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loudgain
ReplayGain 2.0 loudness normalizer based on the EBU R128/ITU BS.1770 standard (-18 LUFS, FLAC, Ogg, MP2, MP3, MP4, M4A, AAC, ALAC, Opus, ASF, WMA, WAV, AIFF, WavPack, APE)
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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
And that led me to this GitHub project which acts like mp3gain but uses the newer loudness algorithm for LUFS: https://github.com/Moonbase59/loudgain
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