Variable duty cycle square waves with the Web Audio API

Re:Variable duty cycle square waves with the Web Audio API by gmueckl on Monday April 07, 2025 @04:17PM (#43615509)

Well, the output of the wave shaper approach in the article is exactly the same sharp digital square wave that you'd get from a trivial square wave generator.

But I overlooked the point that the GP mentions that the processor source code must be loaded from a separate JS file. That's some quite annoying overhead.

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Re:Variable duty cycle square waves with the Web Audio API by Blackthorn on Monday April 07, 2025 @04:55PM (#43615841)

What I was trying to imply was that it's not enough to build a square wave generator to sound like a game boy. Even if that generator in the game boy was a perfect square wave generator, which I'm not sure it is.

The sound created by that generator passes through a fairly complicated filter known as The game boy's speaker. To properly create a game boy sound, you need to find or take an impulse response of that speaker and convolve it with the output of your oscillator.

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Re:Variable duty cycle square waves with the Web Audio API by gmueckl on Monday April 07, 2025 @07:07PM (#43616886)

Well, and a single recorded impulse response is probably not enough, either, if you want to be super accurate. The directivity pattern is probably awful and shaping the sound as well.

I know all of that. But I just didn't want to get into these details in this thread.

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