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Decimation - dspGuru
https://dspguru.com/dsp/faqs/multirate/decimation/#:~:text=Loosely%20speaking%2C%20%E2%80%9Cdecimation%E2%80%9D%20is%20the%20process%20of%20reducing,throwing%20away%20samples%2C%20without%20the%20lowpass%20filtering%20operation.
Decimation - dspGuru
https://dspguru.com/dsp/faqs/multirate/decimation/
2.1 Basics 2.1.1 What are “decimation” and “downsampling”? Loosely speaking, “decimation” is the process of reducing the sampling rate. In practice, this usually implies lowpass-filtering a signal, then throwing away some of its samples. “Downsampling” is a more specific term …
Analyses of Decimation Filter Stopband Attenuation ...
https://scindeks-clanci.ceon.rs/data/pdf/1821-3251/2018/1821-32511802086P.pdf
Abstract — Decimation is a frequently used technique in audio signal processing. This paper investigates the influence of the values of stopband attenuation of decimation filters on the subjective perception of resulting audio signals. In practice, the demands for stopband attenuation of these filters are quite rigorous.
1 Basic Multirate Operations 1.1 Decimation and ...
http://classweb.ece.umd.edu/enee630.F2012/slides/part-1_summary_F12.pdf
5.1 Applications in Digital Audio Systems 5.2 Subband Coding / Compression 5.A Warm-up Exercise Subband Coding 1 x 0[n] and x 1[n] are bandlimited and can be decimated 2 X 1(!) has smaller power s.t. x 1[n] has smaller dynamic range, thus can be represented with fewer bits Suppose now to represent each subband signal, we need x 0[n]: 16 bits ...
Decimation — decrease sample rate by integer factor ...
https://www.mathworks.com/help/signal/ref/decimate.html
Decimation reduces the original sample rate of a sequence to a lower rate. It is the opposite of interpolation. decimate lowpass filters the input to guard against aliasing and downsamples the result. The function uses decimation algorithms 8.2 and 8.3 from [1]. decimate creates a lowpass filter. The default is a Chebyshev Type I filter ...
AN-000111 - TDK
https://invensense.tdk.com/wp-content/uploads/2016/05/AN-000111-PDM-Decimation-v1.0.pdf
), defines the audio bandwidth that the decimated signal represents. This baseband sampling rate, at a frequency 2× the audio bandwidth, is typically 8 to 48 kHz, although certain applications may use higher frequencies. The decimation filter has a low-pass response with a steep roll -off at f s /2 and significant attenuation at higher ...
Decimation Filter - an overview | ScienceDirect Topics
https://www.sciencedirect.com/topics/engineering/decimation-filter
The output from the discrete-time analog integrator is converted using an m-bit ADC to produce the oversampled digital signal. Finally, the decimation filter removes outband quantization noise. Further decimation processes can change the oversampling rate back to the desired sampling rate for the output digital signal w(m).
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