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Scheda Riassuntiva
Anno Accademico 2014/2015
Tipo incarico Dottorato
Insegnamento 092088 - ACTIVE NOISE CONTROL
Docente Piroddi Luigi
Cfu 5.00 Tipo insegnamento Monodisciplinare

Corso di Dottorato Da (compreso) A (escluso) Insegnamento
MI (1380) - INGEGNERIA DELL'INFORMAZIONE / INFORMATION TECHNOLOGYAZZZZ092088 - ACTIVE NOISE CONTROL

Programma dettagliato e risultati di apprendimento attesi

Objectives
The course presents the fundamental elements related to the active control of acoustic noise, with the final aim of providing students with the conceptual and methodological tools in the design of active control systems. For this purpose, adaptive digital filtering algorithms and disturbance rejection methods are introduced. Both broadband and narrowband active noise control methods are presented, using feedforward and feedback, single and multi-channel implementation schemes. The nonlinear active noise control problem is also briefly discussed, as well as the rejection of non-gaussian impulsive noise. Numerical and implementation-related issues are also reviewed.

Course program
The course is structured as 6 blocks of 4-hour lessons.

L1. Acoustic noise models. Passive, semi-active and active control. Active control schemes: feedforward/feedback control, broadband/narrowband control, single/multiple channel control. Applications. Interference in plane sound fields. Limits of performance of active noise control methods.
L2. Adaptive filtering. Standard and modified LMS algorithm. Convergence analysis. Broadband feedforward control algorithms: FXLMS and leaky FXLMS.
L3. The effect of acoustic feedback. Filtered-U Recursive LMS. FxdLMS and FxdLMS/CE.
L4. Narrowband feedforward control. Periodic disturbance rejection. The waveform synthesis method. Adaptive notch filtering. Adaptive Noise Equalizer. Disturbance frequency estimation (methods by Regalia and Bodson).
L5. Feedback control methods. Multiple channel control. Secondary path modeling.
L6. Numerical and implementation-related issues: finite precision effects, quantization, automatic gain control. The nonlinear active noise control problem. Active noise control of impulsive noise signals.

Course material
Detailed slides of the course lessons will be made available.

Course calendar
The course will be offered in January 2015 with the following calendar:
L1. WED 14/01,  9.30-13.30
L2. THU  15/01,  9.30-13.30
L3. WED 21/01,  9.30-13.30
L4. THU  22/01,  9.30-13.30
L5. WED 28/01,  9.30-13.30
L6. THU  29/01,  9.30-13.30

All lessons will take place in the Sala Seminari at the ground floor of the Department of Electronics, Information and Bioengineering of the Politecnico di Milano.


Note Sulla Modalità di valutazione

At the end of the course students will be assigned a project.


Intervallo di svolgimento dell'attività didattica
Data inizio
Data termine

Calendario testuale dell'attività didattica
 

Bibliografia

Mix Forme Didattiche
Tipo Forma Didattica Ore didattiche
lezione
24.0
esercitazione
0.0
laboratorio informatico
0.0
laboratorio sperimentale
0.0
progetto
0.0
laboratorio di progetto
0.0

Informazioni in lingua inglese a supporto dell'internazionalizzazione
Insegnamento erogato in lingua Inglese
Disponibilità di materiale didattico/slides in lingua inglese
Disponibilità di libri di testo/bibliografia in lingua inglese
Possibilità di sostenere l'esame in lingua inglese
Disponibilità di supporto didattico in lingua inglese

Note Docente
Course calendar: L1. WED 14/01, 9.30-13.30 L2. THU 15/01, 9.30-13.30 L3. WED 21/01, 9.30-13.30 L4. THU 22/01, 9.30-13.30 L5. WED 28/01, 9.30-13.30 L6. THU 29/01, 9.30-13.30
schedaincarico v. 1.6.1 / 1.6.1
Area Servizi ICT
04/04/2020