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Topic: Mu-law algorithm

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Mu-law algorithm - Wikipedia, the free encyclopedia In telecommunication, a mu-law algorithm (μ-law) is a standard analog signal compression or companding algorithm, used in digital communications systems of the North American and Japanese digital hierarchies, to optimize (in other words, modify) the dynamic range of an audio analog signal prior to digitizing. The mu-law algorithm is also used in some rather standard programming language approaches for storing and creating sound (such as the sun.audio classes in java 1.1, in the.au format, and in some C# methods). It is similar to the A-law algorithm used in Europe. en.wikipedia.org /wiki/Mu-law   (236 words)

A-Law Compressed Sound Format A-Law is similar to the µ-Law (Mu-Law) algorithm used in North America and Japan. Standard companding algorithm used in European digital communications systems (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 Modulated) data down to 8 bits of logarithmic data. A-Law (or a-Law) is used in Europe and throughout the rest of the world. www.digitalpreservation.gov /formats/fdd/fdd000038.shtml   (412 words)

mu Mu is the name of a (hypothetical) vanished continent, located in the Pacific Ocean but now, like Atlantis and Lemuria, sunk beneath the waters. Mu is a letter in the Greek alphabet: lowercase μ, uppercase Μ. Mu (無) is a Japanese word meaning "null", "nothing", "emptiness", "vacuum", "void". www.fact-library.com /mu.html   (317 words)

AG-T1 and AG-E1 Installation and Developer's Manual P/N 6207-15 Another algorithm, mu-law, is used in North America and Japan. mu-law A companding algorithm used in T1 transmissions, primarily in North America and Japan. A-law A companding algorithm used in E1 transmissions, primarily in Europe. www.nmscommunications.com /manuals/6207-15/h-09.htm   (2102 words)

AG-24/30/48/60 Installation and Developer's Manual (6399-13): Glossary The other algorithm, mu-law, is used in North America and Japan. A-law is the other algorithm used in European networks. An algorithm for removing a portion of the received signal determined to be echo by comparison with the output signal. www.nmscommunications.com /manuals/6399-13/glossary.htm   (1835 words)

DSP Trick: Fast Floating-Point to mu-Law Conversion I present a C algorithm, which will not be fast, but should get the basic idea across. I believe this algorithm to be fully compliant. The Trick: The algorithm is performed in a few steps. www.dspguru.com /comp.dsp/tricks/alg/mu_law.htm   (340 words)

Definition: mu-law algorithm -law) algorithm: A standard analog signal compression algorithm, used in digital communications systems of the North American digital hierarchy, to optimize, i.e. This HTML version of Telecom Glossary 2K was last generated on Wed May 8 15:36:48 MDT 2002. www.its.bldrdoc.gov /projects/devglossary/_mu-law_algorithm.html   (104 words)

mu-Law - a Whatis.com definition Mu-Law is the standard codec (compression/decompression) algorithm for pulse code modulation (PCM) from the CCITT (Consultative Committee for International Telephone and Telegraph). The other type of codec algorithm, A-Law, is the standard used in Europe and elsewhere. Mu-Law is used in the United States and Japan. searchnetworking.techtarget.com /sDefinition/0,,sid7_gci848008,00.html   (146 words)

Java Sound, Compressing Audio with mu-Law Encoding The black and white algorithm might use fewer data bits to describe each sample than would be the case with the color algorithm, because there would be significantly fewer possibilities that would need to be described at each sample point for the black and white photograph. Although we haven't discussed the decoding algorithm yet, when this byte is decoded, it will return a 16-bit short value of 620 for an encoding/decoding error of about 1.8 percent. As another example of a lossless system, if a black and white photograph is scanned using a scanning algorithm that is designed to properly scan color photographs and to maintain information about millions of colors, the resulting file may contain redundant data bits. www.developer.com /java/other/article.php/3286861   (7320 words)

App Note Abstract: mu-Law Compression on the TMS320C54x This document discusses how to perform a software mu-law compression algorithm using the TMS320C54x. The algorithm requires a minimum number of instructions, and does not have the memory requirement needed for a lookup table. www.ti.com /sc/docs/psheets/abstract/apps/spra267.htm   (51 words)

Future of VoIP There are two main algorithms defined in the standard, mu-law algorithm (used in North America and Japan) and a-law algorithm (used in Europe and the rest of the world). G.729 is an audio data compression algorithm for voice that compresses voice audio in chunks of 10 milliseconds. The complexity of the algorithm is below 16 MIPS 2.2 kilobytes of RAM is needed for codebooks. www.futureofvoip.com   (1184 words)

Electronic Music Mailing List Archives: musicdsp - [music-dsp] A-Law Mu-Law Compression on adsp2186m Navigation: home » musicdsp » 2004 » 01 » [music-dsp] A-Law Mu-Law Compression on adsp2186m A-law and u-law encoding are relatively trivial and can be implemented using lookup tables. Previous Message: [music-dsp] $150 320vc33 DSK with 20-bit codec board is here elists.resynthesize.com /musicdsp/2004/01/851261   (316 words)

LAN Terminology And Components The Mu-Law algorithm is a standard PCM technique used in North American digital telecommunications systems to optimize the dynamic range of an analog signal prior to digital encoding. North America and Japan both use Mu-Law, while Europe uses a similar technique known as the A-Law algorithm. Mu-Law is based on the theory that a majority of voice signals are concentrated in the quieter range, so the number of steps in the PCM sampling scale should be concentrated there as well. edtech.utb.edu /6325/lessons/lesson10/20.htm   (220 words)

A-Law and mu-Law Vox Studio files in adpcm, wav, a-law or mu-law, pcm, cvsd computer telephony vo... App Note Abstract: mu-Law and A-Law Companding Using the TMS320C2xx DSP... App Note Abstract: TMS320C6000 u-Law and a-Law Companding with Software or the M... www.scienceoxygen.com /gadget/44.html   (329 words)

LearnThis.Info Encyclopedia articles beginning with 'Mu' M > Mu Listed below are all articles that begin with Mu. encyclopedia.learnthis.info /m/mu   (75 words)

Computer, Telephony and Electronics Glossary and Dictionary A programming and mathematical term, an algorithm is a procedure or formula for solving a problem. AES is an advanced encryption algorithm for securing sensitive but unclassified material by US Government agencies and, as a likely consequence, will probably evolve as the encryption standard for day to day commercial transactions in the private sector. In mathematics and computer science, an algorithm usually means a small programming procedure that solves a particular task or recurrent problem. www.csgnetwork.com /glossarya.html   (9096 words)

World History :: Encyclopedia Index -- Mu INDEX OF ARTICLES: Mu Articles are indexed by the first word of the title, including "A," "The," etc. World History :: Encyclopedia Index -- Mu Events Encyclopedia Localities Companies Surnames Shop www.worldhistory.com /wiki/Mu.htm   (124 words)

Computer, Telephony and Electronics Glossary and Dictionary Compression algorithm introduced by MPEG in 1991, the common goal of MPEG is compress 7.7 Meg down to about 150 Kbytes. Likely to be the leading compression algorithm for a range of video applications including video of demand. This is an industry organization whose goal is to develop standards and specifications for the encoding, transmission, and unencoding of video information over various media and network technologies. www.csgnetwork.com /glossarym.html   (7893 words)

law information systems - OneLook Dictionary Search Sorry, no dictionaries indexed in the selected category contain the phrase law information systems. You can look up the words in the phrase individually using these links: law information systems If you're sure it's a word, try doing a general web search for law information systems:   Google, AltaVista www.onelook.com /?w=law+information+systems   (90 words)

compand Compresses and expanding the dynamic range of a signal using a mu-law or or A-law algorithm. The mu-law compressor/expander for reducing the dynamic range, is used if the fourth argument of Neither converts from or to audio file ulaw format. octave.sourceforge.net /index/f/compand.html   (75 words)

Vox Studio formats: ADPCM, A-law or Mu-law, WAV, VOX, CVSD, PCM computer telephony formats. Vox Studio by Xentec supports Dialogic, NMS, OKI, Nortel, Centigram, NewVoice, InterVoice, Voicetek, Aspect, Rockwell CTI systems and more. Vox Studio formats: ADPCM, A-law or Mu-law, WAV, VOX, CVSD, PCM computer telephony formats. If you think we should support yet another telephony file format, let us know what your requirements are at www.xentec.be /products/vox_studio/formats/formats.htm   (130 words)

13 - Multimedia The mu-law and A-law algorithms are especially useful when digitizing speech signals, because they achieve a greater coding efficiency. Here I'm using nonuniform quantizing with the mu-law algorithm, with one channel, a sampling rate of 8000 Hz and using 8 bits per sample. This means that the quality of the sampled speech will be better for a given number of bits per sample, or less bits will be required for a given quality. www.tr.openbsd.org /faq/faq13.html   (6054 words)

Xentec NV, home of Vox Studio. Create voice files in ADPCM, A-law or Mu-law, WAV, CVSD and PCM telephony formats for Dialogic, NMS, OKI, InterVoice, Nortel, Centigram, Voicetek, Aspect, Rockwell CTI. Create voice files in ADPCM, A-law or Mu-law, WAV, CVSD and PCM telephony formats for Dialogic, NMS, OKI, InterVoice, Nortel, Centigram, Voicetek, Aspect, Rockwell CTI. Create voice recordings in ADPCM, A-law, Mu-law computer telephony file formats for www.xentec.be   (77 words)

Articles - Bit/Mu-law algorithm We don't have an article called "Bit/Mu-law algorithm" www.mafox.com /articles/Bit/Mu-law_algorithm   (54 words)

Vox files from wav for computer telephony They can contain voice data in ADPCM compression or raw PCM or even be coded using the a-law or mu-law companding algorithm. The content of a vox file can also be either a single prompt or a whole series of voice prompts. In reality, vox files can be stored in many different formats. www.xentec.be /bots/vox/avvxfil/avvxfil.html   (236 words)

Index of the Topics: Mu Index of the Topics: Mu List of the Search Terms for "Mu" Please, scrolling down around itself all entries indicate permit. www.indexsuche.com /Mu.htm   (21 words)

convert mu-law to PCM Do you know of an algorithm that i can use to achieve this? I wish to convert this data to a PCM format, storing it in a byte array also. Some code or links would be helpful too. saloon.javaranch.com /34/004335.html   (89 words)

Mu-law algorithm - Definition of Mu-law algorithm by Webster's Online Dictionary Mu-law algorithm - Definition of Mu-law algorithm by Webster's Online Dictionary www.webster-dictionary.org /definition/Mu-law%20algorithm   (21 words)

Installing the D/41ESC and the CP4/SC in SC mode Typically for a system running in the United States or Canada, the audio digital encoding algorithm of choice is Mu-law. To change the CP4/SC to Mu-law or A-law, change switch five on the six switch switch bank (SW1) on the SC daughter card or use the writefpga setting. The voice files for the D/41ESC should therefore be in A-law if the system is in A-law, and Mu-law if the board is in Mu-law. resource.intel.com /telecom/support/Gammalink/Install/735   (1074 words)

Distinguishing received A-law and .mu.-law signals in a PCM modem - Patent 6181737 According to a third aspect of the invention, whether the incoming signal is coded according to A-law or according to.mu.-law is determined by calculating the value of an A-law/.mu.-law separation function, and then comparing the value of the function to a predetermined threshold. According to a fourth aspect of the invention, a method for choosing a final scaling factor Scf for A-law and/or linear.mu.-law channels includes calculating a PAD estimation function and comparing the value of the calculated PAD estimation function to a series of thresholds to determine whether or not the PAD is <6 dB. The sum is compared to a threshold, as the sum will be small for A-law values and large for.mu.-law values. www.freepatentsonline.com /6181737.html   (11414 words)

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