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AN176 Compandor cookbook - Experimentalists Anonymous
http://experimentalistsanonymous.com/diy/Datasheets/Compandor%20cookbook.pdf
Compandor cookbook AN176 1997 Aug 20 10–2 Compandors are versatile, low cost, dual-channel gain control devices for audio frequencies. They are used in tape decks, cordless telephones, and wireless microphones performing noise reduction. Electronic organs, modems and mobile telephone equipment use compandors for signal level control. So what is …
The Noise Generator Cookbook on Apple Books
https://books.apple.com/us/book/the-noise-generator-cookbook/id473277643
The Noise Generator Cookbook ... They're ideally suited for analog synthesizers, electronic percussion, audio testing and more. The real secrets are revealed once and for all in an easy to understand form. You'll find both analog and digital approaches, methods to add voltage control for incredible sonic sweeps, a little-known technique that ...
5.3.8 Algorithms for Audio Companding and …
http://digitalsoundandmusic.com/5-3-8-algorithms-for-audio-companding-and-compression/
5.3.8.1 Mu-law Encoding. Mu-law encoding (also denoted μ-law) is a nonlinear companding method used in telecommunications.Companding is a method of compressing a digital signal by reducing the bit depth before it is transmitted and then expanding it when it is received. The advantage of mu-law encoding is that it preserves some of the dynamic range that would be …
Noise Reduction with Companders – Electric Druid
https://electricdruid.net/noise-reduction-with-companders/
“Compander” is a compound of “Compressor” and “Expander”, since those are the two parts of that process. The compressor is the part that makes quiet signals louder (“compresses the dynamic range” in the jargon) and then the expander reverses the process and makes them quiet again (expands the dynamic range).
Companding
https://dspguide.com/ch22/5.htm
Companding is a common technique for reducing the data rate of audio signals by making the quantization levels unequal. As previously mentioned, the loudest sound that can be tolerated (120 dB SPL) is about one-million times the amplitude of the weakest sound that can be detected (0 dB SPL). However, the ear cannot distinguish between sounds ...
Expander Compressor Unit Circuit | Compander - Engineering ...
https://bestengineeringprojects.com/compressorexpander-unit-compander/
Expander Compressor Unit Circuit | Compander. October 17, 2013. September 14, 2018. Engineeering Projects. The compression and expansion are two important techniques used by audio engineers during recording and reproduction of program material. The compression of dynamic range of program material (records, speech or musical broadcasting ...
NE/SA572 - ModularSynthesis
https://modularsynthesis.com/loft/450/NE572.pdf
in the audio spectrum (10Hz-20kHz). The output current IO must feed the virtual ground input of an operational amplifier with a resistor from output to inverting input. The non-inverting input of the operational amplifier has to be biased at V REF if the output current IO is DC coupled. Rectifier The rectifier is a full-wave design as shown in ...
Satin: Tape simulation | u-he
https://u-he.com/products/satin/
Compander tricks. Some noise-reduction systems were often mis-used by running the audio through the encoder circuit only, omitting decoding. Especially the A-Type systems gained popularity because they could add some pleasantly ‘airy’ compression.
TV Audio Project | All About Circuits
https://forum.allaboutcircuits.com/threads/tv-audio-project.17399/
An NE570, NE571 and NE572 are audio expander/compressor/limiter ICs. Philips has an Audio Compander Cookbook on their site with all the details. I have a Toshiba TV with an audio compressor setting. It makes all loud sounds the same volume and the first sounds of each syllable sound like they hit your ears with a hammer.
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