Comments by "Lawrence D’Oliveiro" (@lawrencedoliveiro9104) on "What is High Fidelity? How does Stereo work?" video.

  1. 12:53 At least until digital came along and threw everything else out the window.
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  2. 9:09 I think those particular examples would be handled sufficiently by a good frequency response. The extra that’s needed is preservation of the relative phase of the different frequencies: this means accurate reproduction of transients (e.g. percussive sounds, and also the initial “attack” on the notes produced by many musical instruments).
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  3. 12:20 I think they have to be arranged diagonally, not vertically and horizontally. That way, straight horizontal motion can be interpreted as a mono signal (mix of both channels, rather than just one channel), for compatibility with equipment that can’t handle stereo.
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  4. 12:41 Ah, I see you noticed.
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  5. 0:51 Sound is pressure waves. It can be transmitted through any matter, not just air: e.g. underwater, or through rock. Or the taut string of a tin-can intercom.
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