DDEX Data Dictionary, 12-07-19

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Intro

AudioCodec

A supporting term for the messages.

An algorithm to compress and uncompress an AudioResource for storage and/or transmission.

Relationships
Parents	Codec	An algorithm to compress and uncompress a Resource for storage and/or transmission.
Children	AAC	Advanced Audio Coding as standardized in ISO/IEC 13817-7.
	ADPCM	Adaptive Differential PCM audio as defined in ITU G.721, 726 and 727.
	ALaw	An AudioCodec to optimize, i.e. modify, the dynamic range of an analogue signal for digitizing, mostly used in Europe.
	AMR-NB	Adaptive Multi-Rate Narrowband.
	AMR-WB	Adaptive Multi-Rate Wideband.
	FLAC	Free Lossless Audio Codec developed by the Xiph.Org Foundation..
	MP2	MPEG Audio Layer II, as standardized in ISO/IEC 11172-3 and 13818-3.
	MP3	MPEG Audio Layer III, as standardized in ISO/IEC 11172-3 and 13818-3.
	MuLaw	An AudioCodec to optimize, i.e. modify, the dynamic range of an analogue signal for digitizing, mostly used in North America and Japan.
	PCM	Pulse-code modulated audio as used e.g. on audio CDs.
	PDM	Pulse-Density Modulation, a form of modulation used to represent an analog signal with digital data. Direct-Stream Digital (DSD) is the trademark name used by Sony and Philips for PDM.
	QCELP	Qualcomm Code Excited Linear Prediction as developed by Qualcomm.
	RealAudio	Real Audio as developed by RealNetworks Inc.
	Shockwave	Shockwave as developed by Macromedia Inc.
	Vorbis	An AudioCodec developed by the Xiph.Org Foundation.
	WMA	Windows Media Audio as developed by Microsoft Corp.

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