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lowpass filter - Understanding audio downsampling code ...

    https://dsp.stackexchange.com/questions/37450/understanding-audio-downsampling-code-javascript-and-adapting-to-a-different-r
    The audio is always in $32$-bit floats (from the Web Audio API). The source sample rate is typically, but perhaps not always $48\textrm{ kHz}$ . The output is always $16\textrm{ kHz}$ at the moment, although I'm interested in providing an $8\textrm{ kHz}$ option which is part of why I want to understand this better.

python - Downsampling wav audio file - Stack Overflow

    https://stackoverflow.com/questions/30619740/downsampling-wav-audio-file
    def downsampleWav(src, dst, inrate=44100, outrate=16000, inchannels=2, outchannels=1): if not os.path.exists(src): print 'Source not found!' return False if not os.path.exists(os.path.dirname(dst)): os.makedirs(os.path.dirname(dst)) try: s_read = wave.open(src, 'r') s_write = wave.open(dst, 'w') except: print 'Failed to open files!' return False …

Sampling in Matlab and downsampling an audio file ...

    https://www.gaussianwaves.com/2014/07/sampling-a-signal-in-matlab/
    Going back to the previous example of ‘gong’ audio vector loaded in the Matlab variable space, the downsampling operation can be coded as follows. >>M=2 % downsample by 2 >>y_down = y (1:M:end); % keep every M-th sample. Note: Downsampling↗ is …

Downsampling Audio Sample - CodeGuru

    https://forums.codeguru.com/showthread.php?463186-Downsampling-Audio-Sample
    After capturing sound with DirectX I sample down the audio data from 16 to 8bit. Here the downsample code. I´ve got it from a example out of a praktika of creating a voip client. const int RATIO = (SAMPLERATE/8000); const int size2 = (size/RATIO); short* downsampledAudio = newshort [size2]; signedlong summe = 0;

decimation or down sampling matlab code | MATLAB source code

    https://www.rfwireless-world.com/source-code/MATLAB/decimation-down-sampling-matlab-code.html
    Downsampling using decimate matlab function % Generate the downsampled signal using decimate function y=decimate(x,M,'fir'); m=0:N/M-1; figure,stem(m,y(1:N/M));title('MATLAB decimate function output');xlabel('Time');ylabel('magnitude');

GitHub - Picovoice/web-voice-processor: A library for real ...

    https://github.com/Picovoice/web-voice-processor
    Web Voice Processor. Made in Vancouver, Canada by Picovoice. A library for real-time voice processing in web browsers. Uses the Web Audio API to access microphone audio. Leverages Web Workers to offload compute-intensive tasks off of the main thread. Converts the microphone sampling rate to 16kHz, the de facto standard for voice processing engines.

Avoiding Android Mixer/48Khz upsampling of 44.1/16 audio ...

    https://forum.xda-developers.com/t/avoiding-android-mixer-48khz-upsampling-of-44-1-16-audio.3933075/
    Re your point (3) I did actually spent quite a bit of time studying the source code for the ESS codec driver for the various LG models (es9218p.c and es9218p.h in the kernel source code). Interestingly, 44100 is NOT one of the sample rates listed in there as being supported.

Downsampling - PS Audio

    https://www.psaudio.com/pauls-posts/downsampling/
    Downsampling. Nearly all master digital studio recordings are made at higher sample rates and bit depths than a CD can handle, even if it’s only 48kHz. For example, Keith Johnson at Reference records all their materials at 176.4kHz/24 bits and nearly every recording studio is making masters at 96kHz/24 or higher.

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