods.
As I have very limited time, there are few chances that I'll fix this one day.
However you can maybe workaround the problem by using a alsa sound card 
normally, and simultaneously use a recording program, such as 'arecord'.
The silence periods corresponding to lost packets are added by the soundcard 
(because a buffer underrun occurs), then the arecord program should record 
them.

Simon

Le Sunday 04 November 2007 11:51:30 Roman Imankulov, vous avez écrit :
> Hi,
>
> I'm trying to emulate a network with packet losses to estimate  sound
> quality with different codecs and with different network conditions. To
> store output data I use linphonec as follows:
>
> echo -ne "record ~/output.wav\nsoundcard use files\n" | ./linphonec -a
>
> Unfortunately, I find out that application don't insert pauses into
> output .wav file. When packet is lost, listener have to hear the silence
> during  this interval, thus .wav file have to be filled by zeroes.
> Instead linphonec writes packets one right after other. I think it's
> quite easy to add into code smth. like:
>
> quiet_interval_length = current_time - size_of_data_packet -
> arrival_time_of_prev_packet
>
> Can I hope that this behaviour will be treated as bug and will be fixed
> sometime?
>
> --
> WBR, Roman Imankulov
> address@hidden
>
>
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