Interview with Tomlinson Holman from 2009

Discussion in 'HomeKit, HomePod, CarPlay, Home & Auto Technology' started by jjjjjooooo, Feb 12, 2018.

  1. jjjjjooooo, Feb 12, 2018
    Last edited: Feb 12, 2018

    jjjjjooooo Suspended

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    (https://twit.tv/shows/home-theater-geeks/episodes/1).

    Holman has done “audio direction” for Apple since 2011. Which was the year Apple “started to create a centralized and expanded audio and acoustics team” (https://www.forbes.com/sites/davidp...es-homepod-secrets-release-date/#30d11e224d6a).

    HomePod project began around 2012.

    He was listed as the inventor on a patent Apple filed Sep 13, 2014 for “Directivity optimized sound reproduction” (https://www.google.com/patents/US20170105084). (Which has apparently been referenced 11 times in subsequent patent filings by Sonos (https://www.google.com/patents/US20170105084#forward-citations). Who released their Trueplay calibration system in 2015.)

    Discussed here after it was published (http://www.patentlyapple.com/patent...und-system-invents-next-gen-audio-system.html).

    Also, posted here (https://forums.macrumors.com/thread...alogue-from-movies-more-intelligible.2105702/) by me.

    He created THX sound (manual room corrrection—I think) for movie theaters while working at Lucasfilm. (Says “THX” stands for “Tomlinson Holman crossover,” THX 1138 a fortuitous coincidence.)

    He says he came up with the term “5.1.”

    He cofounded Audyssey Laboratories, which makes the audio calibration technology (https://en.wikipedia.org/wiki/Audyssey_Laboratories#Technologies) that powers The Wirecutter’s current pick for AV receiver (https://thewirecutter.com/reviews/best-receiver/), in 2002. (Also, be sure to check out the eVR far field voice technology they’re advertising on their website (https://audyssey.com).)

    He was an advocate for left and right front height channels (popularized by Dolby as “Dolby Atmos” in 2012). And possibly using two subwoofers (one for each octave, 20-40 and 40-80Hz—I think).

    Toward the end of the podcast he talks about incorporating psychoacoustics into audio designs with digital signal processing. The “r/audiophile” review of HomePod by “u/WinterCharm” says Apple is using “Fletcher–Munson curves,” (a psychoacoustic finding of loudness perception) as part of its calibration process (https://www.reddit.com/r/audiophile/comments/7wwtqy/_/du4rp5j/?context=1).
     
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  3. bobtambooooo macrumors newbie

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    Really interesting to read and hear about
     
  4. jjjjjooooo thread starter Suspended

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    “Audio’s Circle of Confusion” (http://seanolive.blogspot.com/2009/10/?m=1).

    Came across this article, also from 2009, from Sean Olive, an “Acoustics Research Fellow” at Harman International (now a division of Samsung).
     

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3 February 12, 2018