The legend of BRENSO’s pulse-width modulation
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- Опубліковано 23 лип 2024
- PWM is a huge part of everyday electronics, but it is also a classic synth sound, to the point it reached a cult (if not meme) status.
A Eurorack oscillator like BRENSO wouldn't have been completed without a PWM section, and today we're exploring it in detail. It might not be the most obvious feature, since it is nestled into the timbre modulation section, but it is capable of wild timbres.
BRENSO: frap.tools/brenso/
Check also this PWM patch: • Pulse-Width Modulation...
Timbre and Amplitude modulation:
BRENSO Waveforms: • How does BRENSO genera...
Overtones: • What are overtones and...
00:00 Overview
02:36 What is a comparator and why it's important for pulse-width modulation?
03:36 The difference between BRENSO's square waves.
04:37 Modulating the comparator threshold to change the pulse width.
05:04 What are the harmonics of a pulse wave?
06:09 How to fake more oscillators through PWM.
07:15 Pulse wave symmetry and phase.
09:51 Feeding BRENSO's comparator with the triangle shaper
Very interested in a deep dive on the log wave
That can be quite fun and it's also easily replicable on FALISTRI with minimum cross-patching, will shoot a video for sure then!
excellent as always 🙂
Thank you so much! 😀
Very interesting, as always. Each time you do a video/tutorial on the Brenso I learn something, or it clarifies my understanding of Brenso. I'd certainly give a thumbs up to a tutorial on the white section. 👍
BTW, which is the previous episode/tutorial you mention at the beginning (please)?
Hey thanks a lot for the awesome remark! Will surely shoot a video on the white section.
The other one is here, mentioned a few times down the video: ua-cam.com/video/EhfPWT34PXI/v-deo.html
Can you still change the threshold when it’s modulated by the waveshaper?
Yes, you can! The result would still be a PWM, though, since the comparator outputs only high or low signals. You can get a more complex modulation!