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alehelandClaude Opus 5.5
f68e4369eb
aac::Decoder::set_sbr(true) decodes HE-AAC at twice the core rate with the SBR tool of ISO/IEC 14496-3 §4.6.18: QMF analysis and synthesis, frequency band tables, patching with LPC inverse filtering, envelope adjustment with limiter, boost, noise and sinusoids. TrackDecoder uses it in place of the 2x upsampler. Tables are transcribed from ETSI ES 201 980 Annex I. Matches ffmpeg's decoder on AudioToolbox HE-AAC streams of 1-6 channels: the same 962-sample delay, ~54 dB SNR, high band level within 0.01 dB. Parametric stereo is still not decoded. Refs #1121 Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
8 lines
139 B
Rust
8 lines
139 B
Rust
//! FilmCraft's `filmcraft-aac` integration tests.
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mod common;
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mod decoder_oracle;
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mod encoder_oracle;
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mod he_aac_oracle;
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mod robustness;
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