Amplify Effect
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Please state which version of Windows you are using,
and the exact three-section version number of Audacity from "Help menu > About Audacity".
Audacity 1.2.x and 1.3.x are obsolete and no longer supported. If you still have those versions, please upgrade at https://www.audacityteam.org/download/.
The old forums for those versions are now closed, but you can still read the archives of the 1.2.x and 1.3.x forums.
Amplify Effect
Are additional losses incurred when using Amplify?
Re: Amplify Effect
Assuming that the track is 32-bit float format (the default), then in normal circumstances no, there are no losses caused by the Amplify effect. Amplify just scales the waveform to a higher or lower level (with 32-bit float precision, which is extremely precise).
In a stupidly extreme case, such as amplifying by -80 dB (which would have to be done in 2 steps because the range of the Amplify effect is -50 to +50 dB), and then amplifying back up again, then yes there would be some loss of precision. (50 dB amplification is equivalent to over 300 times amplification. 80 dB is equivalent to 1000 times amplification.)
In a stupidly extreme case, such as amplifying by -80 dB (which would have to be done in 2 steps because the range of the Amplify effect is -50 to +50 dB), and then amplifying back up again, then yes there would be some loss of precision. (50 dB amplification is equivalent to over 300 times amplification. 80 dB is equivalent to 1000 times amplification.)
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