search for: cfft

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2017 Apr 12
2
CELT CFFT size configuration
Dear all, Sorry for this simple and maybe stupid question, I'm working in the implementation of opus for ARMv7e microcontroller using a library CMSIS/DSP used to calculate the CFFT and MDCT based on the DCT-IV. my question is: In the implementation of Celt you have used a fixed length CFFT equal to 1920, I want to know if there is some issues which can appear if a change that configuration for a cfft of size 2048, some of you could give me some support about that?, I ask b...
2017 Apr 13
0
CELT CFFT size configuration
Dear all. According with my question. CELT CFFT size configuration I'm not completely sure about how the kiss_fft works for sizes which are not power of two, as occur in the case of celt which calculate the mdct using a fft sizes of 480, 240, 120, and 60, I guess that internally the input data is padded with zeros in order to compute effici...