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jolaf / radiochronicle

Tool for automatic logging of radio channel activity
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Recording timestamp correction due to latency is needed #5

Open GoogleCodeExporter opened 9 years ago

GoogleCodeExporter commented 9 years ago 
Recording latency should be taken into account when naming an output .wav file.

Simple tests showed that it's not essential, but a careful measurement is
required.

Original issue reported on code.google.com by vmzakhar@gmail.com on 24 May 2010 at 11:25

GoogleCodeExporter commented 9 years ago 
Audio signal from hardware input takes some time to reach the processing 
engine. As a result, a new transmission is detected a bit later than the 
transmission actually started, and the recording file is timestamped wrongly.

Probably this delay can be measured and taken into account, so that file name 
could reflect the correct time when the transmission actually occured.

Probably methods like pyaudio.Stream.get_input_latency() could help in this 
matter.

Original comment by vmzakhar@gmail.com on 6 Nov 2010 at 10:45

GoogleCodeExporter commented 9 years ago 
Issue 8 has been merged into this issue.

Original comment by vmzakhar@gmail.com on 6 Nov 2010 at 10:45

GoogleCodeExporter commented 9 years ago

Original comment by vmzakhar@gmail.com on 6 Nov 2010 at 10:48

GoogleCodeExporter commented 9 years ago

Original comment by vmzakhar@gmail.com on 6 Nov 2010 at 10:51

GoogleCodeExporter commented 9 years ago

Original comment by vmzakhar@gmail.com on 6 Nov 2010 at 10:54