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An Interpolation Filter Design for the Full Digital Audio ...
https://www.researchgate.net/publication/263635540_An_Interpolation_Filter_Design_for_the_Full_Digital_Audio_Amplifier
Download Citation | An Interpolation Filter Design for the Full Digital Audio Amplifier | A computationally efficient interpolation filter with a low-distortion performance is a key component to ...
CIC interpolation filter design in the audio decoder ...
https://ieeexplore.ieee.org/document/5544510
CIC interpolation filter design in the audio decoder. Abstract: In order to get high-quality audio output in the audio decoder, analog low-pass filter to reduce the design difficulty, then the interpolation filter as its digital signal processing part of an integral important part of CIC filters are commonly used in the interpolation process ...
Designing a 2x interpolation filter for audio - Signal ...
https://dsp.stackexchange.com/questions/26620/designing-a-2x-interpolation-filter-for-audio
Show activity on this post. I want to perform 2x interpolation on an audio signal sampled at 44.1KHz by upsampling the signal by adding a zero after each original sample and then using a lowpass filter to interpolate the results. Assuming an analogue elliptical filter (of order 10 or lower) as the basis for the design.
Design of the interpolation filter applied in the audio ...
https://www.researchgate.net/publication/269298922_Design_of_the_interpolation_filter_applied_in_the_audio_signals_processing
Design of a 96-times interpolation filter applied in audio signals processing in the system which adopts the cascaded half-band filters and CIC filter. The design is …
Design of efficient digital interpolation filters and ...
https://ieeexplore.ieee.org/document/4540251
Design of efficient digital interpolation filters and sigma-delta modulator for audio DAC Abstract: A narrowband sigma-delta (SigmaDelta) audio digital-to-analog converter (DAC) with a digital signal interpolation part and single loop, 5-bit SigmaDelta modulator in the final stage is developed.
Interpolation Filter - an overview | ScienceDirect Topics
https://www.sciencedirect.com/topics/engineering/interpolation-filter
Next, we explain the properties of polyphase filters (i.e., they have all-pass gain and possible different phases). Each polyphase filter ρ k (n) operating at the original sampling rate f s (assuming 8 kHz) is a downsampled version of the interpolation filter h(n) operating at the upsampling rate Lf s (32 kHz assuming an interpolation factor of L = 4).
MT-017: Oversampling Interpolating DACs
https://www.analog.com/media/en/training-seminars/tutorials/MT-017.pdf
"interpolation filter" (a digital circuit which accepts data at a low rate, inserts zeros at a high rate, and then applies a digital filter algorithm and outputs data at a high rate), a -Δ modulator Σ (which effectively acts as a low pass filter to the signal but as a high pass filter to the
Understanding Upsampling/Interpolation | Audio Science ...
https://www.audiosciencereview.com/forum/index.php?threads/understanding-upsampling-interpolation.1447/
But you must still have an interpolation filter to make it work; just sticking in zeros does not change the signal spectrum as Werner said. And of course there will be less in-band phase shift and roll-off with the softer filter roll-off, and it …
Interpolation Basics - Neil Robertson
https://www.dsprelated.com/showarticle/1293.php
The interpolation filter has fs = 400 Hz and is synthesized using the Parks-McClellan algorithm (Matlab function firpm). The coefficients are plotted in Figure 8, and the filter’s frequency response is shown in the center plot of Figure 5.
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