Re: [Linphone-developers] Reduced mic sample rate increases audio playback delay

[Johan Pascal]

Hi Balder,
yes using audiofilters/device.c table to set specifics parameter for 
your sound card is the correct way.

Unfortunately it looks like the hardware you use have a hard time having 
both recording and playback using 8kHz sampling rate but there is no 
easy way in Linphone to set different sampling rate for recording and 
playback.

johan


On 22/01/15 10:43, Balder Mørk wrote:
> I'm running Linphone on an Android device which will only record sound
> in 8000Hz. To make the microphone work, I added the following line to
> mediastreamer2/src/audiofilters/devices.c:
>
> { "2N", "IndoorTouch", "omap3", 0, 0, 8000 },
>
> This made the microphone work, but it has the side effect of increasing
> audio playback delay from an almost-acceptable 0.8 seconds to almost 2
> seconds (tested using mobile phone -> sip). This is very annoying during
> video calls, as the video has no noticeable delay. Am I using the right
> approach, or is there a better way to override audio recording settings
> without affecting playback?
>
>
> Balder
>
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