[music-dsp] WSOLA on Real Time

2018-07-23 Thread Alex Dashevski
Hi. I'm looking for a simple explanation and implementation of WSOLA. I tried to google it but I can't understand all meaning of inputs and outputs that WSOLA has. My goal is to implement it in Real time on Android. Possibly, to use pitch shifting in Real Time. Thanks, Alex __

Re: [music-dsp] resampling

2018-07-23 Thread Alex Dashevski
Hi, I need to do resampling on android. Could you give me code on c/c++/Java? On Tue, Jul 24, 2018, 08:56 Tom O'Hara wrote: > I've done many resamplers over the decades (48<->32, 24,16,8) and always > used FIRs for these reasons. > > Tom > > On 7/23/2018 6:25 PM, Nigel Redmon wrote: > > Some art

Re: [music-dsp] resampling

2018-07-23 Thread Tom O'Hara
I've done many resamplers over the decades (48<->32, 24,16,8) and always used FIRs for these reasons. Tom On 7/23/2018 6:25 PM, Nigel Redmon wrote: Some articles on my website: http://www.earlevel.com/main/category/digital-audio/sample-rate-conversion/, especially the 2010 articles, but the A

Re: [music-dsp] resampling

2018-07-23 Thread Nigel Redmon
Some articles on my website: http://www.earlevel.com/main/category/digital-audio/sample-rate-conversion/ , especially the 2010 articles, but the Amp Sim article might be a helpful overview. 48k -> 8k: Filter with a lo

Re: [music-dsp] resampling

2018-07-23 Thread Felix Homann
libsamplerate, aka Secret Rabbit Code, has been relicensed under a 2 clause BSD license a while ago. Maybe you want to give it a try: https://github.com/erikd/libsamplerate ___ dupswapdrop: music-dsp mailing list music-dsp@music.columbia.edu https://list

Re: [music-dsp] What is resonance?

2018-07-23 Thread Vadim Zavalishin
On 20-Jul-18 18:13, Mehdi Touzani wrote: So... how do you do a resonance in a lowpass circuit? :-) not the math, not the code, just the architecture. There are many different ways to create resonance in a lowpass circuit (esp. if the order is larger than 2). The higher is the order of the f

Re: [music-dsp] resampling

2018-07-23 Thread Kjetil Matheussen
On Mon, Jul 23, 2018 at 3:08 AM, Henrik G. Sundt wrote: > This solution, without using any low pass filters before and after the > desimation, will generate a lot of aliasing frequencies, Kjetil! > > Here is another solution: > https://github.com/intervigilium/libresample/tree/master/jni/resample

Re: [music-dsp] resampling

2018-07-23 Thread Kjetil Matheussen
On Mon, Jul 23, 2018 at 3:08 AM, Henrik G. Sundt wrote: > This solution, without using any low pass filters before and after the > desimation, will generate a lot of aliasing frequencies, Kjetil! > > No doubt. I did write "Not the best sound quality though." :-) Alex didn't write about his knowle

Re: [music-dsp] What is resonance?

2018-07-23 Thread David Reaves
In the physical world, resonance can generally be observed as the frequency-dependent cyclic exchanging of energy between potential (stored) and kinetic (active) forms. A pendulum is a basic example: at either end of its swing a pendulum exhibits purely its maximal stored potential energy while