You can try this:
1. select the audio that you want to transpose.
2. Copy and paste the following line into the Nyquist prompt and press
OK (or better still, debug):
(print (sref-inverse (s-abs *track*) 0.1))
This gives you the time from the start of the selection until the
first sample that exceeds 0.1 or -20 dB. It's in seconds and fractions
3. Apply Kerovee.
4. Run the Nyquist prompt again.
Check by how much the value has changed.
I don't think the Audacity pitch-shift is suited for this since it
doesn't care about voice formants, no matter what quality you chose.
On 22/07/2020, Justin Trevino <jtrevino@xxxxxxxxxxxxxxx> wrote:
Thank you. I did try that first but I didn't see the high quality
stretching check box so the results were not usable. I'll look again.
That may very well get me there.
On 7/22/2020 2:54 AM, David Bailes wrote:
I don't know how to estimate the delay using kerovee effect.
However, have you tried audacity's change pitch effect? If you want to
drop by an octave, set the percent change in frequency to -50, and
check the "use high quality stretching" check box. As far as I can
tell, this effect doesn't introduce a delay.
On Tue, 21 Jul 2020 at 23:56, Justin Trevino <jtrevino@xxxxxxxxxxxxxxx
Hey, friends, this is Justin Trevino. I have used kerovee to drop
vocals down an octave. After applying this effect the vocals are
delayed by a few milliseconds. Rather than try and figure it out by
ear, I'm hoping someone can tell me just how much this effect
track so I can snip that amount of time off the front of each track.
I'm not using audacity to record my project. I'm flying these tracks
back in to an alesis hd24 and it would make things a lot easier if
would line up when I put them back in.
The audacity4blind web site is at
Subscribe and unsubscribe information, message archives,
Audacity keyboard commands, and more...
To unsubscribe from audacity4blind, send an email to
with subject line