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b7170e03c4
Only the first and last 128 points of the 512 point window were
applied, and the 256 between were taken to be one. They are not:
the window rises to 1.207 there. Every block was therefore up to
1.6 dB low over half its length, which left the output 0.7 dB low
on average and an error about 23 dB below the signal at all
frequencies.
Add the missing half of the table and apply it.
Checked with perfsim (Sansa e200v1 build) against ffmpeg's decode,
with the two previous fixes applied before and after:
level SNR
five plain stereo RM files -0.7 dB 23 dB -> 0.0 dB 54-57 dB
joint stereo RM file -0.7 dB 23 dB -> 0.0 dB 37-45 dB
joint stereo OMA file -0.7 dB 23 dB -> 0.0 dB 45 dB
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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| arm_support | ||
| fixedpoint | ||
| libsetjmp | ||
| microtar | ||
| mipsunwinder | ||
| rbcodec | ||
| skin_parser | ||
| tlsf | ||
| unwarminder | ||
| utf8proc | ||