MDCT¶
This toolkit implements several related transforms and their inverses:
- Modified Discrete Cosine Transform (MDCT)
- Modified Discrete Sine Transform (MDST)
- Modulated Complex Lapped Transform (MCLT) aka Complex Modified Discrete Cosine Transform (CMDCT)
All transforms are implemented as
- the complete lapped transform, along with windowing and time domain aliasing cancellation (TDAC) reconstruction and
- the core un-windowed standalone transform.
All transforms are implemeted in
mdct.fast
,a fast, FFT-based method (for actual use), see [Bosi]mdct.slow
, a slow, pure-Python fashion (for testing) and
Indices and tables¶
[Bosi] | Marina Bosi, Richard E. Goldberg and Leonardo Chiariglione, “Introduction to Digital Audio Coding and Standards”, Kluwer Academic Publishers, 01 December, 2002. |