Re: [music-dsp] resampling

2018-07-24 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

[music-dsp] WSOLA on Real Time

2018-07-24 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

2018-07-24 Thread Nigel Redmon
Oops, meant “as Tom points out…” > On Jul 24, 2018, at 9:36 AM, Nigel Redmon wrote: > > (Not sure why I didn’t receive Rolf’s email directly…) > > Hi Rolf, > > First, I should have pointed to this newer series of articles (of mine), not > old ones, earlier in this thread. You’ll get a

Re: [music-dsp] resampling

2018-07-24 Thread Nigel Redmon
(Not sure why I didn’t receive Rolf’s email directly…) Hi Rolf, First, I should have pointed to this newer series of articles (of mine), not old ones, earlier in this thread. You’ll get a detailed explanation of why zeroes (and as Alex points out, the zeros can be handled efficiently so it’s a

Re: [music-dsp] resampling

2018-07-24 Thread rolfsassinger
Hello Nigel   could you please say a word more to what you mean by "2x", "3x"? Also I am again not sure why in this case, adding zeros is an advantage. I had expected to just copy the samples to have less work to do in filtering. I tested such things in MATLAB and found that feeding zeros

Re: [music-dsp] resampling

2018-07-24 Thread Tom O'Hara
Adding zeros is an advantage as then you don't need to calculate their multiplication, as 0 x coefficient = 0 The filter order will be the same with zeros or repeated samples. Tom On 7/24/2018 4:37 PM, rolfsassin...@web.de wrote: Hello Nigel could you please say a word more to what you mean

Re: [music-dsp] Creating new sound synthesis equipment

2018-07-24 Thread rolfsassinger
Hello Theo   the word "hip" regarding FPGA seems to be a good hint. In several music groups the new music machines are discussed heavily. In terms analog modelling and recreating these formerly analog machines we know the digital way. At the first sight FPGAs are consequent descision what me