Repository navigation
Synthesized sound extremely glitchy #9
Description
Hi. I'm trying the SineCluster and SawWave examples and most of the time they do not work correctly on my system.
When I start the sketch most of the times the result is almost pure glitch, very broken. Sometimes, about 10% of the times, it seems to work ok. I've heard it slide from working to glitch: it starts ok, but after a few seconds it becomes broken. It sounds like something out of sync, or a threading problem.
I tried recording it with simplescreenrecorder, but the result is silent. I can try record it with an external recorder if that helps.
I work on ArchLinux, the laptop is a quad i7 and I'm used to audio synthesis (often with SuperCollider or webaudio) and creative coding with different languages.
Activity
kevinstadler commentedon Sep 12, 2018
What does the CPU usage look like while the sketches are running, is Java hogging a lot of the processor?
Also, could you paste the output from the Processing console from when the Sound library is initialised (it should tell you some stuff about latency etc)
hamoid commentedon Sep 12, 2018
Hi, this is "idle":
and this while running the sine cluster:
The console shows this:
sophuric commentedon Mar 31, 2019
Before the
sound.play()have you gotsound.stop(), so it doesn't get feedback.hamoid commentedon Mar 31, 2019
@wooden-utensil sorry I don't understand what you mean. Is it a question?
I just open the SineCluster example and run it.
With the latest version there's no longer anything in the console.
sophuric commentedon Mar 31, 2019
@hamoid Have you tried updating Processing to the latest version, also try updating your speaker driver if necessary. Try to see if you can change the bit quality and if it's signed or unsigned, otherwise just try to play around with the parameters. Make sure you define the
SineClusterin thesetup()function.hamoid commentedon Apr 11, 2019
@wooden-utensil I'm using the latest Processing. Sound in all other environments work fine: with and without jackd, in SuperCollider, Audacity, Firefox, cmus, VLC, KDEnlive, zynaddsubfx, etc. It also works in Processing with Minim and Beads (other sound libraries). So I think my system should be configured ok for sound.
I am not writing any new programs, just running the examples that come with the Sound library for Processing, so it's not an error in my programs.
Unfortunately I have no time at the moment to change audio settings to try debug this. Maybe some day.
jeanFrancoisHicter commentedon Feb 10, 2020
Hey! I jump on this thread as I did a simple program to deal with sineWaves... the idea is to modulate the amplitude of the waves with LFO... I post the link to the code below so you can tell me what is wrong... The issue I have is: massive parasites/glitches: the sine wave seems to be "scaled" on a sample rate basis: but there is no way in the library to custom the sample rate. So, guys, what's wrong here? Thanks!
https://www.dropbox.com/s/0ry9srb9r3cgitt/soundTest.pde?dl=0