Michel0528's articles:

Items(61) /7 Next >> Last >|

Cepstral analysis made from log-scale FFTs 8 31 (10/10/2009 1:07:21 PM) comp.dsp I'm trying to find a way to detect the pitches of fundamental frequencies of harmonic content shown in log-scale FFTs. Basically, all I have is the log-scale FFTs of bits of sound which may or may not contain h... Michel

Noise convolution? 3 31 (5/15/2009 10:56:02 AM) comp.dsp These last few days using my program Photosounder ( http://photosounder.com ) I've been experimenting with a new sort of weird reverb-like effect on sounds (detailed with examples here http://photosounder.com/b... Michel

Sharpening oversampled STFT-based spectrograms 17 29 (12/28/2008 1:38:40 PM) comp.dsp If you made a spectrogram by windowing in the time domain using an infinitely long window (let's go for a Gaussian function) every one sample in the signal (that is centre your window on each sample and DFT eac... Michel

Positive functions in both their time and frequency representations? (i.e. Gaussian function) 18 21 (11/14/2008 12:01:46 AM) comp.dsp Are there any (windowing) functions out there that are positive in the time domain as well as in the frequency domain? I know the Gaussian function is strictly positive in both, the Fourier transform of a Gauss... Michel

White noise generation in the frequency domain 28 24 (9/22/2008 6:41:34 AM) comp.dsp Hello all, I'd like to synthesise white noise in the frequency domain, the reason for that is that I need to make it go through a bank of filters so it's more convenient if I don't have to perform a FFT on it.... Michel

Confusion about 2D DFTs 12 25 (8/3/2008 1:17:45 PM) comp.dsp Here's my problem. I have an image to be processed (well, deconvolved pretty much), and a star-shaped impulse response I want to deconvolve it with. The impulse response is symmetric in both the vertical and ho... Michel

Questions regarding DSP-related telework 3 44 (5/12/2008 11:25:36 PM) comp.dsp Here's my situation : I'm 21, I don't have any degree, hardly any "commercial experience" (only a few internships in IT), and I recently emigrated from France to Dublin, Ireland. Considered all of this we might... Michel

fopen() with full path affecting subsequent fopen calls 4 19 (4/28/2008 12:14:10 PM) comp.lang.c I made a program that accepts as parameters an input file name that we'll call file1, and an output file name that we'll call file2, and opens on its own a configuration file called file3. My program works corr... Michel

Frequency resolution in DCTs vs. DFTs 2 24 (3/12/2008 3:59:18 PM) comp.dsp I never used Discrete Cosine Transforms yet, but basically (correct me if I got it wrong) it's pretty much the same as making the real signal symmetric in the time domain (thus twice longer), performing a DFT a... Michel

Step response from adding impulse responses together 12 19 (2/18/2008 7:17:46 PM) comp.dsp Let's say I have a signal (an impulse response) which contains no frequency components above a certain frequency. Let's say that the highest frequency component has a period matching to half the width of the im... Michel

Michel0528's replies:

Items(100) /10 Next >> Last >|

Spectral Analysis & Resynthesis of Audio Signals.. Anyone else into this? Applications/Tools that reliably produce good results? 29 26 (5/30/2008 12:58:11 AM) comp.dsp I've been extremely interested in Spectral Analysis & Resynthesis of Audi Signals for as long as I've known of it. The idea of understanding an manipulating a timbre in terms of basic, intuitive building block... erik.bowen (113)

Removing click from realtime microphone playback 10 19 (8/2/2008 12:05:52 PM) comp.dsp I am taking microhone input from a logitech usb microhone on an xbox360 and outputting the audio singal in realtime. It's mostly working, except I'm getting some annoying 'clicks' inbetween the good signal. I... glowkeeper (26)

Confusion about 2D DFTs 12 25 (8/3/2008 1:17:45 PM) comp.dsp Here's my problem. I have an image to be processed (well, deconvolved pretty much), and a star-shaped impulse response I want to deconvolve it with. The impulse response is symmetric in both the vertical and ho... Michel0528 (473)

White noise generation in the frequency domain 28 24 (9/22/2008 6:41:34 AM) comp.dsp Hello all, I'd like to synthesise white noise in the frequency domain, the reason for that is that I need to make it go through a bank of filters so it's more convenient if I don't have to perform a FFT on it.... Michel0528 (473)

Positive functions in both their time and frequency representations? (i.e. Gaussian function) 18 21 (11/14/2008 12:01:46 AM) comp.dsp Are there any (windowing) functions out there that are positive in the time domain as well as in the frequency domain? I know the Gaussian function is strictly positive in both, the Fourier transform of a Gauss... Michel0528 (473)

Sharpening oversampled STFT-based spectrograms 17 29 (12/28/2008 1:38:40 PM) comp.dsp If you made a spectrogram by windowing in the time domain using an infinitely long window (let's go for a Gaussian function) every one sample in the signal (that is centre your window on each sample and DFT eac... Michel0528 (473)

Noise convolution? 3 31 (5/15/2009 10:56:02 AM) comp.dsp These last few days using my program Photosounder ( http://photosounder.com ) I've been experimenting with a new sort of weird reverb-like effect on sounds (detailed with examples here http://photosounder.com/b... Michel0528 (473)

Cepstral analysis made from log-scale FFTs 8 31 (10/10/2009 1:07:21 PM) comp.dsp I'm trying to find a way to detect the pitches of fundamental frequencies of harmonic content shown in log-scale FFTs. Basically, all I have is the log-scale FFTs of bits of sound which may or may not contain h... Michel0528 (473)

OT:SETI 83 29 (3/4/2008 8:57:03 AM) comp.dsp http://news.bbc.co.uk/2/hi/science/nature/7275370.stm Just what frequencies are the SETI people listening to? I assume they are not listening for TV or ordinary radio signals since I think we argued a year bac... gyansorova (854)

fopen() with full path affecting subsequent fopen calls 4 19 (4/28/2008 12:14:10 PM) comp.lang.c I made a program that accepts as parameters an input file name that we'll call file1, and an output file name that we'll call file2, and opens on its own a configuration file called file3. My program works corr... Michel0528 (473)