Commit graph

11 commits

Author SHA1 Message Date
Jean-Marc Valin
49ca99efa5 fixed-point: initial support for using the fixed-point MDCT (rest is still all
float)
2008-02-25 14:12:10 +11:00
Jean-Marc Valin
44830b0440 Float FFT now does the same scaling as the fixed-point FFT 2008-02-24 22:36:05 +11:00
Jean-Marc Valin
e8b6830f53 minor tweak to FFT 2008-02-24 22:06:04 +11:00
Jean-Marc Valin
d911bc4d0d Added a mixed-precision version of the FFT with 32-bit data and 16-bit twiddles. 2008-02-24 17:16:47 +11:00
Jean-Marc Valin
9ced5d042d Created an separate kiss_twiddle_cpx type to make it possible to use
different precision for twiddles and data.
2008-02-24 13:46:30 +11:00
Jean-Marc Valin
25649c1569 Fixed the FFT for higher precision 2008-02-22 16:19:39 +11:00
Jean-Marc Valin
af8402e033 Fixed stuff that got broken during the forward-backward split of the FFT 2008-02-22 12:13:59 +11:00
Jean-Marc Valin
6211c90def Split the radix functions into forward and backward versions, removed the
"inverse" flag from the state so it can be shared between the forward and
inverse transforms.
2008-02-08 14:21:20 +11:00
Jean-Marc Valin
d7dfb00886 Made pre-computed twiddles the same for forward and inverse FFT 2008-02-08 13:25:03 +11:00
Jean-Marc Valin
e6586d21fa Real FFT cleanup, plus some testcases 2008-02-08 10:48:15 +11:00
Jean-Marc Valin
4d0a7d0f1b Now using an MDCT implementation I can actually understand. 2008-02-08 10:22:52 +11:00