3 ms·
First paragraph is a description of single channel redbook CD-AUDIO format right? Second paragraph is basically describing FFT and inverse FFT. Third paragraph
by quantadev 2y ago
First paragraph is a description of single channel redbook CD-AUDIO format right? Second paragraph is basically describing FFT and inverse FFT. Third paragraph is basically how MP3s work right? Wavlets that are essentially FFTs (list of frequencies) over a finite range of time, with enough of them removed to compress the data.
- kragen 2y ago'wavelets' means something different
- quantadev 2y agoBoth FFT and FWT beak a signal down into frequency components. I used the word 'essentially' to make it clear I'm not equating the two but saying they both output frequency components, but that the FWT coefficients apply to specific points in time, whereas FFT doesn't
- kragen 2y agoyes, there are important similarities