Hi all,
I know that Audacity has some changing pitch effects, but I would like to suggest a pitch vending effect, for example to pitch shift a recording around the time to make special effects, etc, and it could be manipulated using text like the text envelope of David R.Sky. What do you think about that? Thanks a lot!
The Audacity “time track” feature is similar to your description, but it changes pitch & tempo , ( not just pitch ).
Yes, but it appears it is not accesible with screen readers, and I’d loock for something which could be accesed for everyone. Yes, I mean changing the time and pitch simultaneously, I forget to mean about that.
The “Sliding Time Scale / Pitch Shift” effect should be accessible: http://manual.audacityteam.org/o/man/sliding_time_scale_pitch_shift.html:
David Sky made a plugin called “turntable warping” …
http://wiki.audacityteam.org/wiki/Nyquist_Effect_Plug-ins#Turntable_Warping_MS
It just linearly speeds-up or slows-down the track , similar to a record-turntable starting-up or slowing down.
“turntable warping” is not as controllable an effect as “Sliding Time Scale / Pitch Shift”,
however “turntable warping” has the advantage it doesn’t sound computery , example attached …
Well, I thought it could be something to change the time and pitch simultaneously (similar the last example) but for example with different envelope points, so we might change the time and pitch of various wais, and not necesarily in a lineal way.
This can directly be implemented in the text-envelope plug-in - or rather a duplicate of it.
The result will be a bit queer though.
You could enter the values as pitches or as speed factors.
The simple algorithm changes both at the same time.
Thus, if you enter 200 % speed, the pitch will be one octave higher and the duration half as long.
This is relatively easy to code, but you want be very happy, I guess.
Robert
The last example was “turntable warping”, which just slows down or speeds up the playback.
Bear-in-mind when the playback-speed is changed the duration of the track changes.
[ “Sliding Time Scale / Pitch Shift” has the advantage over “turntable-warping” in that gradual changes in pitch are possible whilst maintaining the original duration ].