Re: [PD] A 6th order hilbert transformer?

2016-06-25 Thread katja
The phase shift test from my previous mail expresses quadrature transformer output as normalized instantaneous frequencies (cycles). Depending on frequency (within the working range), deviation can be up to 1/100 of a cycle both for [olli~] and Pd's [hilbert~]. Of those two, [hilbert~] may even be

Re: [PD] A 6th order hilbert transformer?

2016-06-23 Thread Matt Barber
Not sure. I've used csound's a lot in ambisonic decoding and it's always worked well. On Thu, Jun 23, 2016 at 6:06 PM, Alexandre Torres Porres wrote: > olli's seems easier for me to code, and better than csound's huh? > > thanks > > 2016-06-23 11:27 GMT-03:00 Matt Barber

Re: [PD] A 6th order hilbert transformer?

2016-06-23 Thread Alexandre Torres Porres
olli's seems easier for me to code, and better than csound's huh? thanks 2016-06-23 11:27 GMT-03:00 Matt Barber : > csound's hilbert transform is also 6th-order. Code here: > > > https://github.com/csound/csound/blob/2ec0073f4bb55253018689a19dd88a432ea6da46/Opcodes/ugsc.c >

Re: [PD] A 6th order hilbert transformer?

2016-06-22 Thread katja
Hi, Olli Niemitalou has coefficients published for a higher order 'hilbert transformer' on http://yehar.com/blog/, attached is [olli~] abstraction based on it. Katja On Wed, Jun 22, 2016 at 4:37 AM, Alexandre Torres Porres wrote: > Howdy, I'm working on a frequency shifter

[PD] A 6th order hilbert transformer?

2016-06-21 Thread Alexandre Torres Porres
Howdy, I'm working on a frequency shifter object (via single sideband modulation / complex modulation). In Max they have a so called "6th order hilbert transformer with a minimum of error". In Pd, the hilbert~ abstraction is 4th order. I'm copying the pd abstraction for now, but I was hoping to