aacPlus Streaming Media
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aacPlus is aAn enhanced AAC format from Coding Technologies that delivers near CD-quality sound in as little as 32 Kbps. aacPlus Version 1 uses Spectral Band Replication (SBR), a proprietary Coding Technologies' technique that halves the sampling rate, but encodes the missing higher frequencies at a rate of 1.5 Kbps and stores them in the auxiliary data fields of the MPEG format. SBR is also used in the mp3PRO format.
aacPlus Version 2 adds Parametric Stereo (PS), which works in a similar fashion to SBR. It encodes the differences between left and right channels as a 3 Kbps data stream that it sends along with the monaural representation of the channels.
Spectral Band Replication (SBR)
SBR encodes the high frequencies and stores them in the auxiliary data fields. The decoder restores the high frequencies from the SBR data.
Parametric Stereo (PS)
Parametric Stereo combines the left and right channels into a monaural signal and encodes the differences between channels as parametric data at a bit rate up to 3Kbps. The decoder turns the monaural stream back into stereo from the parametric data.
Supported Platforms for Encoders:
Win32, Linux, MacOS X, TI, Motorola, other DSPs.
Supported Platform for Decoders:
Win32, Linux, MacOS X, ARM, TI, NEC, STMicroelectronics, Trimedia, other DSPs.
Where do I purchase an Orban Encoder?
Encoders from Orban are available for purchase directly through Biondo Communications. Contact us for pricing and availability .
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To learn more about how we can assist your organization with your next aacPlus streaming media project please contact us for a free consultation.
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