DSP
in [Hardware]
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help with LP filter implementation in c I'm new to and struggling with a c code implementation for an available LP filter, http://www.musicdsp.org/files/filters004.txt. The filter function, float iir_filter(float input,FILTER *iir) takes a float input and a reference to the FILTER structure. I believe I have the filter code working, and in my rudimentary im... 26 Jul 2010 08:19
minimum phase signal recovery.... Hello Forum, I have read that in some applications a signal is distorted by an LTI system... To recover the original signal we could filter with inverse filter. But this procedure would only work with minimum-phase systems... Is that true? Why? thanks fisico32 ... 28 Jul 2010 00:57
paley-Weiner criterion (causality) Hello Forum, the Paley-Wiener criterion is the frequency equivalent of the causality condition in the time domain. It states that the magnitude of the transfer function can be exactly zero only a discrete frequencies but not over a finite band of frequencies... Why not? Is there a more conceptual explanation for ... 26 Jul 2010 16:01
IMBECILE::Re: FFT Questions Raeldor wrote: Hi Guys, I want to use FFT for an audio programming project I'm working on and had some (what are probably quite simple questions). I understand the concept that FFT converts a time based array of data into a frequency based array of data, and I found a nice library called FFTW ... 26 Jul 2010 16:01
FFT Questions Hi Guys, I want to use FFT for an audio programming project I'm working on and had some (what are probably quite simple questions). I understand the concept that FFT converts a time based array of data into a frequency based array of data, and I found a nice library called FFTW which looks like it will fit the ... 30 Jul 2010 14:04
Fftw for TS101. Hi guys, Great job. I was looking for exactly the same thing. Could u pls guide me on how to compile FFTW on visualDSP environment ... 24 Jul 2010 23:05
Coherent sampling with IF Freq Hello All, I have a question : Say that I'm trying to sample coherently an IF multi-tone signal. IF = From RF to some intermidate Freq. do I need to be coherent to the IF freq? or do I have to be coherent to the spacing between the tones in the signal? both? Thx, Josh. ... 25 Jul 2010 03:20
Fibonacci to Galois LFSR state conversion Given the shift register state of a Fibonacci LFSR (aka SSRG configuration) and the taps of an equivalent Galois LFSR (aka MSRG configuration), how does one compute the Galois LFSR shift register state that produces the sequence phase aligned with the Fibonacci LFSR. In other words, I know the SSRG shift register s... 25 Jul 2010 11:52
when should one perform fft based filtering? what are the problems associated with FFT based filtering? and when should one decide to switchover from convolution based time domain filtering to FFT based filtering? bharat ... 24 Jul 2010 11:14
when should one perform fft based filtering? what are the problems associated with FFT based filtering? and when should one decide to switchover from convolution based time domain filtering to FFT based filtering? bharat ... 28 Jul 2010 12:56 |