delay between speaker and microphone

[Paixao Julien]

> -----Original Message-----
> From: gstreamer-devel [mailto:gstreamer-devel-
> bounces at lists.freedesktop.org] On Behalf Of siddarthmamidanna
> Sent: Thursday, January 28, 2016 12:00 PM
> To: gstreamer-devel at lists.freedesktop.org
> Subject: RE: delay between speaker and microphone
> 
> Hi Julien,
> Thanks for your response.
> Actually we are measuring the delay in audacity software. by comparing the
> recorded files record_speaker_8000.wav and record_microphone_8000.wav.
> How to implement buffer-time in gstreamer pipeline can you give me an
> example of it Thanks and Regards M.Siddarth

buffer-time is a parameter from alsasrc, be aware that if you change the buffer-time, you might also need to change latency-time.

e.g alsasrc buffer-time=32000 latency-time=16000
This will give a maximum latency for the source of 32ms and a minimum of 16ms.

Be aware that you have also other elements in your pipeline where buffers are also configurable.
e.g filesrc will by default read 4096 bytes per buffer, in your pipeline this is equivalent to 256ms of audio.

Abuse on the use of gst-inspect-1.0 in order to have information about the element properties and its capabilities.
e.g gst-inspect-1.0 alsasrc

Best regards,
Julien.