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toydrones

I'm trying to make a real-time phase vocoder in RNBO like the ones in 

. I'm not out of the woods yet, but I want to share what I have so far and get all the feedback I can.

The first example patch from the tutorial 

 ports with some modifications to compensate for RNBO's lack of framedelta~ and frameaccum~, pictured below:

Note that this is a crude workaround. While it can resynthesize the original signal as cleanly as the tutorial patches, it produces unexpected pitch/formant/phase artifacts when timestretched even a little bit , and these artifacts are notably stronger than those in the tutorial.  I assume they stem from my framedelta~ and frameaccum~ workarounds. I tinkered with this patch for a while to no avail and eventually decided to try the same thing without polar coordinates. 

The tutorial's cartesian PVOC example uses some pink send~ and receive~ pairs in what 

 an infinite loop outside the pfft~ setting:

Sure enough, attempting this scheme in RNBO wouldn't compile at first because of the infinite loop. It managed to compile with a feedback~ thrown in, but the resulting patch only produced harsh clipping. Delaying the feedback loop by fftsize or hopsize created the same clipping, which persisted even with the feedback multiplied by decimals in the 0.1 - 0.4 range. 

I did at least get a cartesian pvoc to cleanly resynthesize the signal, though not without the timestretching artifacts of my other attempt.

If I understand correctly, the pfft~ object delays its processing by some multiple of the fftsize so that it may read and write to a frame simultaneously, which results in its odd/lovely ability to accomodate infinite loops. RNBO, on the other hand, does not perform this automatic buffering, which may or may explain its lack of a framedelta~ and frameaccum~ objects. 

To me, this all suggests a subtlety in RNBO's fft~ handling not mentioned in 

. Could anyone help me better understand RNBO's fft~ object and how I might account for it in my phase vocoder project? Here are the patchers for reference:

Rnbo-PhaseVocoder_Project[1].maxpat

I'm trying to make a real-time phase vocoder in RNBO like the ones in The Phase Vocoder – Part I tutorial. I'm not out of the woods yet,...

rnbo-phase-vocoder-troubleshooting

RNBO Phase Vocoder Troubleshooting

Similar to a previous thread: I was unable to do RNBO work because max suddenly refused to edit, create or open RNBO.

The console error was "Could not connect to RNBO buildserver" and several other errors including "Unable to get gRPC URI and WebSocket port from codegen server". After a day of frustration investigating network, firewalls, packet captures etc, I tried repair and reinstall, which didn't fix the issue. 

Then I deleted (Username)/AppData/Roaming/Cycling '74

This fixed the problem (so far!).  As detailed earlier by NUMB_CHANNELS in the thread 

https://cycling74.com/forums/rnbo-130-refuses-to-start

I hadn't had any crashes or issues or software updates, so I don't know how anything got corrupted in the Cycling '74 files. 

I hope this will help others who run into the issue. 

Similar to a previous thread: I was unable to do RNBO work because max suddenly refused to edit, create or open RNBO.

The console error...

rnbo-143-refuses-to-start

RNBO 1.4.3 refuses to start

asciishallreceive

The Rpi 4B I am using does not show in the target export window. I manually added the address of the pi, but it still shows it as not connected. Wireless connection is otherwise working on the pi.

Other things I've tried to troubleshoot this issue:

Verify connection: I verified everything is correct in setup from the tutorial. Username is pi, hostname is unchanged, updated through terminal. I can SSH into the pi from my laptop and send and receive files, etc. 

Updates and installing dependencies:  I suspect it might have something to do with the way the raspberry is configured. I ran into an error for "sudo apt-get install jack_transport_link rnbo-runner-panel," which gives the error: 

"E: Unable to locate package jack_transport_link

E: Unable to locate package rnbo-runner-panel"

I have used "sudo apt-get install" as well as "sudo apt update | sudo apt upgrade" and rebooted the pi. I'm at a loss. If anyone can tell me why the pi will not show up on the target window, that would be amazing. I have puzzled over this for several days. 

The Rpi 4B I am using does not show in the target export window. I manually added the address of the pi, but it still shows it as not...

raspberry-not-showing-as-online-in-target-export-window

Raspberry not showing as online in target export window

Mark Swiderski

I am trying to export one of the RNBO guitar pedal patches to my Raspberry Pi 4. I can see the target listed, I can ssh in, and everything on the RPI seems to be fine from what I can tell. But when I try to export, I get the following error:

Starting Code Generation
Generating Objects
Compiling Patcher
Printing CPP Code
Sending config
Sending code
Sending patcher
Compiling
Could not activate runner's audio, please check your audio configuration settings

I am trying to export one of the RNBO guitar pedal patches to my Raspberry Pi 4. I can see the target listed, I can ssh in, and everything...

rnbo-target-export-error-could-not-activate-runners-audio-please-check-your-audio-configuration-settings

RNBO Target Export Error - Could not activate runner's audio, please check your audio configuration settings

Maja Karlsson

The entire project is also here, with the samples: 

https://drive.google.com/drive/folders/14AifqH13y7N_6iInuc-PshmDkhzcXoaS?usp=share_link

I have been struggling with this export the past days. I read an old post where they talked about that the rnbopat needs to be a file, not just a subpatch, and I have been trying with @title, @file and @patchername... There used to be 3 rnbo-subpatches in the top rnbo, one for midi, one for grooves and one for filters, but it seemed like midiin only wanted to work in the top. Eventually I crammed everything in to one singe rnbo.

I made a successful export once, when I had accidentally deleted all the groove-objects.

Putting them back made the export fail again. So now I suspect the sample dependencies is the culprit.

[Max Patch]
The entire project is also here, with the samples:...

export-seems-to-fail-on-sample-dependencies

Export seems to fail on sample dependencies

Peter Todd

I'm just dipping my toes into RNBO (and in general haven't really played with Max much for many years, but I do a lot more general coding).

Looking at the examples in Synth Building Blocks, for example the subtractive synthesizer, which has a 

 attribute of that RNBO object, then the parameters get listed as 

 rather than use the title as I believe they're supposed to.

RNBO Forum