weighting that didn't seem to help anyway.

intruduces a bit of an encoder-decoder mismatch (Q8 in dB), but it'll be
reduced when the interals of quant_energy_mono() are properly converted to
fixed-point and oldEBands gets rounded instead of truncated.

is used by both by the encoding and decoding functions.

masking computation functions.

16-bit, but at this point, it's not worth the trouble and loss of accuracy.

range for the mono encoder.

float)

different precision for twiddles and data.

overlap-add during synthesis.