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aacPlus delivers superior quality at a fraction of the bit rate compared to Layer 3, and is optimized for excellent reproduction of both voice and music. Listen to the audio files in the demo below to hear for yourself why aacPlus has been called "the best low-bit rate codec on Earth." Bit rates were chosen to showcase results at common POTS connection speeds. Samples below are in standard (non-streaming) WAV format and are in excess of 5Mb each; a broadband connection is recommended.
With audio this good, it's no wonder Telos chose aacPlus for Zephyr Xport, the new POTS+ISDN portable remote codec that's getting rave reviews from users. aacPlus (also known as "High Efficiency MPEG AAC") melds Spectral Band Replication with MPEG AAC, resulting in truly stunning audio fidelity at bit rates never thought possible before. In tests conducted by the European Broadcasting Union (EBU) comparing a variety of codecs at several bit rates, they declared aacPlus as the clear winner, significantly outperforming proprietary competitors and improving over other standards; studies conducted by DRM and MPEG confirmed that aacPlus is ideally suited for low bit rates. aacPlus has been chosen for use by XM Satellite Radio and Digital Radio Mondiale, will soon be in 2.4G and 3G audio applications deployed by Matsushita and NEC, and has been implemented in the latest version of Ahead Software's Nero CD-R software.
Telos puts the power of aacPlus to work for you in Zephyr Xport - the portable POTS+ISDN transceiver that works with the industry-standard Zephyr Xstream to provide sparking 15 kHz audio and rock-solid connections over a standard analog phone line - and Low Delay MPEG AAC when ISDN is available.
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