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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 …
µ-Law Compressed Sound Format
https://www.loc.gov/preservation/digital/formats/fdd/fdd000039.shtml
Full name [µ-Law (Mu-Law) telephony companding algorithm, from ITU-T G.711] Description: Standard companding algorithm used in digital communications systems in North America and Japan (telephones, for the most part) to optimize the dynamic range of an analog signal (generally a voice) for digitizing, i.e., to compress 16 bit LPCM (Linear Pulse Code …
c# - Using NAudio to decode mu-law audio - Stack Overflow
https://stackoverflow.com/questions/4234665/using-naudio-to-decode-mu-law-audio
Since you just have raw mu-law data, you can't use a WaveFileReader on it. Instead, create a new class that inherits from WaveStream. In its Read method, return data from tmpMemStream. As a WaveFormat return a mu-law WaveFormat.. Here's a generic helper class that you could use:
A-Law and mu-Law Companding Implementations …
https://www.ti.com/lit/an/spra163a/spra163a.pdf
A-Law and mu-Law Companding Implementations Using the TMS320C54x 9 Figure 1. Sample Speech Signal: GOAT Each phoneme class brings its own stress to the telephone system. In general, the peak to peak amplitude of voiced phonemes is approximately ten times that of unvoiced and plosive phonemes, as clearly illustrated in Figure 1. As a result, the
How To Make CCITT mu-law Files For Older IVR Systems Using ...
https://www.vo2gogo.com/how-to-make-ccitt-mu-law-files-for-older-ivr-systems-using-audacity/
Because the header in the audio file does not identify itself as a CCITT mu-law file, the IVR system may not recognize it. Send a test audio to your customer first to make sure it will import the unsigned audio file before converting your entire project. A! Reply. Jessica May 8, 2018 at 11:15 am # Thank you!!
A-law mu-law wav (8 bit, 8kHz G.711) - Apple Community
https://discussions.apple.com/thread/857796
I have final cut and I completed an audio project for a client. They requested MP3 (which I know how to compress) and a-law or mu-law wav (8 bit, 8kHz G.711). How to compress my project to a-law and mu-law wav files? I don't even know what the file …
YoungEngineering A-Law and Mu-Law Companding
http://young-engineering.com/docs/YoungEngineering_ALaw_and_MuLaw_Companding.pdf
A-Law/Mu-Law Companding Young Engineering: www.young-engineering.com Page 3 of 4 m-Law Compander The United States and Japan use µ-law companding. Limiting the linear sample values to 13 magnitude bits, the µ-law compression is …
AUDIO AND VOICE COMPRESSION - NCSU
http://reeves.csc.ncsu.edu/Classes/csc557/2001-fall/lectures/audio-compression.pdf
AUDIO AND VOICE COMPRESSION N. C. State University CSC557 ♦ Multimedia Computing and Networking Fall 2001 Lectures # 07&08. AUDIO AND VOICE COMPRESSION ... Mu-Law 8 8 bits 64 PCM G.711 200-3200 IMA-ADPCM 200-20000 ADPCM 8-44.1 4 bits 32-350 Bit Rate (Kb/s Sampling Precision Rate (KHz) Compressi on Method Frequency
G711.org - Telephony File Converter
Free online tool to convert MP3/WAV to G.711 u-law or a-law, G.722, or G.729 for BroadWorks, Asterisk, FreeSWITCH, CUCM, UCCX, and more! G711 File Converter This free tool will convert just about any DRM-free media file into audio that's compatible with most telephony vendors' Music on Hold and IVR Announcements.
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