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AES E-Library » Strategies for Switching Digital Audio Filters
https://www.aes.org/e-lib/browse.cfm?elib=6518
In any audio application, the switching of digital filters can cause severe problems. In this paper, strategies are presented that avoid disturbing acoustic effects as well as the occurrence of instability. It is shown that the proposed strategies can be generalized for all kinds of filters. Results of an implementation are given under both heuristic and theoretical aspects.
Filters, Part 1: Analog, switched, and digital filters FAQ
https://www.analogictips.com/filters-part-1-analog-switched-digital-filters/
Filters, Part 1: Analog, switched, and digital filters. Filters are essential functions in most circuits and systems; as frequencies extend into the multi-GHz range, surface acoustic wave (SAW) and bulk acoustic wave (BAW) filters are needed to meet the design objectives. An engineer I worked with (and whose name I have forgotten) once remarked ...
Listening Comparison Of Digital Audio Filters
http://www.jeffchan.com/audio/filter-comparison.html
Switching back to a comparison of the older filters, a few audio writers have expressed a preference for the DF1704 over the PMD-100. I would describe the DF1704 as harder and more "hi-fi" than the PMD-100, which to my ears sounds far more natural. The brain is marvelously adaptive; it's what makes humans survive and thrive.
Digital Audio Filter - National Tsing Hua University
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 Audio Selector Switch Circuit » CircuitsZone.com
https://circuitszone.com/digital-audio-selector-switch-circuit/
Digital Audio Selector Switch Circuit Diagram. As shown in the circuit diagram, the ten input signals numbered 1-10 are applied to the bases of transistors T1-T10 via capacitors C1-C10 respectively. The bias voltages for the transistors are obtained with the aid of R1-R10. Depending on the binary state applied to IC1, one of its outputs Q0-Q9 ...
Filtering Techniques: Isolating Analog and Digital …
https://www.ti.com/lit/an/scaa048/scaa048.pdf
Filtering Techniques: Isolating Analog and Digital Power Supplies in TI’s PLL-Based CDC Devices 5 Ferrite Beads Clock drivers typically produce switching noise. There is a need to isolate this noise component and prevent it from spreading into the PCB board. Inserting a ferrite bead between the clock
Designing Second Stage Output Filters for Switching …
https://www.analog.com/en/technical-articles/designing-second-stage-output-filters-for-switching-power-supplies.html
Design Process for an RC Second Stage Output Filter. Step 1: Choose C 1 based on assuming the value output ripple at C 1 is approximately ignoring the rest of the filter; 5 mV p-p to 20 mV p-p is a good place to start. C 1 can then be calculated using Equation 1. Step 2: R can be chosen based on power dissipation.
DESIGN AND IMPLEMENTATION OF A PARAMETRIC …
https://marquetem.files.wordpress.com/2017/09/design-and-implementation-of-a-parametric-equalizer-using-iir-and-fir-filters-1.pdf
properties of the audio signal. The implementation of a parametric equalizer will be carried out in the digital world, by the reason of the advantages of digital filtering over analogue, such as the implementation of high order filters or filtering with an arbitrary frequency design, both impossible in the analogue world.
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