Re: [Freetel-codec2] developing a cognitive decoder

2018-02-07 Thread David Rowe
Hello Matei, Look at codec2-dec/src/codec2.c c2sim can dump the parameters to text files - David On 08/02/18 04:29, Matei Alexandru Coltoiu wrote: So, I would like to know how are the data vectors that come out of the encoder composed, by that I mean, how are the 4 parameters, pitch, energy,

Re: [Freetel-codec2] developing a cognitive decoder

2018-02-07 Thread Matei Alexandru Coltoiu
So, I would like to know how are the data vectors that come out of the encoder composed, by that I mean, how are the 4 parameters, pitch, energy, voicing and spectrum organised in the bitstream. I would like to extract the parameters in order to work on them. On Fri, Nov 3, 2017 at 12:22 PM, Matei

Re: [Freetel-codec2] developing a cognitive decoder

2017-11-03 Thread Matei Alexandru Coltoiu
David, the current block scheme of soft-decision demodulators (as far as I konow) includes a demodulator that still outputs integer values, but it outputs current quantisation tresholds and accepts a feedback for the decision making process. My theoretical demodulator would be a non-decision demo

Re: [Freetel-codec2] developing a cognitive decoder

2017-11-03 Thread glen english
Tomas, it sounds as it you are referring to a soft decision iteratively decoded system ? IE like LPDC, Turbo block, turbo product etc etc Iterative, never the less. On 3/11/2017 7:23 PM, Tomas Härdin wrote: > Could such a cognitive system also be useful on the encoding side? > Whenever I see po

Re: [Freetel-codec2] developing a cognitive decoder

2017-11-03 Thread Tomas Härdin
Could such a cognitive system also be useful on the encoding side? Whenever I see postprocessing ideas like this I tend to think "what if you put that model in the coding loop?". Like the loop filter in H.264 for example. /Tomas On Wed, 2017-11-01 at 13:19 +0100, Matei Alexandru Coltoiu wrote: >

Re: [Freetel-codec2] developing a cognitive decoder

2017-11-01 Thread David Rowe
Feel free to experiment. We've done some similar work with trellis decoding that might be useful as a starting point: http://www.rowetel.com/?p=4147 Many of the demodulators already output soft decision information. - David On 01/11/17 22:49, Matei Alexandru Coltoiu wrote: Hello, I am t