AES E-Library

Different Approaches for the Equalization of Automotive Sound Systems

The paper discusses various possible DSP algorithms employable on low-cost platform suitable for mass series production ot automotive sound systems. The analysis takes into account traditional IIR and FIR filtering schemes, dual-rate and hybrid approaches, and new algorithms such as Warped FIR (WFIR) or frequency-domain partitioned convolution (BruteFIR). The comparison does not limits to the implementation, cost and performance of different processing schemes, but also to the hot problem of computing the optimal filtering coefficients for each of these schemes starting from measurements taken inside the car cockpit, making use of examples taken from the real life. The results show that both IIR and FIR structures are capable of good results on low-cost DSP systems; the more advanced algorithms will probably become competitive as soon as a new generation of floating-point DSP processors will also be available for low-cost applications.

Authors: Farina, Angelo; Bellini, Alberto; Romagnoli, Marco
Affiliations: Industrial Eng. Dept., Università di Parma, Parma, Italy ; Information Eng. Dept., Università di Parma, Parma, Italy ; ASK Automotive Industries, Reggio Emilia, Italy(See document for exact affiliation information.)
AES Convention:112 (April 2002) Paper Number:5541 Import into BibTeX
Subject:Automotive Audio

Click to purchase paper or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!

This paper costs $20 for non-members, $5 for AES members and is free for E-Library subscribers.

Learn more about the AES E-Library

E-Library Location: (CD aes19)   /pp2002/pp0205/000094.pdf

Start a discussion about this paper!