Displaying 2 results from an estimated 2 matches for "uwide".
Did you mean:
wide
2012 Apr 10
0
Speex Codec Delay Problem
...ello All!
SPEEX introduces an additional delay to the audio data,
I found out by reverse enginiering (it is NOT the lookahead time):
narrow band : delay = 200 - framesize + lookahead = 200 - 160 + 40 = 80
samples
wide band : delay = 400 - framesize + lookahead = 400 - 320 + 143 = 223
samples
uwide band : delay = 800 - framesize + lookahead = 800 - 640 + 349 = 509
samples
To get the timing right, you must skip those samples before you get the
actual audio
data you have feeded into the codec.
Or, better, feed the encoder with (framesize - delay) dummy samples first,
throw away
the entire fir...
2012 Apr 11
0
Speex Codec Delay Problem
...ditional delay to the audio data,
> I found out by reverse enginiering (it is NOT the lookahead time):
>
> narrow band : delay = 200 - framesize + lookahead = 200 - 160 + 40 = 80
> samples
> wide band : delay = 400 - framesize + lookahead = 400 - 320 + 143 = 223
> samples
> uwide band : delay = 800 - framesize + lookahead = 800 - 640 + 349 = 509
> samples
>
> To get the timing right, you must skip those samples before you get the
> actual audio
> data you have feeded into the codec.
> Or, better, feed the encoder with (framesize - delay) dummy samples fir...