25 Sep
2012
25 Sep
'12
8:22 a.m.
Hello,
I have samples here, single-note recordings from instruments, that need tuning.
I am looking for a permanent/destructive way to do that.
I can do the batch processing part myself so I only need a hint how to do it for one
file.
The file(s) are nearly correctly tuned and I already know what it is supposed to be, if
that helps.
Example: I have a file resembling the midi a4 which should be 440hz, but maybe it is 430
to 450.
So the optimal input would be: "Tune this file to a4" where the analysis of the
actual frequency is done by a program.
Quality is the top priority. Since the tuning is very fine I don't care if the speed
of the recording changes or not. I take what sounds best.
So, any command line tool available for that? If not a GUI tool is fine as well.
Nils
25 Sep
25 Sep
8:34 a.m.
On 25 September 2012 08:21, Nils Gey <list(a)nilsgey.de> wrote:
Hello,
I have samples here, single-note recordings from instruments, that need tuning.
I am looking for a permanent/destructive way to do that.
I can do the batch processing part myself so I only need a hint how to do it for one
file.
The file(s) are nearly correctly tuned and I already know what it is supposed to be, if
that helps.
Example: I have a file resembling the midi a4 which should be 440hz, but maybe it is 430
to 450.
So the optimal input would be: "Tune this file to a4" where the analysis of the
actual frequency is done by a program.
Quality is the top priority. Since the tuning is very fine I don't care if the speed
of the recording changes or not. I take what sounds best.
So, any command line tool available for that? If not a GUI tool is fine as well.
The zita-at1 can do the job, although I'm not sure if it has command
line capabilities, having only used it in ardour myself
http://kokkinizita.linuxaudio.org/linuxaudio/
Arve
10:59 a.m.
You can use something like sox (for ladspa plugins) or lv2file (for lv2
plugins) to run any sort of autotune plugin you want on a wav file.
Jeremy
On Tue, Sep 25, 2012 at 2:21 AM, Nils Gey <list(a)nilsgey.de> wrote:
Hello,
I have samples here, single-note recordings from instruments, that need
tuning.
I am looking for a permanent/destructive way to do that.
I can do the batch processing part myself so I only need a hint how to do
it for one file.
The file(s) are nearly correctly tuned and I already know what it is
supposed to be, if that helps.
Example: I have a file resembling the midi a4 which should be 440hz, but
maybe it is 430 to 450.
So the optimal input would be: "Tune this file to a4" where the analysis
of the actual frequency is done by a program.
Quality is the top priority. Since the tuning is very fine I don't care if
the speed of the recording changes or not. I take what sounds best.
So, any command line tool available for that? If not a GUI tool is fine as
well.
Nils
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11:28 a.m.
On 2012-09-25 08:21, Nils Gey wrote:
Quality is the top priority. Since the tuning is very
fine I don't
care if the speed of the recording changes or not. I take what sounds
best.
Although zita-at1 sound really good, I'm pretty sure you'll get the best
result by speeding up/slowing down the recordings, provided that each
file needs the same retuning throughout. I have no idea how to automate
that, though :-(
--
Atte
http://atte.dk http://modlys.dk
12:05 p.m.
On Tue, Sep 25, 2012 at 11:28:42AM +0200, Atte André Jensen wrote:
On 2012-09-25 08:21, Nils Gey wrote:
Zita-at1 will do the job, but in a rather invasive way. It will
not only resample by some near-unity ratio, but also repeat or
skip cycles in order to preserve to original lenght (it has to,
since it's meant for real time work rather than batch processing).
And while the resampling is of decent quality, it's nowhere near
what the secret rabbit or zita-resampler can provide.
You could still use it to measure the error. An alternative is JAAA
- freeze the display, put a marker on the fundamental frequency and
it will tell you the nearest musical note (for 440 Hz tuning) and
the error in cents. From this you can compute a resampling ratio.
Resampling to the nearest note pitch will change the lenght of a
sample by at most 3 percent, so that's probably acceptable.
The second problem is that you need a resampling app that does
the computations but does not modify the sampling frequency in
the output file header. Never seen such a thing, but I could
write one in a very short time.
Ciao,
--
FA
A world of exhaustive, reliable metadata would be an utopia.
It's also a pipe-dream, founded on self-delusion, nerd hubris
and hysterically inflated market opportunities. (Cory Doctorow)
Quality is the top priority. Since the tuning is
very fine I don't
care if the speed of the recording changes or not. I take what sounds
best.
Although zita-at1 sound really good, I'm pretty sure you'll get the
best result by speeding up/slowing down the recordings, provided
that each file needs the same retuning throughout. I have no idea
how to automate that, though :-( 
3:14 p.m.
On 25/09/12 11:28, Atte André Jensen wrote:
On 2012-09-25 08:21, Nils Gey wrote:
Maybe you could hack something up with aubio and sox:
- aubio for pitch detection infirmation
- some math to calculate the speed factor...
- to be fed to sox and use the speed option
Just an idea..
Lorenzo
Quality is the top priority. Since the tuning is
very fine I don't
care if the speed of the recording changes or not. I take what sounds
best.
Although zita-at1 sound really good, I'm pretty sure you'll get the
best result by speeding up/slowing down the recordings, provided that
each file needs the same retuning throughout. I have no idea how to
automate that, though :-(
4240
days inactive
4240
days old
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5 comments
6 participants
participants (6)
-
Arve Barsnes -
Atte André Jensen -
Fons Adriaensen -
Jeremy Salwen -
Lorenzo Sutton -
Nils Gey