Does the Amplify effect in Audacity have known bugs?
I have used it before to increase levels, but if I go the other way I find I can still hear the sound with apparently very little increased attenuation down to about -60dB. The results seem somewhat erratic. I know that hearing is non linear (perception wise), but I would expect it to get harder to hear a sample each time I attenuate the waveform. I did manage to get something I couldn't hear, but not quite sure how I did that - not consistently repeatable by a known process.
Perhaps there are number representation issues. I assumed that Audacity would use floating point arithmetic, so should be good to rather low levels.
I have used it before to increase levels, but if I go the other way I find I can still hear the sound with apparently very little increased attenuation down to about -60dB. The results seem somewhat erratic. I know that hearing is non linear (perception wise), but I would expect it to get harder to hear a sample each time I attenuate the waveform. I did manage to get something I couldn't hear, but not quite sure how I did that - not consistently repeatable by a known process.
Perhaps there are number representation issues. I assumed that Audacity would use floating point arithmetic, so should be good to rather low levels.
Comment