companding

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companding

(1) In the analog world, a method for improving audio reproduction by altering the dynamic range of the signals. On outgoing transmission, it raises the amplitude of weak signals and lowers the amplitude of strong signals. On incoming transmission, it restores the signal to its original form. Such techniques are used in dbx and Dolby noise reduction, AM, FM and SSB radio as well as in voice and musical instrument amplification to reduce feedback. See codec.

(2) In the digital world, a compression technique used in pulse code modulation (PCM). It reduces the number of bits used to represent digital voice samples in the loudest parts of the conversation. See mu-Law, A-Law and codec.

companding [kəm′pand·iŋ]

(electronics)

A process in which compression is followed by expansion; often used for noise reduction in equipment, in which case compression is applied before noise exposure and expansion after exposure.

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No references found			The EIA's proposal is in accordance with the earlier unanimous vote by the association's Broadcast Television Systems Committee, which recommended dbx Incorporated's companding (noise-reduction) system in conjunction with Zenith's transmission system. Television Stereo Sound System Chosen by EIA Submitted to FCC by Communications News A-law and micron-law companding are fully supported. Wolfson Stereo CODEC Expands Audio Applications for Mobile Phones and ... by Business Wire A successive approximation register-based A/D converter can be combined with an on-board look-up table to provide advanced analog functions including sensor response linearization, arbitrary waveform synthesis, signal-dependent functions, analog multiplication, and signal companding. New Anadigm Field Programmable Analog Array Takes Aim at High-Volume ... by Business Wire			compact support compact tape compact-disk erasable compact-disk read-only memory compact-disk recordable compact-disk rewritable compact-disk write-once compact-open topology Compactata compacted volume compacted yards CompactFlash CompactFlash Association compactification compacting factor compacting files compacting garbage collection compaction compaction pile compactness preserving Compactor CompactPCI CompactTCA compactum companded single-sideband system companding compandor companies, chartered companion companion body companion cell Companion Cropping companion flange Companions of the Prophet companionway Company company town company union Company Unions Companyland Companys Jover, Luis Companys Jover, Luís Companys, Lluís Compaoré, Blaise Compaq Compaq Computer Corporation compar Comparability comparable functions Comparable Output comparable pair			Compagnie Tunisienne de Forage Compagnie Tunisienne de Navigation Compagnie Vinicole de Bourgogne Compagnie Vinicole des Rivesaltes Compagnie Vosgienne d'Isolation Compagnons Bâtisseurs Bretagne Compagnons de Travaux Électriques Compagnons des Jours Heureux Compagnons des Tortues et Autres Reptiles de Guyenne Compagnons du Bâtiment de France Compagnons Fontainiers Rwandais Compagnons Menuisiers et Techniciens du Bois Companable Companator compand Companded Companded Delta Modulation Companded Predictive Delta Modulation Companded Single Sideband Companded Single Sideband Amplitude Modulation companded single-sideband system Compander Compander Compander Compander Combiner Interface companders companding Compandor Compandor Compandor Compandored Analog Carrier compandors Compañerismo Bautista Bíblico de México Companhia Companhia Angolana de Agricultura Companhia Brasileira de Cartuchos Companhia Brasileira de Liquidacao e Custodia Companhia Brasileira de Offshore Companhia Carris de Ferro de Lisboa Companhia Colonial de Navegação Companhia de Aços Especiais Itabira Companhia de Armazéns e Silos do Estado de Minas Gerais Companhia de Bebidas das Americas Companhia de Concessoes Rodoviárias Companhia de Dança Paula Marques Companhia de Desenvolvimento do Vale do São Francisco Companhia de Eletricidade do Estado de São Paulo Companhia de Engenharia de Tráfego Companhia de Gás de Minas Gerais Companhia de Gás de São Paulo Companhia de Pesquisa de Recursos Minerais Companhia de Processamento de Dados do Estado de São Paulo Companhia de Saneamento Básico do Estado de São Paulo

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