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A simple digital low-pass filter in C « Kirit Chatterjee
https://kiritchatterjee.wordpress.com/2014/11/10/a-simple-digital-low-pass-filter-in-c/#:~:text=The%20basic%20equation%20for%20a%20digital%20LPF%20is,is%20discrete%20outputs%20representing%20the%20last%20%E2%80%9Cn%E2%80%9D%20inputs.
Digital Audio Filter - NTHU
http://cv.cs.nthu.edu.tw/upload/courses/14/uploads/CS3570_Chapter5_part2.pdf
MPEG-1 Audio Compression - Step 2 •By applying a bank of filters, separate the signal into frequency bands. •The samples are divided into frequency bands for psychoacoustical analysis. Each filter removes all frequencies except for those in its designated band. •The use of filter banks is called subband coding. In MPEG-1, the number of filters is 32.
Digital Signal Processing Filtering Algorithm
https://www.theseus.fi/bitstream/handle/10024/91319/Chaguaro_Daniel.pdf?sequence=1
2.2 Digital Filters 4 2.2.1 FIR and IIR Digital Filters 6 2.3 Dealing with DSP in the Matlab world 9 2.3.1 Digital Filtering on Matlab 12 2.3.2 DSP Algorithm Implementation 22 2.4 Audio Equalization (EQ) 27 2.4.1 Types of Equalizers 29 2.4.2 Graphic Equalization 30 2.4.3 EQ Analogue vs. EQ Digital 31 3 Audio Equalization Using Matlab 33 4 ...
DIGITAL AUDIO EFFECTS - Stanford University
https://ccrma.stanford.edu/~orchi/Documents/DAFx.pdf
FILTERS • A high pass filter followed by a low-pass filter gives a band pass filter. • Centre Frequency Equation = ( 𝐿 𝐻) • Where, ƒ r is the resonant or centre frequency • ƒ L is the lower -3dB cut-off frequency point • ƒ H is the upper -3db cut-off frequency point
Introduction to Digital Filters - UC Santa Barbara
https://web.ece.ucsb.edu/~yoga/courses/DSP/P9_Intro_Digital_Filters.pdf
•A digital filter is a mathematical algorithm implemented in hardware and/or software that operates on a digital input signal to produce a digital output signal for the purpose of achieving a filtering objective. •Digital filters operate on digitized analog signals or just numbers, representing some variable, stored in a computer memory.
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