DESCRIPTION

The AAC-LC (Advanced Audio Coding) is a natural audio coding algorithm that can handle 48 channels and sample rates up to 96kHz. This coding technique uses a perceptual filter bank, a sophisticated masking model, noise-shaping techniques, and channel coupling. It provides the highest possible quality at smaller bit-rates. AAC is an audio data compression format. The encoder/decoder is an implementation of the MPEG-2 (ISO/IEC 13818-3) and MPEG-4 (ISO/IEC 14496-3) standard. AAC provides both a higher quality and superior performance than MP3 at the same bit rate. It supports the coding of multi-channel audio, with up to 48 main channels and 16 low-frequency channels. AAC offers multiple profiles/object types to meet the requirements of a wide range of applications making it one of the most popular audio compression standards across wide spectrum of application ranging from portable player, cell phones, music systems, to the internet.

FEATURES

• Encoding and decoding of AAC-LC (Low Complexity) bit-streams
• MPEG4 AAC Low Complexity (LC) object type implementations supported
• MPEG2 AAC Low Complexity (LC) object type implementations supported
• Decoding of mono and stereo streams supported
• Mono, stereo, and dual mono input file supported
• RAW data input format supported
• C callable API for initialization, decoding
• Full accuracy with ISO/IEC 13818 and ISO/IEC 14496 audio standards
• Multi-channel, Reentrant implementation
• Tested on a variety of AAC bit streams
• 16/24 bit PCM output / High sound quality
• Optimized implementation
• Only AAC-LC output format supported
• eXpressDSP™ Digital Media compliant

AVAILABILITY

ADT MPEG4 AAC LC Encoder is available on the TMS320C6000™ DSP Platform

TI DM320™, TI C64x™ (TMS320C64x™), TI C64x+™/DaVinci™ (DM644x™)

ARM® Processor (ARM9E™, ARM11™ Series)

APPLICATIONS

• Digital Audio Broadcasting
• Portable Audio Systems
• Internet Streaming
• Internet Appliances
• Cell Phones