MPEG 1, 2 Audio (MP3) Encoder and Decoder

The Ittiam MP3 codec is an implementation of the MPEG-1 (ISO/IEC 11172-3) and MPEG-2 (ISO/IEC 13818-3) standards. ISO/IEC 11172-3 (MPEG 1) is a standard for compressing/decompressing two channels of audio sampled at 32, 44.1 or 48Khz at bit-rates from 32 to 384kbit/s. Three layers (layer 1,2,3) are supported based on the complexity, compression and quality. Layer III offers the highest compression for a given audio fidelity but requires the highest complexity.

The Ittiam MP3 codec implementation supports all three audio layers of ISO/IEC 11172-3 3 and ISO/IEC 13818-3

MP3 Decoder Technical Specification

• Supports decoding of Layer 1, 2, 3 of MPEG-1 ISO/IEC 11172-3 and ISO/IEC 13818-3 standards
• C callable API for initialization, decoding of all three layers
• Full accuracy with ISO/IEC 11172-3 and ISO/IEC 13818-3 audio standards
• Multi-channel, Reentrant implementation
• Tested on a variety of MP3 bit streams
• 24 bit PCM output / High sound quality
• Optimized implementation

MP3 Encoder Technical Specification

• Supports encoding of audio to Layer 3 bit stream (MPEG-1 ISO/IEC 11172-3 and ISO/IEC 13818-3 standards)
• C callable API for initialization, encoding
• Multi-channel, Reentrant implementation
• Sampling rate 16-48 kHz
• Bit rates: 8 - 320 kbps
• Quality, Complexity selectable through the interface (C API)
• High sound quality
• Optimized implementation

Applications

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

Platforms

• Currently supported on ARM (ARM9E™, ARM11™), TI DM320™, TI C64x™ (TMS320C64xx™), TI C64+™/DaVinci™ (DM644x™)
• For further details contact mkt@ittiam.com