Laurent le faucheur (@laurentlefaucheur)
As mentioned by dgshaw6 audio telephony Codecs are using IIR, the main reason being the complexity and lower group-delay compared to FIR interpolator/decimator....
Hi, you should look at PSOLA (pitch synchronous overlap-and-add) description (https://en.wikipedia.org/wiki/PSOLA).
You can measure DR using a sinewave of fixed frequency and varying amplitude from MAX to 0. You use a notch filter (or FFT) to analyze the processed output.The...
HiI filtered your data to keep the bands 800-1200 and 2400-3400. Then downsampled it to 11.025kHz. The program below gives a correlation peak at 18k samples (4190x48k/11,...
Hi Andrew,In a 3MHz PDM stream there is high energy content above 20kHz (the "noise transfer function" of the PDM modulator). Each time you drop PDM samples, you...
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