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Decimation - dspGuru
https://dspguru.com/dsp/faqs/multirate/decimation/#:~:text=Loosely%20speaking%2C%20%E2%80%9Cdecimation%E2%80%9D%20is%20the%20process%20of%20reducing,throwing%20away%20samples%2C%20without%20the%20lowpass%20filtering%20operation.
Downsampling Audio, Decimation [Explained]
https://samplerateconverter.com/educational/downsampling
Decimation - dspGuru
https://dspguru.com/dsp/faqs/multirate/decimation/
Decimation consists of the processes of lowpass filtering, followed by downsampling. To implement the filtering part, you can use either FIR or IIR filters. To implement the downsampling part (by a downsampling factor of “M”) simply keep every Mth sample, and throw away the M-1 samples in between.
audio - Is FIR decimation the fastest possible method for ...
https://dsp.stackexchange.com/questions/41657/is-fir-decimation-the-fastest-possible-method-for-integer-downsampling
For example, polyphase decimation is a nice trick, but since RAM/cache is not an issue, I believe they should run in the same speed since they involve an equal number of multiplications. audio downsampling decimation
gnuradio - Decimation to listen to FM radio with gnu radio ...
https://ham.stackexchange.com/questions/6506/decimation-to-listen-to-fm-radio-with-gnu-radio
The FM demodulator further decimates its audio output after demodulation by a factor of 10 to get 48kHz since this is a common audio rate, and covers the entire range of human hearing. would it make a difference if I change audio decimation to 1 in WBFM Receive and change the decimation to 50 in rational resampler block?
Decimation Filter - an overview | ScienceDirect Topics
https://www.sciencedirect.com/topics/engineering/decimation-filter
Maximum audio input frequency = 4 kHz Solution Since m = 2 bits, and fs 2fmax = 4, 000kHz 2 × 4kHz = 500 we calculate n = m + 1.5 × log2( fs 2fmax) …
EECS Instructional Support Group Home Page
https://inst.eecs.berkeley.edu/~ee247/fa05/lectures/decimation.boser.pdf
and its audio application as the basis for decimation filter analysis • Sampling action at the modulator input inherently results in aliasing – 2980 and 3020kHz alias to 20kHz – 2999 and 3001kHz alias to 1kHz • No digital filter can separate frequency components that have aliased on top of one another
Incorrect downsampling audio range - MathWorks
https://www.mathworks.com/matlabcentral/answers/522946-incorrect-downsampling-audio-range
Incorrect downsampling audio range. Learn more about decimation, decimate audio, audio input range, audio decimation
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