Samuel Melero (@samecues)

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

Re: Applications for a new FFT algorithm

Reply posted 7 months ago (04/28/2022)
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...
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...
Yes it is correct. In this WOLA paper you will find more info about this. I have had an approach very similar to yours.Synthesis windows helps to suppress the...
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...
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

Reply posted 9 months ago (02/19/2022)
Hi dudelsound!Thank you for your answer and for your suggestions. Yes, that's the scenario with MP3. I had not heard about exciters, and your envelope approach sounds...

Re: Extend FFT spectrum question

Reply posted 10 months ago (02/16/2022)
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

Reply posted 10 months ago (02/16/2022)
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

New thread started 10 months ago
Hi all!I have some strange question here. Imagine that I have this WOLA scenario:Signal -> SineWindow -> FFT -> Process -> IFFT -> SineWindow and...
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

Reply posted 4 years ago (04/27/2019)
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...

Use this form to contact samecues

Before you can contact a member of the *Related Sites:

  • You must be logged in (register here)
  • You must confirm you email address