audio codec

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audio codec

(1) (audio enCOder/DECoder) Software that compresses and decompresses a digital audio signal. MP3, Windows Media Audio (WMA), Dolby Digital and DTS are examples of popular codecs that compress and decompress digital audio. The audio codec may also be a hardware circuit. See codec examples, codec, Windows Media formats, QuickTime, audio compression, perceptual audio coding and G. standards.

(2) (audio enCOder/DECoder) A hardware circuit that converts sound waves into PCM digital code and vice versa. The term may refer to only the A/D and D/A conversion, or it may include the compression technique for further reducing the signal (definition #1 above). If the codec is specialized for human voice, it is known as a "speech codec," "voice codec" or "vocoder" (see speech codec). See sampling and codec.

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The adaptive audio signal of G.722 audio codec is then fed to AAC audio codec which consists of encoder and decoder.

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HE-AAC Multichannel is the only native surround audio codec in Android and enables the playback of high-quality 5.1 surround content on Android 4.1 phones and tablets connected via HDMI to a home theater system.

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VLSI Solution announced the VS1063 audio codec chip.

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HE-AAC is the mandatory audio codec in DASH-AVC/264, the only native multichannel codec in Android and has been deployed in over 5 Billion CE devices.