Sliding Time Scale/Pitch Shift adjusts high Sampling Rate?

Audacity Help Forum Windows
1

Hello,

I am new to this forum and fairly new to Audacity (love the program!).

I am using Audacity v2.0.3 on a Windows 8 64-bit machine.

I am working with sounds recorded at a very high sampling rate (223214 Hz; for scientific purposes) and I need to transform tempo and pitch independently. I am able to do this with the Sliding Time Scale/Pitch Shift effect, however, when I look at the spectrograms following implementation of this effect all energy above ~20kHz is silenced. Since there are frequency components in my sound over 70 kHz (even after the effect), this is an issue.

I should state that I have changed the default sample rate to 223214 Hz before implementing the effect and that Audacity works just fine with the high sampling rate otherwise.

Is it possible that the Sliding Time Scale/Pitch Shift effect assumes a 44.1 kHz sampling rate and adjusts it accordingly? Not sure what’s going on, but a solution would be greatly appreciated :smiley:

Thank you,
Dan

2

Sliding Time Scale/Pitch Shift is optimised for the audio frequency range (up to 20 kHz).
If you need to stretch frequencies higher than this, change the track rate to 44100 Hz, then apply the effect, then change the track rate back.
To change the track rate, see here: http://manual.audacityteam.org/o/man/track_drop_down_menu.html

3

This worked! Thank you for your help.