Notes
Outline
Different approaches for the equalization of automotive sound systems
Angelo Farina, Alberto Bellini, Marco Romagnoli
Outline
4 analog audio-in, 4 analog audio-out system with car-audio quality;
4 separate channels digital processing;
Comparison between different equalization algorithms;
Hardware implementation on a 16 bit fixed-point DSP platform;
Filter software synthesis with a dedicated Java desktop; application: DIGItools;
Software implementation of different equalization algorithms;
Experimental results;
Hardware platform adopted
Hardware platform adopted
DSP Algorithms for
automotive sound systems
DSP Algorithms for
Automotive sound systems
FIR filters:
Dual-Rate FIR filter
Warped FIR filters:
Select-Save and BruteFIR filters:
Design Flow
Software tools: DIGItools
Software tools: IIR filter synthesis
Software tools: FIR filter synthesis
Car acoustic measurements
Aurora GUI
Experimental set-up
Delay Introduction
FIR experimental results
FIR experimental results
FIR experimental results
IIR experimental results
IIR experimental results
Listening tests
Conclusions
Multi-channel digital filters equalization;
Automatic design of digital filters with the software DIGItools;
Implementation on DSP systems;
Experimental results and listening tests;