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fromsb
2005 May 13
3
Audio quality
...in 8000 16000 32000; do
sox "$base"-48000.wav -r $rate "$base"-$rate.wav
resample -ql
speexenc --vad --dtx --rate $rate "$base"-$rate.wav
"$base"-$rate.spx
speexdec "$base"-$rate.spx "$base"-$rate-fromspx.wav
done
sox "$base"-8000.wav "$base"-8000.gsm
done
3) I listened to them all with Quicktime Player.
From that I determined that a WAV with 32k sampling rate sounds good
to me, but I'm not happy with 8k or 16k. Since adding lossy
compression is...