Hi Alex,
a phase vocoder changes the duration of a signal by modifying its STFT
representation. To avoid artefacts due to sinusoidal
component discontinuity introduced by the modification is required to
modify the phase.
Think of an STFT as a 2D matrix (time/frequency) containing
coefficients for
Hi,
I'm trying to understand how the Phase Vocoder works.
My question is:
Why the problem is just in phase on overlapping. What about
amplitude/magnitude ?
I'm not sure if I understood a main idea of the phase propagation.
I read a lot of reports about this algorithm. Some reports describe in two
------------
> Subject: Re: [music-dsp] phase vocoder
> From: "Matt Ingalls"
> Date: Mon, October 15, 2018 2:11 pm
> To: music-dsp@music.columbia.edu
> --
>
> > well there’
is the flavor of the month is
another whole can o' worms.
Original Message
Subject: Re: [music-dsp] phase vocoder
From: "Matt Ingalls"
Date: Mon, October 15, 2018 2:11 pm
To: music-dsp@music.co
well there’s this old blog from Stephan Bernsee using a “similar process” to
the phase vocoder
for frequency domain pitch shifting:
http://blogs.zynaptiq.com/bernsee/pitch-shifting-using-the-ft/
http://blogs.zynaptiq.com/bernsee/repo/smbPitchShift.cpp
not sure what your goal is, but at least in
You could also look at the code in csound on github. Has opcode for pitch
sift and much else.
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Someone already pointed you to Soundpipe: https://github.com/PaulBatchelor/Soundpipe/blob/master/examples/ex_pshift.c -- Kind regards,Eugene Chernyhttps://eugn.ch 15.10.2018, 19:53, "Alex Dashevski" :I need the good example: easy to undersand and to integrate to other code. Thanks,Alex בתאריך
Alex,
A number of experienced DSP engineers have spent considerable time
trying to help you understand the problem you're describing, yet it
doesn't seem like you've made much progress. Your questions often seem
to end up with asking folks to basically write your code for you. I
don't want to be
I need the good example: easy to undersand and to integrate to other code.
Thanks,
Alex
בתאריך יום ב׳, 15 באוק׳ 2018 ב-19:43 מאת Eugene Cherny <m...@eugn.ch>:
> Alex,
>
> There’re enough examples on GitHub:
>
> https://github.com/search?q=pitch+shifting+real+time
>
Alex, There’re enough examples on GitHub: https://github.com/search?q=pitch+shifting+real+timehttps://github.com/search?q=pitch+shifting+realtime -- Kind regards,Eugene Chernyhttps://eugn.ch 15.10.2018, 19:38, "Alex Dashevski" :I need the code for pitch shifting on RealTime. Could you help ?
I need the code for pitch shifting on RealTime. Could you help ?
בתאריך יום ב׳, 15 באוק׳ 2018 ב-15:15 מאת Eder Souza <
ederwan...@gmail.com>:
> Some time ago I posted some code in matlab, this is not real-time, you can
> see the basic math of an standard phase vocoder.
>
>
>
Some time ago I posted some code in matlab, this is not real-time, you can
see the basic math of an standard phase vocoder.
https://dsp.stackexchange.com/questions/40101/audio-time-stretching-without-pitch-shifting/40367#40367
This code just change the time, you can pitch shift using a
Hi,
Which library?
Thanks,
Alex
On Sat, Oct 13, 2018, 22:42 he can jog wrote:
> The library is easy to work with. Having enough of a working knowledge of
> phase vocoders to make use of an existing implementation and implementing
> one from scratch are two different levels of complexity.
>
> On
The library is easy to work with. Having enough of a working knowledge of
phase vocoders to make use of an existing implementation and implementing
one from scratch are two different levels of complexity.
On Sat, Oct 13, 2018 at 2:31 PM Daniel Varela
wrote:
> Complex stuff have no easy fix
>
>
Complex stuff have no easy fix
El sáb., 13 oct. 2018 20:43, he can jog escribió:
> Paul Batchelor has a great port of the csound 'mincer' phase vocoder in
> his SoundPipe library:
> https://github.com/PaulBatchelor/Soundpipe/blob/master/modules/mincer.c
>
> That's definitely beyond my
Paul Batchelor has a great port of the csound 'mincer' phase vocoder in his
SoundPipe library:
https://github.com/PaulBatchelor/Soundpipe/blob/master/modules/mincer.c
That's definitely beyond my understanding to re-implement, but his library
is designed to be embedded and has a really nice API,
Hi,
Where can I find a simple explanation and code example(supported RealTime
and multi threading) ?
I found https://breakfastquay.com/rubberband/index.html but it very
difficult undersand how it work, I need to integrate this code into android
that should run on an audio buffer.
Thanks,
Alex
Thank you all for your help,
the information given is extremly helpful
Vladimir
On Thu, Jul 28, 2011 at 12:39 PM, Dan Stowell
dan.stow...@eecs.qmul.ac.uk wrote:
Hi -
The implementation in Rubber Band sounds pretty good to me, though I don't
know how it compares formally against other
Hi,
Marsyas (an open source C++ framework for sound analysis and processing) has a
phase vocoder routine that you may find worth have a look (all the code is
open). You can have a look at it here:
http://marsyas.info/
Let me know in case of any questions.
I hope this helps.
Cheers,
Gustavo
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