Added album normalization as recommended in AES77#168
Merged
complexlogic merged 2 commits intocomplexlogic:masterfrom Oct 29, 2025
Merged
Added album normalization as recommended in AES77#168complexlogic merged 2 commits intocomplexlogic:masterfrom
complexlogic merged 2 commits intocomplexlogic:masterfrom
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Owner
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Code looks fine at a quick glance. I'll have time to do a more in-depth review and testing later. Please add "Fixes #132" to the end of your post so that issue is auto-closed if this PR is merged. |
complexlogic
requested changes
Oct 28, 2025
src/scan.cpp
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| track.result.album_peak = album_peak; | ||
| track.result.album_loudness = album_loudness; | ||
| if (config.album_as_aes77) { | ||
| double album_loudness = -HUGE_VAL, album_peak = 0.0, album_gain; |
Owner
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Don't use multiple statements in a line. Please separate them.
src/scan.cpp
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| for (const Track &track : tracks) { | ||
| if (album_loudness < track.result.track_loudness) { | ||
| album_loudness = track.result.track_loudness; | ||
| album_gain = track.result.track_gain; |
Owner
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Assign album loudness only. Album gain will be calculated later at the end of the loop.
src/scan.cpp
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| double album_gain = (type == FileType::OPUS && config.opus_mode == 's' ? -23.0 : config.target_loudness) | ||
| - album_loudness; | ||
| for (Track &track : tracks) { | ||
| track.result.album_gain = album_gain; | ||
| track.result.album_peak = album_peak; | ||
| track.result.album_loudness = album_loudness; |
Owner
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Move this code to after the if/else block so that it is common to both -a and -e cases.
src/scan.cpp
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| for (Track &track : tracks) { | ||
| track.result.album_gain = album_gain; | ||
| track.result.album_peak = album_peak; | ||
| track.result.album_loudness = album_loudness; | ||
| } |
Owner
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Delete (see above comment about making this code common).
complexlogic
approved these changes
Oct 29, 2025
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I needed the option to calculate the album loudness according to the AES77 specification, which recommends to just use the loudest track of an album as the reference for all tracks, and thought it may be helpful for others as well.
Fixes #132