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marcan42's profile
Hector Martin
Hector Martin
Hector Martin
@marcan42

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Hector Martin

@marcan42

If it ain't broke, I'll fix it! I'm porting Linux to Apple Silicon Macs at @AsahiLinux. http://patreon.com/marcan  | http://github.com/sponsors/marcan 

Tokyo, Japan
marcan.st
Joined May 2009

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    1. Hector Martin‏ @marcan42 15 Jul 2020
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      You know the mastering is quality (/s) when the audio peaks at **3dBTP**. Yes, CDs can go beyond full scale after reconstruction. Light grey area = 0dBFS. Top is "dumb" CD audio (no waveform interpolation), bottom is after oversampling/interpolation. DACs don't like this.pic.twitter.com/ODFSSZExhz

      6 replies 6 retweets 55 likes
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    2. Raccoon1300‏ @Racoon1300 15 Jul 2020
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      Replying to @marcan42

      Super Audio Cd's are pretty amazing spec wise too I think the quality mostly comes from the properly funded mastering rather than the improved sample rates https://en.wikipedia.org/wiki/Super_Audio_CD …

      1 reply 0 retweets 1 like
    3. Hector Martin‏ @marcan42 15 Jul 2020
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      Replying to @Racoon1300

      CDs are capable of reproducing the entirety of the human hearing range in all but laboratory/anechoic chamber test conditions. You can take any SACD, convert it to CD, and it will be effectively indistinguishable in any practical setting, assuming the playback equipment is decent

      3 replies 1 retweet 12 likes
    4. Hector Martin‏ @marcan42 15 Jul 2020
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      Replying to @marcan42 @Racoon1300

      So yes, any *real* quality gains from "high res" formats like SACD and 192k/24bit audio are 100% due to mastering differences, not the format.

      1 reply 1 retweet 9 likes
    5. Raccoon1300‏ @Racoon1300 15 Jul 2020
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      Replying to @marcan42

      The noise floor is lower on SACD but not much equipment of human hearing can pick a 96db noise floor from a Theoretical 120db one

      1 reply 0 retweets 2 likes
      Hector Martin‏ @marcan42 15 Jul 2020
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      Replying to @Racoon1300

      That's actually a common misconception. The noise floor of 16bit audio is 96dB *broadband* but not at individual frequencies. Noise shaped dither can further increase the perceived SNR for humans. Watch this: https://xiph.org/video/vid2.shtml …

      12:57 AM - 15 Jul 2020
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      • sww1235 ohzee Igetin みょん Jannis Harder LeoDJ MAKLUNKY Konrad Beckmann Raccoon1300
      2 replies 1 retweet 11 likes
        1. doragasu‏ @doragasu 15 Jul 2020
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          Replying to @marcan42 @Racoon1300

          Exactly. You can take advantage of the human hearing imperfections and improve perceived SNR by adding dithering where the human ear will not notice.

          0 replies 0 retweets 2 likes
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