Audio Content Recognition

DSP Hardware, DSP Software

C54xx C67xx DSP

MATLAB DSP, media gateway DSP, wireless DSP, PC/104 DSP

Audio Content Recognition Home :: System Integration :: Audio Content Recognition

Audio Content Recognition System

Audio Content Recognition System GUI, with waveform diagnostic display shown

Audio Content Recognition System GUI, with statistics view screen shown

Overview
Feature Summary

Overview

The Audio Content Recognition System performs automatic recognition of audio content from analog or digital file sources. Application examples include advertisement tracking and recording, music (song) recognition, and copyright monitoring. Content sources can be analog, for example radio or television inputs, digital, for example network, telephony, or high-speed serial connections, or file based formats such as WAV, MP3, etc.

The system is based on a high-performance DSP board installed in a PC; the DSP board serves as recognition engine and the PC provides a "host" GUI for operating the system and remote communication with other systems. If analog sources are used, then the DSP board is fitted with an audio input module that allows direct A/D conversion and data feed to the 'DSP farm' on the board, which allows efficient processing for multichannel systems.

Real-time operation is supported for up to 8 channels per DSP board when database size is limited. Non-real-time operation is supported with larger databases.

Feature Summary

High-Performance -- uses DSP Farm board to offload processing load from the PC to allow simultaneous multichannel processing

Content based algorithm - independent of filename, labeling, transmission format. Resistant to noise, watermarking, repeated MP3 or other compression, etc.

Real-time operation supported up to 8 channels per DSP board with active database limited to 512 items
Detection of content impairments including truncation, time compression/expansion (up to 3%), editing/excerpting, and others

Supports line-level analog inputs, balanced or single-ended, with software programmable input gain, output attenuation, and ac/dc coupling

Hypersignal is a registered trademark of Hyperception. Signalogic, DirectDSP, and DSPower are registered trademarks, and VDS, DirectRT, SigBook, Visual Bench, and Real-Time Convolver are trademarks of Signalogic. MATLAB is a registered trademark of The MathWorks. Telogy Networks is a registered trademark of Texas Instruments-Telogy. LabVIEW is a registered trademark of National Instruments. Windows and Visual Studio are trademarks of Microsoft.