### Samuel Melero (@samecues)

Audio DSP enthusiast. Looking for great DSP related publications. Still learning a lot!

## Re: filtering using FFT/iFFT

Not on IDFT/IFFT cases.If you do IFFT the terms 0 aren't in the sum. So no cos sin terms are summed in the synthesis and kaz is right. Another issue is that the...

## Re: Applications for a new FFT algorithm

Yeah! New fast algorithm! And no twiddle factors! Great! I can't imagine doing a DFT without some sines and cosines, I'm very interested in that. Is it an integral...

## Re: Can an FFT be shared for spectral estimation and linear filtering?

You don't need WOLA for linear filtering, but you need it for your approach (Welch analysis + filtering). You can do linear filtering with WOLA too, in your scenario...

## Re: Can an FFT be shared for spectral estimation and linear filtering?

If I understand well your question, you want to make some filtering on the frequency domain while doing Welch's method. If your filter is simple (say for example...

## Re: Selecting number of FFT points for Overlap add with spectral modifications.

Hi Mil1o, for spectral subtraction WOLA (weighted overlap add) is a better option because spectral subtraction is a non linear operation. In this approach you don't...

## Re: Extend FFT spectrum question

Hi ing_jpu!The spectrum has a range of 0 to 22050Hz. The original signal has a cutoff at 15000Hz. My question is to copy a portion of this spectrum (11000 Hz to...

## Re: Extend FFT spectrum question

Hi fharris!- Samplerate is 44100Hz. Audio Signal. I pick and paste bins directly from the 11Khz - 15Khz to 16Khz - 20Khz. Maybe the issue is phase?- Window is the...

## Extend FFT spectrum question

Hi all!I have some strange question here. Imagine that I have this WOLA scenario:Signal -> SineWindow -> FFT -> Process -> IFFT -> SineWindow and...

## Re: Is cropping the spectrum a valid downconversion method?

I think you are looking for linear convolution and overlap. If you need to do "non linear" spectral processing, look for "weighted overlap add" like in MP3 sound...

## Re: SNR of a pulsed signal in noise

If you can do DFTs of e.g. t2-t1/2 then in the DFTs the chirp signal will be contained only in part of spectrum. The chirp portion in DFT will be flat (signal power) and...

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