AAC Decoder by Allgo Systems

Audio and Voice Solutions

Product Description

Introduction

AAC stands for Advanced Audio Coding, a part of MPEG4 (ISO/IEC 14496-3) and MPEG2 (ISO/IEC 13818-3) standards published by ISO/IEC. AAC supports sampling frequency from 8 to 96 khz and bitrates up to 576 kbps.

AAC decoding process consists of the following steps:

• The bit-stream is parsed, huffman decoded and dequantized to get transform domain samples

• The samples are converted to time domain using Inverse Modified Discrete Cosine Transform (IMDCT

Salient Features

• MPEG4 AAC-LC (Low Complexity ) stereo decoder

• Fully compliant with ISO/IEC 14496-3

• Sampling rates: 8 to 96 khz

• Bit rates: Supports all the bit rate as per  ISO/IEC 14496-3

• Little endian

Benefits

• Low Mhz

• Supports raw, adts and adif file formats

• Built in Error handling to take care of corrupted bit-streams. Tested for various types of corrupted bit-streams

• Re-sync support for FF/Rwd (with ADTS header)

• Multi instance and re-entrant implementation

• Simple API interface

• Ported and tested on hardware platform with linux OS

Applications

• Portable audio players

• Streaming

• Mobile phones

• Gaming consoles

• Broadcast audio

AAC Decoder

Market Segment(s)

• Embedded
• Mobile

Target Platform(s)

• Android
• Linux

ARM Processor(s)

• ARM926EJ-S
• ARM1136J-S
• Cortex-A53
• Cortex-A57
• ARMv8

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