Every milestone from 1881 stereo to 2021 Apple Spatial Audio on one page: dates, formats, channel counts, and what each era's file actually stores. Plus the 5.1 / 7.1 / 7.1.4 / 9.1.6 notation decoded.
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The book · Volume 4 of 7
Audio for Video: A Complete Guide to Sound in Video Products: From PCM and Codecs to Loudness, Accessibility, and Real-Time Voice Processing
This multichannel audio history timeline runs from 1881 stereo to Apple Spatial Audio and decodes the 5.1, 7.1, 7.1.4 and 9.1.6 notation. Volume 4 covers this topic in depth: channels and layouts, sampling and bit depth, codecs such as AAC and Opus, and loudness, so you know what each multichannel file actually stores and how to deliver it. Written by Nikolay Sapunov, CEO at Fora Soft.
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