Renesas Creates aacPlus Decoding Middleware for SH-Mobile Processor
11/8/2004 - Renesas Technology Europe announced the "aacPlus Decoding Middleware," software for the SH-Mobile application processor that supports the aacPlus audio coding technology. The middleware simplifies the development of multimedia applications, such as high quality music distribution services, for next-generation mobile phones that use aacPlus and the SH-Mobile device. It also includes optimised algorithms that allow the device's on-chip DSP to be used to its full potential, enabling high-performance applications to be developed.
aacPlus is a highly efficient coding technology that combines MPEG AAC (Advanced Audio Coding) and the SBR® (Spectral Band Replication) technology developed by Coding Technologies. aacPlus offers twice the coding efficiency of the conventional MPEG-2 AAC LC method, enabling data of the same quality to be achieved at approximately half the data transfer speed. This makes it possible to achieve higher sound quality at limited data transfer speeds on communication lines and to halve the data transfer speed required to maintain the same sound quality as before.
The aacPlus Decoding Middleware complies with the MPEG-4 High Efficiency AAC Profile standard and implements SBR technology. The middleware provides a C-language function interface that, when incorporated into a program, simplifies the development of aacPlus applications and improves development efficiency. The interface is equivalent to Renesas Technology's current MP3 and MPEG-4 AAC middleware, facilitating the development of multi-codec type applications that allow switching between different audio coding methods.
With applications that use aacPlus for video distribution services including audio, the aacPlus Decoding Middleware can be easily combined with Renesas Technology's MPEG-4, H.264, or similar moving image middleware. This provides development solutions for a wide-range of multimedia applications.
The aacPlus Decoding Middleware will be available from 20 November 2004.
aacPlus is a trademark of Coding Technologies.
SuperH is a trademark of Renesas Technology Corp.
SBR is a registered trademark of Coding Technologies.
Specifications
- Applicable device: SH-Mobile
- Supported OS: µITRON*1
- Supported standard: International standard ISO/IEC14496-3: 2001/Amd 1: 2003 compliant
- Function: Digital audio decoding (expansion)
- Sampling rate: Up to 48 KHz (using SBR)
- Bit rate: Up to 96K bits/sec (using SBR)
Note: 1. ITRON: Industrial TRON. TRON is an abbreviation of "The Real-time Operating System Nucleus."
About Renesas Technology Corp.
Renesas Technology Corp. designs and manufactures highly integrated semiconductor system solutions for mobile, automotive and PC and Audio Visual markets. Established on April 1, 2003 as a joint venture between Hitachi, Ltd. (TSE:6501, NYSE:HIT) and Mitsubishi Electric Corporation (TSE:6503) and headquartered in Tokyo, Japan, Renesas Technology is one of the largest semiconductor companies in the world and the number one microcontroller supplier globally. Besides microcontrollers, Renesas Technology offers system-on-chip devices, Smart Card ICs, mixed-signal products, flash memories, SRAMs and more. www.renesas.com
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