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java - Downsample PCM audio 44100 to 8000 - Stack Overflow
https://stackoverflow.com/questions/19606526/downsample-pcm-audio-44100-to-8000#:~:text=The%20algorithm%20processes%20exactly%20882%20input%20samples%20and,160%20short%20values%20to%20the%20already%20processed%20samples.
Java - downsampling wav audio file - Stack Overflow
https://stackoverflow.com/questions/1579728/java-downsampling-wav-audio-file
java audio wav downsampling. Share. Improve this question. Follow asked Oct 16 '09 at 18:46. Jean-Francois Hamelin Jean-Francois Hamelin. 653 2 2 gold badges 9 9 silver badges 19 19 bronze badges. 1. It will be easier for us to help find your bugs if you post the code you're using now.
Recommended approach for downsampling 44.1kHz audio to ...
https://discourse.mozilla.org/t/recommended-approach-for-downsampling-44-1khz-audio-to-16khz-to-ensure-accurate-results/41468
This is the soxi of the audio file before downsampling. Input File : 'audio.wav' Channels : 2 Sample Rate : 44100 Precision : 16-bit Duration : 00:01:48.51 = 4785408 samples = 8138.45 CDDA sectors File Size : 19.1M Bit Rate : 1.41M Sample Encoding: 16-bit Signed Integer PCM and this is soxi after downsampling
Downsampling – PS Audio
https://www.psaudio.com/pauls-posts/downsampling/
Downsampling is audibly trivial compared to mixing with 16/44.1 tracks, given all the processing that typically goes on in a mixing session. Ironically, one of the reasons that modern mixing and mastering sometimes sounds awful (even on the 24/96 master) is that engineers can push the compression to ridiculous levels without introducing obvious …
lowpass filter - Understanding audio downsampling code ...
https://dsp.stackexchange.com/questions/37450/understanding-audio-downsampling-code-javascript-and-adapting-to-a-different-r
Generally, if you want to downsample a signal, you first need to bandlimit it so that any frequency content above the post-downsampling Nyquist rate are sufficiently attenuated, to avoid aliasing as much as needed for a particular application. jojek provided the frequency response in a comment above, which I will shamelessly reproduce here:
Upsampling and Downsampling - Stanford University
https://ccrma.stanford.edu/~jos/JFB/JFB_2up.pdf
Downsampling (Decimation) •Diagram: x yN •Basic Idea: Take every Nth sample. •Time Domain: y= DownsampleN(x), i.e., y[n] = x[Nn],n∈Z •Frequency Domain: Y = AliasN(X), i.e., Y(z) = 1 N NX−1 m=0 X z1 Ne−jm 2π N ,z∈C Thus, the frequency axis is expanded by factor N, wrapping Ntimes around the unit circle and adding.
hutm/JSSRC: Java SSRC Audio Resampler - GitHub
https://github.com/hutm/JSSRC
JSSRC project is aimed at creating high quality audio resampler written in pure java. It is based on the SSRC High Quality Audio Sampling Rate Converter ( http://shibatch.sourceforge.net/) by Naoki Shibata written in C. Naohide Sano ported the C code into java. Finally, a number of small modification were performed in order to have a java …
PCM down-sampling from 16-bit to 8-bit — oracle-tech
https://community.oracle.com/tech/developers/discussion/1273228/pcm-down-sampling-from-16-bit-to-8-bit
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Upsampling and Downsampling | Spectral Audio Signal …
https://www.dsprelated.com/freebooks/sasp/Upsampling_Downsampling.html
Upsampling and Downsampling. Upsampling. and. Downsampling. For the DTFT, we proved in Chapter 2 (p. p. ) the stretch theorem ( repeat theorem) which relates upsampling (``stretch'') to spectral copies (``images'') in the DTFT context; this is the discrete-time counterpart of the scaling theorem for continuous-time Fourier transforms (§ B.4 ).
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