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.
References in periodicals archive ?
TechNavio's analysts forecast the Global Smartphone Audio Codecs market to grow at a CAGR of 40.
DENVER -- Fraunhofer IIS, a reliable supplier of ready-to-run-software with more than 20 years of experience in the development and implementation of MPEG audio codecs, announced today that they will introduce a broad range of MPEG audio codecs, such as MPEG-4 HE-AAC v2 and MPEG Surround, suitable for Android-based mobile phones at the 2010 Mobile World Congress (Barcelona, February, 15-18).
MetaSound audio codecs provides developers and application integrators
NASDAQ:IDTI), a leading provider of essential mixed signal semiconductor solutions that enrich the digital media experience, today announced a new family of Power Smart audio codecs that are designed to serve the audio needs of today's business and consumer desktops.
ICS expects to license WaveFront VS to manufacturers of computers with audio codecs and to manufacturers of low-end PC sound cards.
The multi-channel audio system and quality evaluation test carried out by EBU is a stringent, independently run blind listening test which compares the audio quality and performance of audio codecs across the market place.
Wavedec is half the price and footprint of competitive audio codecs while it matches today's high volume consumer demand for computer audio capability.
263 and G729 video and audio codecs and will be able to utilize the H.
Sandra Perry, product line manager, PC audio codecs, Analog Devices adds, "With SRS solutions for Vista, we can now offer our customers audio quality tuning and customization features along with the ability to enable virtual surround sound, extending the home theater experience to the PC.
Until now, the major barrier to broadcasters implementing the latest advanced, high efficiency multi-channel audio codecs for MPEG-4 based HDTV broadcasts has been the lack of any means for consumers to decode the surround sound in the home.
The CS42L52 builds upon the innovative design techniques of Cirrus Logic's recently introduced low-power audio codecs by creating its own on-chip negative power supply voltage.
264 for screen sizes up to QVGA; stereo audio codecs including MP3, AAC+, WMA and others; and it offers 128-voice MIDI ringtones - all handled in software.