Hi,
This formula is meant to calculate the threshold for MDCT from the threshold
for FFT. It indeed only works when that threshold is calculated for every
frequency bin.
>
> Hi,
>
> Tmdct(i) can be calculated directly from Tdft(i) with this formula:
>
> Tmdct(i) = (2/M) * Tdft(i) * (cos( 2*Pi*n0*(i + 0.5)/N - /_S(i) ))^2
>
> where:
> M = number of samples in frequency domain
> N = number of samples in time domain
> n0 = (M+1)/2
> S(i) = the DFT, where /_S(i) is the phase
>
> If you want the full explanation, please let me know.
>
> Bye, Menno
>
--
MP3 ENCODER mailing list ( http://geek.rcc.se/mp3encoder/ )
