3 ms·
> This stands out to me since doing that on a battery powered device is unusual This is absolutely not true. I would bet that > 50% of all devices shipping wit
by rrss 7y ago
> This stands out to me since doing that on a battery powered device is unusual
This is absolutely not true. I would bet that > 50% of all devices shipping with a digital signal processor are doing FFT/IFFT at some point.
> useful FFTs require rather large buffers of memory
Loads of realtime FIR filtering is implemented with overlap-add or overlap-save - i.e. block-based FFT/IFFT.
- cushychicken 7y agoPlus, many ffts actually benefit from fewer points and less bandwidth - especially in voice applications, where much of the spectral content is under 4kHz.