DSP
in [Hardware]
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Filtering Noise from a signal In class we analysed a signal and filtered the noise out. However the noise was in a different bandwidth to the original signal hence it was easy to filter. If noise and the signal were to overlap in freq. spectrum, are there any techniques to filter out the noise?? ... 4 Jun 2010 15:51
Filtering Noise from a signal In class we analysed a signal and filtered the noise out. However the noise was in a different bandwidth to the original signal hence it was easy to filter. If noise and the signal were to overlap in freq. spectrum, are there any techniques to filter out the noise?? ... 1 Jun 2010 19:43
how to use an early/late gate symbol sync for DPSK receiver? Hello, Short version: How does an early/late gate symbol synchronizer work for BPSK data? Detailed: I'm working on a digital receiver for a M-PSK transmitter (BPSK for now, but I want 4 or 8 PSK). The transmitter modulates the phase of a 1MHz carrier with a square pulse symbol shape - 250k symbols/sec. I am sa... 1 Jun 2010 17:29
Literature/Link references? Hi, If I need to run one or more instances of an algorithm simultaneously without one interfering with the other, what do you guys suggest that I should read about? The code has to be done strictly in ANSI C and it should be able to run on any platform independent of hardware and OS. Thank you. ... 1 Jun 2010 16:23
LMS to remove the unknown sinusoidal signal Hi All, my problem statement is as follows Prob: ===== a feedback signal which is a form of sinusoid or mix of sinusoids is getting mixed to the speech signal. So i would like to remove the unwanted sinusoidal signals. (here noise is sinusoid and not white noise) Experiment: =========== Trying to use L... 3 Jun 2010 20:07
How to spec jitter for a digital NCO Hi, Say I have a simple x-bit NCO running at 'fin' (100MHz). M and N are programmable. The output frequency of the NCO is given by: fout = fin*(N/M) Assuming a perfect input clock, how can I specify the jitter of 'fout'? I understand there are different measure of jitter but can't really figure out how they work w... 3 Jun 2010 13:23
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Compensating for reverbation FIR gain Hi, I have created a long FIR processor and run into trouble, that each impulse reponse recorded from real halls (or amps or something...) cause a different gain. Ideally I'd like to have no gain at all, but that's probably impossible. Anyway this is what I tried: 1) Normalize the kernel This doesn't help of cou... 31 May 2010 14:09
Convolution and FFTW question. Seems dumb*, but what the hey: (data sets are 1D PCM audio data) Convolution is O(n*m) where n is the length of one vector to be convolved, m is the length of the other vector. Convolution using FFT is alleged to be O(n log(n))... *part of this is things I can't easily find in the FFTW docs. 1) The product ... 25 Jun 2010 10:57
orthogonal and correlation Hi, If x and y and orthogonal, is it true that corr(x,y)=0? How can this be proved? cfy30 ... 4 Jun 2010 12:32 |