Sound quality : lower than BlueWizard

[deladriere]

I noticed that the sound produced with python_wizard are never as good as the one produced by BlueWizard with the same parameters. Is this normal? I saw the commits in the cleanup branch. Are you working on this issue?

I love to use python_ward because I can batch process a text file, have each of the lines converted to wav (via Say), process them with python_wizard and then directly send the LPC stream to the Arduino via py_serial for an instant quality check.

[ptwz]

Ok, I will look into it. Is there a pattern like vowels or th's or unvoiced things? So I can focus my debugging a bit.. Seems pywizard/Buffer.py:95 is the culprit, the pitch estimator seems a bit odd. Don't know what I did there...

[ptwz]

The preliminary fix seems to raise some warnings, which I would like to look into. But it seems to increase the sound quality a lot. Please check it out and give me some feedback.

[deladriere]

Ok thanks a lot !!! . I will try tomorrow and process the same audio into both Bluewizard and Python_wizard

[deladriere]

Thanks, I checked and I achieved almost the same results with both Bluewizard & PythonWyzard. By the way, they both seem to sound better in English with Alex than it does in German with Markus or Yannick! I think the quality is in fact related to the Arduino part of the system. The live player from Blue wizard sound much better than the Arduino does: maybe there is something to learn from the decoder part of the code to port to the Arduino?

[ptwz]

Indeed the TMS emulator in BlueWizard is quite a beast. I think this is something for the DSP gurus to port ;).

[deladriere]

Sorry I must have made a mistake testing the different versions

I had to revert back to a8bddd171ce42bca9e5826721997a8905932ddfb (dec 3)

Here is the same sound processed by :

a) Blue_wizard 60,80,23,43,03,70,7c,8b,03,b6,1f,4d,51,0b,26,26,11,ba,85,25,72,58,94,e4,16,e4,a4,19,d6,56,5a,94,8b,a6,7b,5b,6e,49,49,5a,92,6d,b9,e5,25,69,49,8c,ed,54,96,28,29,5e,b6,5d,39,a8,4b,b8,c6,52,c0,b3,a9,0e,38,b1,dc,00,db,47,86,b6,d1,8a,74,b1,13,86,50,32,55,d3,49,18,43,8f,e4,48,d5,61,0c,b9,5c,2a,62,bb,29,94,34,3d,8d,1a,a6,18,2a,68,2d,6c,98,b2,c9,e2,b2,22,6e,2e,26,4a,c2,8a,b8,a5,38,4f,36,0b,a5,e6,62,dc,d0,34,b2,98,4b,72,07,2f,33,62,2d,3e,9c,d5,4d,b1,a5,9a,08,36,b3,8c,e6,6e,2c,45,dd,0a,3c

b) dec3 10,f0,23,43,3d,b5,52,c1,8e,1f,49,93,d9,09,dd,7e,b4,54,26,a7,b0,05,57,d3,08,dd,82,12,25,2c,4a,72,0b,73,d2,0c,6b,2b,2d,ce,45,d3,bd,a3,b4,b4,24,2d,c9,b6,d2,f2,9a,b4,24,c6,4e,2a,4b,94,14,2f,db,ae,1a,cc,25,5c,63,b9,e9,d9,54,0f,4d,9c,b0,13,cb,2b,3c,49,40,b6,8f,f4,74,3b,a1,6d,b4,22,43,ec,86,31,94,4c,d5,74,12,c6,d0,23,39,52,4d,98,42,2e,97,8a,d8,6e,0a,25,4d,4f,a3,86,29,86,0a,5a,0b,1b,a6,6c,b2,b8,bc,88,9b,8b,89,92,b0,22,6e,29,ce,93,dd,42,a9,b9,58,77,34,8d,2c,e6,92,dc,c1,cb,8c,58,4b,48,17,73,53,6c,69,26,52,cc,2c,a3,a9,5b,4b,51,b7,02,0f

c) actual version 10,f0,23,43,3d,b5,52,41,8f,1f,49,93,d9,09,dd,7e,b4,54,26,27,a6,05,57,d3,08,dd,e0,12,25,2c,4a,72,83,73,d2,0c,6b,2b,0d,c9,45,d3,bd,a3,34,a1,24,2d,c9,b6,d2,e4,9a,b4,24,c6,4e,52,4b,94,14,2f,db,8e,1e,cc,25,5c,63,39,f9,d9,54,0f,4d,9c,c4,13,cb,2b,3c,49,e0,b6,8f,f4,74,3b,a1,6d,b4,22,43,ec,86,31,94,4c,d5,74,12,c6,d0,23,39,52,4d,98,42,2e,97,8a,d8,6e,0a,25,4d,4f,a3,86,29,86,0a,5a,0b,1b,e4,6c,b2,b8,bc,88,53,8a,89,92,b0,22,4e,2d,ce,93,dd,42,29,a5,58,77,34,8d,2c,98,92,dc,c1,cb,8c,d0,4a,48,17,73,53,0c,6a,26,52,cc,2c,23,a8,5b,4b,51,b7,02,0f

As you can hear, the best is Blue_wizard, then dec 3. Actual version of ptwz produces a lot of squeaky sounds

[deladriere]

@ptwz Hi can you reopen this issue ?

[ptwz]

@deladriere Could you upload your example file, so I can debug easier?

[deladriere]

sure : https://www.dropbox.com/s/h0s6jayy662uumv/tesla.wav?dl=0 it says "tesla"

[deladriere]

I tried the last commit from the pitch estimate branch: sounds better it still sounds like whining

10,88,23,43,3d,ad,52,41,8f,1f,49,93,d9,29,ee,a1,cd,25,a2,b4,a0,44,09,f5,92,3c,82,9c,34,c3,db,72,8b,4b,d1,b4,68,2b,2d,2e,49,4b,a2,6d,97,bc,24,2d,f1,b6,ed,f2,c6,43,52,ad,92,9b,af,0e,75,b7,d8,21,b8,b1,bd,d2,d2,04,78,fb,48,4f,8f,13,dc,c2,3b,c2,c5,49,70,43,8b,14,4b,27,21,08,b9,5c,3a,62,bb,20,94,34,3d,0d,1b,82,ac,ab,b9,ad,88,0b,8a,89,92,f4,22,6e,2e,ce,93,dd,0a,a9,b9,58,77,34,8b,2c,e6,92,dc,d1,ca,0c,9b,ab,cb,10,33,4b,64,6e,c6,53,cc,ad,c0,03

I am processing this text

Space oddity Life on Mars ? Starman David Bowie Roadster Elon Musk Falcon Heavy Tesla

Generating the voice with Alex on Mac and streaming the LPC to the Arduino here is the audio recorded from the Arduino :

https://www.dropbox.com/s/gb2lsfopddgyqo8/pitchtest.mp3?dl=0

Thanks a lot for your efforts

[deladriere]

Thanks for this new version it's still winning. check this video to compare with Blue_wizard First, you hear the wave, then the LPC made by Blue_wizard, then I pasted the Python_wizard data into Blue_wizard
test 18-avr-2018

[deladriere]

you can use this audio too to test

[deladriere]

hi @ptwz I found this tutorial about python_wizard https://www.youtube.com/watch?v=fQ4eC_afHf4 It worked fine for me too using the GUI, so I then realized I wasn't using the correct sets of commands in the command line version ! now my command is -u 0.1 -w 2 -S -p -a -1 -m 0.7 -U -u 1 -F 25 -f hex (it would be cool if we could print this command string while playing with the GUI 😄 )

[ptwz]

Thanks for letting me know, I will try to add the command line output in the GUI in a future revision.