Questions about slowing tempo

I am using Audacity 2.1.3. I am listening to an audio and the speaker is speaking too fast. I know that I can use “Playback Speed” to slow his speech, but in addition to doing that, if I also set the percent change in Effect | Change Tempo to -12%, will that change still work if I had changed Playback Speed to 82%. Can they work together? I am trying to find the best way to slow the speaker’s pace.


Whichever way will work to a point, but too much and it will be difficult to understand. You’ll just have to try it and see what works best for you.
There’s no reason why can’t use “Change Tempo” and “Playback Speed” together, but note that “Playback Speed” is only temporary, whereas “Change Tempo” is an effect that permanently changes the audio (though “Ctr + Z” will undo the last used effect).

Thanks Steve.

I did not realize that when I exported my file to MP3 that only my “Change Tempo” change was part of the export.