Nokia signs up to use aacPlus audio codec - Embedded.com

Nokia signs up to use aacPlus audio codec

NUREMBERG, Germany — Coding Technologies, a provider of audio compression for mobile, broadcasting and the Internet, has signed a licensing deal with Nokia. The agreement enables Nokia to incorporate Coding Technologies aacPlus audio codec in to future products.

The aacPlus audio compression scheme has already been adopted by mobile operators like SK Telecom, Vodafone and mmO2 for their mobile music services. It provides higher audio quality at lower bit rates.

MPEG-4 aacPlus is AAC coupled with Coding Technologies spectral band replication (SBR) and parametric stereo technologies. SBR is a bandwidth extension technique, which enables audio codecs to deliver the same quality at half the bit rate. Parametric Stereo increases the codec efficiency a second time for low-bit-rate stereo signals. Both SBR and Parametric Stereo are backward and forward compatible methods to enhance the efficiency of any audio codec.

AacPlus delivers streaming and downloadable 5.1 multichannel audio at 128Kbps, near CD-quality stereo at 32Kbps, good quality stereo at 24Kbps, and reasonable quality for mixed content below 16Kbps mono.

Founded in 1997 in Stockholm, Coding Technologies later merged with a spin-off of the Fraunhofer Institute in Germany, the inventor of MP3.

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