Design of a Digital Audio Equalizer for Automotive Applications

Bellini A, Tesauri M, Ugolotti E, Carpanoni E, Frassi G. Design of a Digital Audio Equalizer for Automotive Applications. In: AES Convention 112. Audio Engineering Society; 2002. Paper 5542. Available from: https://aes.org/publications/elibrary-page/?id=11412

@inproceedings{Bellini2002_11412,
  author = {Bellini, Alberto and Tesauri, Monica and Ugolotti, Emanuele and Carpanoni, Eraldo and Frassi, Giacomo},
  title = {{Design of a Digital Audio Equalizer for Automotive Applications}},
  booktitle = {AES Convention 112},
  note = {Paper 5542},
  year = {2002},
  month = apr,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=11412}
}

TY  - CPAPER
TI  - Design of a Digital Audio Equalizer for Automotive Applications
AU  - Bellini, Alberto
AU  - Tesauri, Monica
AU  - Ugolotti, Emanuele
AU  - Carpanoni, Eraldo
AU  - Frassi, Giacomo
T2  - AES Convention 112
M1  - Paper 5542
PY  - 2002
DA  - 2002/04/06
UR  - https://aes.org/publications/elibrary-page/?id=11412
PB  - Audio Engineering Society
LA  - en
AB  - The project delas with the design and realization of a dedicated board for the processing of audio signals for automotive applications, named DIGIcar. It features two stereo inputs (24 bit resolution) and two stereo outputs. The prototype was realized in a 4 layer PCB with SMD components. The DIGIcar board was tested stand-alone with an Audio Precision System 2022. Experiments were performed inside a car too, where the DIGIcar board was interfaced with a four channel power amplifier and connected between audio source and car loudspeakers. A development tool in MATLAB was exploited in order to synthesize the suitable equalizing filters, given standard acoustic car measurements. Then the filters are stored in the board FLASH EEPROM. A few options are available to tailor the equalizer for differen cars. Listening tests and acoustic measurements show the effectiveness and the functionality of the designed board.
ER  -