Sampling Rate: The MPEG4 MP3 Decoder supports sampling frequency from 8kHz to 48 kHz as specified by the standard.

Bit Rate: The MPEG4 MP3 Decoder supports all bit rates as specified by the standard.

DESCRIPTION

The Adaptive Digital Technologies MP3 Decoder is fully compliant with ISO/IEC 11172-3 (MPEG1 layer 3), ISO/IEC 13818-3.2 (MPEG2 audio) and MPEG2.5 standards as specified by ISO/IEC-11172-4 standard. The MP3 decoder converts audio data in compressed format to uncompressed format. It supports sampling frequencies from 8 kHz to 48 kHz and all bit-rates specified by the standard.

FEATURES

• Supports VBR (variable bit rate) and CBR (constant bit rate) modes.
• Supports all stereo modes (stereo/joint stereo/dual channel/single channel).
• Fully compliant with ISO/IEC 11172-3, ISO/IEC 13818-3.2 (MPEG2 audio) and MPEG2.5 standards.
• Compliant with XDAIS specification.
• Supports all mode extensions for joint stereo.

AVAILABILITY

ADT MP3 Decoder is available on the TMS320C5000™ DSP Platform

C55x™DSP Generation

SPECIFICATIONS

• MPEG3 C55x

CYCLES INFORMATION –Profiled on TMS320C5510

Configuration	Test File Parameters	MIPS(MAX)	MIPS(AVG)
MP3_DEC_ Low MIP	64kbps_320 kbps	18.19	16.22
MP3_DEC_ Low MEM	64kbps_320 kbps	20.67	18.74

MEMORY STATISTICS

All Memory usage is given in units of kilobytes.

Configuration	Program Memery	Constants	Scratch	Instance
MP3_DEC_ Low MIP	18.75	13.70	9.00	9.49
MP3_DEC_ Low MEM	14.36	14.38	4.5	9.49

API FUNCTIONS

DECODE_create(…) creates an instance of the DECODE algorithm and returns a handle to the object.

DECODE_decode(…) processes the calls to the decoder.

DECODE_delete(…) deletes the instance of the dynamically created object referenced to by the handle