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mb-sound reviews and mentions
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Why Can’t You Design Noise in Frequency Space?
You can try the synthesizer and other audio code if you're using Linux.
Here's an earlier version of the synthesizer (licensed under AGPL3). The MIDI CCs for controlling different parameters are listed in the source code. You'd want to clone the repo, run through the installation instructions in the mb-sound repo, do a bundle update mb-sound, then run bundle exec bin/complex_synth.rb. https://github.com/mike-bourgeous/mb-surround/blob/3823de44a...
Here's the core sound repo (licensed under BSD) with some examples for getting started: https://github.com/mike-bourgeous/mb-sound
I don't plan on making the visualizations available, in part because the system is too convoluted and they probably only work in my specific environment.
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Python, unlike C, has the mod operator always return a positive number
Ruby's % operator behaves the same way, for both integer and float values. A positive-only modulus function is useful for wrapping angles. This bit me a week or two ago when I was porting audio algorithms from Ruby to C, and had to implement a positive modulus function[0].
[0] https://github.com/mike-bourgeous/mb-sound/blob/a8eb1232ae35...
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Learn more about the Fast Fourier Transform, animated in 3D [video]
Someone asked somewhat recently about visualizing analytic signals in 3D (https://news.ycombinator.com/item?id=28633829). This is my video, with 3D animation, summarizing the FFT and analytic signals, plus a review of digital sampling.
The submitted link is for a blog post about the video which includes a video transcript (repeated for reference: https://blog.mikebourgeous.com/2021/10/04/fast-fourier-trans...)
Here's a direct link to the video: https://www.youtube.com/watch?v=iyjIVSnrPSo
I've opened the Ruby code building blocks I use to produce these visualizations (which are not open): https://github.com/mike-bourgeous/mb-sound
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Tenderjit – A JIT for Ruby Written in Ruby
Yeah, here's my main sound repo: https://github.com/mike-bourgeous/mb-sound
There's also an FFI wrapper for jackd: https://github.com/mike-bourgeous/mb-sound-jackffi
I'm certain there are still improvements that could be made to the APIs and to performance, so I'm not currently releasing these on rubygems.
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Ask HN: How to get started with audio programming?
Edit: My goal is to make a mini-synth which takes input from the computer keyboard.
If you are a Ruby programmer, you could use this rubygem I wrote: https://github.com/mike-bourgeous/mb-sound
A video about using that gem to make a synthesizer: https://m.youtube.com/watch?v=aS43s6TWnIY&feature=youtu.be
Part of a long-running experiment of mine to make educational videos about sound, which I hope might help you on your audio programming journey: https://www.youtube.com/playlist?list=PLpRqC8LaADXnwve3e8gI2...
There have been recent posts to HN about the difficulty of reading key-up events from the terminal. I used MIDI and a separate MIDI keyboard app for my video demo.
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A note from our sponsor - InfluxDB
www.influxdata.com | 7 May 2024
Stats
mike-bourgeous/mb-sound is an open source project licensed under BSD 2-clause "Simplified" License which is an OSI approved license.
The primary programming language of mb-sound is Ruby.
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