Re: [music-dsp] R: Real-time DSP Experience with Python

2016-05-25 Thread Eder Souza
On Wed, May 25, 2016 at 10:38 AM, Marco Lo Monaco <> wrote: > Good job! Buffer size is? > > M. > > > > *Da:* [mailto: >] *Per conto di *Eder Souza > *Inviato

Re: [music-dsp] Android related audio group / mailing list?

2016-05-25 Thread Eder Souza
Hi, I do not see drives in the andraudio group since he migrated to [1] Some years ago I tried see how some of my codes works in android, I wrote effects to work in real-time (automatic pitch correction, time stretch, pitch shifters in time domain and frequency domain) and I get a lot of

Re: [music-dsp] Real-time pitch shifting?

2018-05-25 Thread Eder Souza
A lot of trick but I did Fast Enough... Was fun write the code :-) ♪♫♫♪ ▇ ▅ █ ▅ ▇ ▂ ▃ ▁ ▁ ▅ ▃ ▅ ▅ ▄ ▅ ▇ Sent From The Moon and

Re: [music-dsp] WSOLA

2018-05-29 Thread Eder Souza
WSOLA is an Time Domain algorithm, Pitch shifters can works in time domain too, there are some ways to do this... WSOLA is just one time-scaler, but you can pitch shift combining WSOLA and Resample: - Change the time using WSOLA (ex. time scale by 2.0) - Use some interpolation(ex. resample scale

Re: [music-dsp] granular synth write up / samples / c++

2018-03-06 Thread Eder Souza
WoW nice Examples :-) It's really amazing to get satisfactory results without need a pitch track! I will try put some examples in somewhere, I coded some algorithms like Phase Vocoders, TDHS and PSOLA(Lent), I'm using pitch track (AMDF just in monophonic sound) to splice and cross-fade with

Re: [music-dsp] phase vocoder

2018-10-15 Thread Eder Souza
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. This code just change the time, you can pitch shift using a

Re: [music-dsp] Auto-tune sounds like vocoder

2019-01-17 Thread Eder Souza
When I read the original patent US5973252A (Pitch detection and intonation correction apparatus and method), in the vague description of how the pitch shift is made, I wondered if everything seemed to be as simple as I would be imagining... For pitch shift (auto Tune): Just get the fracional

Re: [music-dsp] SOLA, PSOLA and WSOLA.

2019-02-26 Thread Eder Souza
In essence WSOLA and SOLA are only for Time Scale Modification... WSOLA - Applies synchronization in the analysis stage of OLA, so input frames are selected based on waveform similarity, keeping the output at a constant rate! SOLA - Works like WSOLA but applies synchronization in the output, so

Re: [music-dsp] Who uses YIN or pYIN for pitch detection?

2019-03-07 Thread Eder Souza
Pyin seems nice, I never tasted it before ! Yeah I use YIN, I made a sacred way searching and writing Pitch Tracking algorithm to works with Keith Lent Pitch Shifting, I have coded the basic steps of YIN in matlab, but for me or my implementation not works so well like AMDF or some improved

Re: [music-dsp] Auto-tune sounds like vocoder

2019-02-04 Thread Eder Souza
From The Moon and Written With My Thumbs ! On Thu, Jan 17, 2019 at 6:31 PM robert bristow-johnson <> wrote: > > > Original Message > Subject: Re: [music-dsp] Auto-tune sounds like vocoder &