See it with your lying ears

See it with your lying ears(lcamtuf.substack.com)

55 points by fratellobigio 128 days ago | 6 comments

nebula8804 128 days ago |

Reminds me of the old Apogee/3DRealms/Build Engine DOS Games. In the sound card setup you could choose 44.1Khz but if you didn't have the CPU/sound card processing power there was also something along the lines of 33Khz and 22Khz and I always remembered how the sound degraded. It sounded nicer to my ears at times.

bfdm 128 days ago |

I actually prefer the result of the first down sampling. The "metallic" steps remind me acutely of old NES game 8bit audio.

nerdsniper 128 days ago |

This is awesome, but I wonder if some of the audio files, particularly the quantization one, might have the potential to damage some speaker drivers due to their inherent "square-wavey-ness" which can energize coils without giving them any off-duty cycles to cool down.

maurycyz 128 days ago | |

I doubt that's going to be much of a problem: As long as the average power is within rated limits. It takes time for coils to heat up and cool down: The worst thing you can do for speakers is to play loud music on a hot day. (Music also has a high dynamic-range which maximizes mechanical loads)

Inductive kick won't be an issue either: amplifiers are designed as voltage sources, not current sources. They present a low impedance path for back-EMF to take without causing any problems.

alzamos 128 days ago |

Very interesting how on "downsampled 32x + interpolated" it sounds like the singer is harmonizing with herself

socalgal2 128 days ago |

semi related

Coding Adventure: Analyzing Audio

https://www.youtube.com/watch?v=08mmKNLQVHU