As a translater I usually have to at least look at the algorithms, so I
thought I'd find another 512 floats and replace it with 1 float.
in module quantise.c
In function lpc_post_filter()
The Pfw array is not used after being created. Making it a variable saves
2k bytes.
Change:
float Pfw[FFT_ENC]; /* Post filter mag spectrum */
To:
float Pfw;
Change:
/* apply post filter and measure energy */
e_after = 1E-4;
for (i = 0; i < FFT_SIZE / 2; i++) {
Pfw[i] = powf(Rw[i], beta);
Pw[i].real *= Pfw[i] * Pfw[i];
e_after += Pw[i].real;
}
To:
/* apply post filter and measure energy */
e_after = 1E-4;
for (i = 0; i < FFT_SIZE / 2; i++) {
Pfw = powf(Rw[i], beta);
Pw[i].real *= Pfw * Pfw;
e_after += Pw[i].real;
}
eof
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