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What's the effect of downsampling on the signal? | Forum ...
https://www.edaboard.com/threads/whats-the-effect-of-downsampling-on-the-signal.81827/#:~:text=Down%20sampling%20or%20Decimation%20is%20a%20method%20to,aliasing%20are%20distortion%20of%20the%20signal%20upon%20reconstruction.
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.
downsampling - Trying to down-sample audio - Signal ...
https://dsp.stackexchange.com/questions/20303/trying-to-down-sample-audio
def downsample s = low_pass_filtered_signal_by_half_target_sample_rate samples_to_discard = (sample_rate.to_f / target_sample_rate).floor // (44100.0 / 8000.0).floor s1_n = 0 for (n = 0; n < N; n++) { if (n % samples_to_discard == 0) { s1 [s1_n] = averaged (n, samples_to_discard) s1_n += 1 } } end def averaged (start_index, samples_to_discard) sum = 0 for (n = start_index, n < …
Upsampling and Downsampling - Stanford University
https://ccrma.stanford.edu/~jos/JFB/JFB_2up.pdf
•Advanced audio compression algorithms (“perceptual audio coding”) are based on critically sampled filter banks, for obvious reasons. •Important Point: We normally do not require critical sampling for audio analysis, effects, and music 19 applications. We normally only need it when compression is a requirement.
Signal audio - effect downsampling - MathWorks
https://www.mathworks.com/matlabcentral/answers/538719-signal-audio-effect-downsampling
You see, downsampling the signal alone doesn't increases the frequency of it. This effects of high pitch happens because you play the new sound with the older sampling rate. This makes the frequency of the sound increase M times, since it is like you're reading the "same" data but M times faster.
Q. What’s the best way to downsample? - Sound on Sound
https://www.soundonsound.com/sound-advice/q-whats-best-way-downsample
In essence, though, it all comes down to a virtual reconstruction of the full audio waveform from the source digital samples, and then calculating the amplitude values of that waveform at the specific moments in time when the output samples are required (at whatever new rate).
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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