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Interpolation - DSP Central - dspGuru
https://dspguru.com/dsp/faqs/multirate/interpolation/
As a linear process, the DSP sense of interpolation is somewhat different from the “math” sense of interpolation, but the result is conceptually similar: to create “in-between” samples from the original samples. The result is as if you had just originally sampled your signal at the higher rate. 3.1.2 Why interpolate?
The current state of the art in audio signal interpolation
https://dsp.stackexchange.com/questions/1277/the-current-state-of-the-art-in-audio-signal-interpolation
A minimum-phase filter interpolation kernel, as opposed to linear-phase interpolation kernel (with the same frequency response), would produce less pre-ringing during resampling to a higher sample rate, which may objectively measure as less accurate, but possibly psycho-acoustically sound "better" to humans.
Linear Interpolation | Physical Audio Signal Processing
https://www.dsprelated.com/freebooks/pasp/Linear_Interpolation.html
When interpolation occurs inside a feedback loop, such as in digital waveguide models for vibrating strings (see Chapter 6 ), errors in the amplitude response can be highly audible (particularly when the loop gain is close to 1, as it is for steel strings, for example).
interpolation - Preventing clipping in audio signal ...
https://dsp.stackexchange.com/questions/36869/preventing-clipping-in-audio-signal-processing
interpolation, if you think about it, should not give you "unexpectedly high" amplitudes; it might, depending on how you do it, increase the average amplitude by some factor, but since we aim to be bandlimited, there can't be wild fluctuations between the (scaled) input samples, and that would be necessary to introduce "dynamic range exceeding" …
DigitalAudioResamplingHomePage - Stanford …
https://ccrma.stanford.edu/~jos/resample/resample.pdf
Bandlimited interpolation of discrete-time signals is a basic tool having extensive application in digital signal processing. In general, the problem is to correctly compute signal values at arbitrary continuous times from a set of discrete-time samples of the signal amplitude. In other words, we must be able to interpolate the signal between ...
Resampling - dspGuru
https://dspguru.com/dsp/faqs/multirate/resampling/
The interpolation factor is simply the ratio of the output rate to the input rate. Given that the interpolation factor is L and the decimation factor is M, the resampling factor is L / M. In the above example, the resampling factor is 147 / 160 = 0.91875. 4.1.4 Is there a restriction on the resampling factor I can use? Yes.
Module 5 - Multirate Signal Processing
http://www.ee.ic.ac.uk/naylor/notes/dsp5.pdf
Example: Audio sample rate conversion recording studios use 192 kHz CD uses 44.1 kHz wideband speech coding using 16 kHz master from studio must be rate-converted by a factor 44.1 192 Digital Signal Processing – p.4/25
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