BR_Loudness: make loudness calc work for Ambisonics and more surround formats#2018
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kronihias wants to merge 1 commit into
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BR_Loudness: make loudness calc work for Ambisonics and more surround formats#2018kronihias wants to merge 1 commit into
kronihias wants to merge 1 commit into
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… only W channel) and surround up to 9.1.4 in Dolby/SMPTE channel ordering
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✅ Build sws 1235-master completed (commit e9b937d986 by @kronihias) Windows 64-bitWindows 32-bitmacOS x86 64-bitmacOS x86 32-bitmacOS ARM 64-bitLinux x86 64-bitLinux x86 32-bitLinux ARM 64-bit |
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Improvements when applying or measuring loudness normalization.
Ambisonics support — detects HOA content by perfect-square channel count (First-Order-Ambi=4, Second-Order=9, Third-Order=16, …). Measures only the W channel (ch0) per Peters & Epain (AES 154th 2023), which is as accurate as full loudspeaker rendering at any order - and very fast.
LFE bug fix — ch3 was mapped to LEFT_SURROUND (G=1.41); in Dolby/SMPTE ordering ch3 is LFE, which must be excluded (UNUSED).
Support 7.1 / 7.1.2 / 7.1.4 / 9.1.4 — channels beyond 5.1 were silently ignored. Now mapped per BS.1770-5.