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effectcraft/crates
vangel76andClaude Sonnet 5.5 fd84350122 opusenc: halve the a2nlsf bisection steps
Each root was refined with 40 bisection steps, which shrinks the bracket to
about 3e-15 rad. A Q15 NLSF step is 9.6e-5 rad, so 20 steps (3e-9 rad) are
far more than the quantiser can see. The saved cos calls are the remaining
bulk of the root search after the grid table.

The coded packet streams are byte-identical to the 40-step search on 24
configurations of 90 s: speech-like and music-like input, mono and stereo,
SILK NB 8k, MB 12k, WB 16k and 32k, hybrid SWB 32k and FB 64k.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
2026-10-25 12:04:03 +01:00
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2026-10-18 09:35:33 -04:00
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