Frequency Change Question

[ctmcg]

The way to calculate the % change is:
100 x (new frequency - original frequency)/original frequency
so for 440 Hz > 432 Hz that is:
100 x (432 - 440)/440 = 100 x 8/440 = -1.818182

For some reason in the latest version of Audacity it won't allow a user to 'type' in the 'from' and 'to' frequencies in the 'Change Pitch' Dialog, only copy and paste. If you want to 'convert' your music into 432hz=A using Audacity, I'm not sure 'Change Speed' is the solution..... USE 'Change Pitch' ... It previously to allow a user to alter these 'From' and 'To' fields (without having to copy/paste, which is a total pain, why not allow typing in the fields as well anymore? Are we trying to deter people from conversions?). So yes, it works just as well to manually calculate the frequency difference in percentage and enter that in the corresponding field as well, BUT not in the 'Change Speed' Dialog. It needs to be done in the 'Change Pitch without Changing Tempo' Dialog. I am not saying it is 'bad' to change speed. It might even be better than using the pitch only. Not sure.... What we should probably try is testing it using a nice sine wave recording fed into a cymatics device to observe the resultant geometry BEFORE and AFTER 'conversion'. I, however, so far have only used the 'Change Pitch without Changing Tempo' to 'convert' my A=440hz tuned recordings into the latter (A=432hz). Anyone with a cymatics device that reads this ought to consider doing this experiment. Create a recording of scales of notes (strong sine wave style notes) based on A=440hz, record it, Then 'convert' using 'Change speed' and 'convert' using 'Change Pitch'. Then observe all versions of recorded scales on the cymatics device. Whichever creates the most well defined geometrical waveforms on the cymatics device is the best 'conversion'.

Wholeness.

[steve]

For some reason in the latest version of Audacity it won't allow a user to 'type' in the 'from' and 'to' frequencies in the 'Change Pitch' Dialog,

In the current version of the Change Pitch effect, the "From frequency" is not intended to be editable. The fact that it "looks" like it should be editable and will accept pasted values is a bug. The fact that you can't type to change it is intended. The "from frequency" is intended to be an automatically detected frequency value based on the analysis of the first part of the selection.

We realize that this behaviour is confusing and not very helpful, so it is being changed in the next version of Audacity. This effect is currently being worked on.