(redirected from eAAC+)


An enhanced AAC format from Coding Technologies (www.codingtechnologies.com) that extends Low Complexity AAC (AAC LC) to deliver near CD-quality sound in as little as 32 Kbps. Also known as "High Efficiency AAC" (HE-AAC).

Version 1 - AAC+ (HE-AAC v1)
Using Spectral Band Replication (SBR), AAC+ is a proprietary 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 (see mp3PRO).

Version 2 - eAAC+ (HE-AAC v2)
Used for stereo signals, eAAC+ supports Parametric Stereo (PS), which works similar to SBR. PS 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. See AAC and MP3.

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.
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The phone's built-in RealPlayer player supports MP3, AAC, eAAC+, AAC+, WMA, WAV and other audio formats, as well as WMV9, MPEG4, CIF, and 3GP video formats.
Capacity based on using optional 2Gb microSD card, 3:45 per song and 48kbps eAAC+ (M4A) encoding on the Nokia Music Manager.
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Capacity based on 3 minutes, 45 seconds per song with 48 Kbps eAAC+ (M4A) encoding on the Nokia Music Manager.
Digital music player (supports AAC, eAAC+, MP3 and Windows Media Audio formats)
264 15 fps QCIF - Audio playback: MP3, AAC, AAC+, eAAC+, WMA ST-NXP Wireless
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1) Assumes eAAC+ encoded files Facts and features may vary depending on local variant.
4) Capacity based on 3:45 minutes per song in eAAC+ format at a data rate of 48kbps.
For maximum music enjoyment, a wide variety of music file formats, including MP3, AAC, eAAC+ and WMA, are supported by the Nokia 6263, as are the DRM-protected Windows Media(R) music files that are available from most online music stores on the Internet.