Created
July 13, 2023 20:37
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Minimal working example of Chromium bug when calling createIIRFilter() on Linux
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| <!-- | |
| Run the following file in Firefox and Chromium. | |
| It has been observed, that createIIRFilter() takes around 50ms to complete in Chromium-based browsers on Linux (Ubuntu, Gnome, PulseAudio). | |
| In Firefox, it takes <1ms. | |
| createBiquadFilter() has been included as a reference. | |
| It takes <1ms in both browsers. | |
| --> | |
| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset="UTF-8" /> | |
| <title>WebAudioAPI IIR Filter Bug</title> | |
| </head> | |
| <script type="module"> | |
| const ctx = new OfflineAudioContext({ | |
| length: 1, | |
| sampleRate: 44100, | |
| numberOfChannels: 1 | |
| }); | |
| const feedback = [1, -1.9635105015543133, 0.9658787263376775]; | |
| const feedforward = [0.017060636575783206, 0, -0.017060636575783206]; | |
| const t1 = performance.now(); | |
| const iirNode = ctx.createIIRFilter(feedforward, feedback); | |
| const t2 = performance.now(); | |
| console.log(`createIIRFilter() took: ${t2 - t1}ms`); | |
| const t3 = performance.now(); | |
| const biquadNode = ctx.createBiquadFilter(); | |
| const t4 = performance.now(); | |
| console.log(`createBiquadFilter() took: ${t4 - t3}ms`); | |
| </script> | |
| <body> | |
| See console | |
| </body> | |
| </html> |
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