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DSP Discussion Groups & Forums

From here, you can access several active DSP related Discussion Groups & Forums that are meant to facilitate the exchange of information between DSP engineers and DSP researchers. You can subscribe to one or several discussion groups with confidence, as all groups are moderated and you can unsubscribe at any moment very easily.

Comp.DSP | Analog Devices DSPs | Audio Signal Processing | TMS320C28x | TMS320C3x | TMS320C54x | TMS320C55x | TMS320C6x | Code-Composer | Echo Cancellation | TMS320C24x | DSP & FPGA | Image Signal Processing | Matlab DSP | Freescale DSPs | Speech Recognition | Speech Coding | TI Sitara, OMAP, Stellaris, etc. |

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Data extrapolation to reconstruct signal   [4 Articles]
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Posted by fffranco in Comp.DSP on Apr 18 2014
I try to expose my problem from the beginning: My goal is to get a continuous respiration signal deriving it from ECG signal. From the ECG (sampled at 500 Hz), after some filterin... Data extrapolation to reconstruct signal

Errors in phase due to wrong alignment/post processing?   [4 Articles]
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Posted by Peter Mairhofer in Comp.DSP on Apr 17 2014
Hi, I hooked together a Vector Signal Generator (VSG) and a Vector Signal Analyzer (VSA). I create a complex signal "x" in MATLAB, sent it to the VSG which does I/Q modulat... Errors in phase due to wrong alignment/post processing?

Convert to higher sample rate   [57 Articles]
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Posted by B in Comp.DSP on Apr 17 2014
Any opinions on the easiest way to convert an audio track to a higher sample rate? Mostly likely x2 or x4. It occurred to me that it could be done with FFT, then 'resample' but... Convert to higher sample rate

IIR Coefficient Calculation   [3 Articles]
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Posted by ger_lough in Comp.DSP on Apr 17 2014
I am having difficulty finding any info on how to calculate digital IIR filter coefficients. I know this can be done in MATLAB, for example, but I am interested in changing IIR spe... IIR Coefficient Calculation

the 0th and 1st derivative of a scary function   [72 Articles]
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Posted by robert bristow-johnson in Comp.DSP on Apr 16 2014
in case anybody wonders why my participation might be a little spotty of late, take a look at this function of time: http://waterdata.usgs.gov/vt/nwis/uv?dd_cd=3D03&format=3D... the 0th and 1st derivative of a scary function

Pitch Estimation using spectral Autocorrelation method.   [7 Articles]
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Posted by in Comp.DSP on Apr 16 2014
please help me to find pitch of a speech signal using spectral autocorrelation method. Thank You Regards Girish Babu S ... Pitch Estimation using spectral Autocorrelation method.

Generate digital dither   [23 Articles]
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Posted by B in Comp.DSP on Apr 13 2014
Any recommended algorithms for generating digital dither signals? How is this normally done? ... Generate digital dither

Computationally efficient sqrt(x^2 + y^2 + z^2)   [15 Articles]
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Posted by Tim Wescott in Comp.DSP on Apr 13 2014
Subject line says it: I need a quick, approximate (+/- 1%) 3D vector length given its Cartesean components. Processor is a nuthin-special ARM m4, without the coprocessor. Th... Computationally efficient sqrt(x^2 + y^2 + z^2)

explicit duration HMM   [2 Articles]
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Posted by in Comp.DSP on Apr 13 2014
hi, I'm looking for a methodology to find the optimal state sequence given an observation sequence (using viterbi or otherwise) in an explicit duration HMM. All the paper... explicit duration HMM

IIR biquad implementation in fixed point / integer   [10 Articles]
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Posted by Eugen in Comp.DSP on Apr 12 2014
Hello, I tried implementing a LPF biquad (that works perfectly in floating point) with: a = [1.00000, -1.90887, 0.91129], b = [6.1150e-04, 1.2230e-03, 6.1150e-04] in fixed poi... IIR biquad implementation in fixed point / integer
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