Communication Acoustics

A tantárgy neve magyarul / Name of the subject in Hungarian: A kommunikáció akusztikája

Last updated: 2014. március 31.

Budapest University of Technology and Economics
Faculty of Electrical Engineering and Informatics
Engineering Information Technology
Electrical Engineering
MSc Program
Specialization in Digital Media Technology 
Course ID Semester Assessment Credit Tantárgyfélév
VIHIM000   2/1/0/v 4  
3. Course coordinator and department Dr. Augusztinovicz Gusztáv Fülöp, Hálózati Rendszerek és Szolgáltatások Tanszék
4. Instructors Dr. Fülöp Augusztinovicz Associate Professor Dept. of Networked Systems and Services
Dr. Ferenc Márki Associate Professor Dept. of Networked Systems and Services
Dr. Péter Fiala Assistant Professor Dept. of Networked Systems and Services

5. Required knowledge Mathematics, Physics
6. Pre-requisites
Tematikaütközés miatt a tárgyat csak azok vehetik fel, akik korábban nem hallgatták a következő tárgyakat:
Villamosmérnöki Szak, MSc képzés, Médiatechnológiák és -kommunikáció szakirány kötelezően választható tárgyát
BMEVIHIM226    Mérnöki akusztika (Engineering Acoustics)
BME GTK Kommunikáció- és médiatudomány alapképzési szak, Kommunikációtechnológia  specializáció, Kötelezően választható specializációs tárgyát
BMEVIHIA073    Kommunikáció-akusztika (Communication-Acoustics)
7. Objectives, learning outcomes and obtained knowledge The course provides students with a comprehensive introduction to the physical mechanisms, tools and systems of exchange and transmission of information by means of sounds, speech and music. In the first part of the course an introduction is given to the basic principles of various fields of acoustics, followed by an overview of the most important electro-acoustic elements such as speakers, microphones, sound recorders and studio equipment. Special attention is devoted to the practical aspects of sound processing and recording, including the aesthetic and cultural aspects as well.
8. Synopsis

1st week:  Basic notions and quantities of acoustics: sound pressure, particle velocity, volume velocity, specific and acoustic impedance as ratio of pressure and velocity. The notion of the decibel: derivation, use, typical values and calculation for multiple sources.

2nd week:  Classification, generation, characteristics and propagation of sounds. Various types of sound waves: plane wave, spherical wave, cylindrical wave.

3rd week:  Basics of the human hearing: construction and operation of the human ear. Characteristics of the human hearing mechanism in frequency and time domain.

4th week:  Basic elements of psychoacoustics. Characteristics of binaural hearing, direction sensation, basics of stereo recording and reproduction. Basic psycho-acoustic quantities: loudness, sharpness and roughness.

5th week:  Characteristics of human speech, generation of speech as a physical process. The mechanisms and acoustics of speech production. Speech production models and computer techniques.

6th week:  Basics of musical acoustics: scales, objective and subjective quantities of pitch. Characteristics of musical sounds and instruments. Sound generation mechanisms of chordophone and wind instruments.

7th week:  Sounds in closed spaces: diffuse sound field, free field, transition from free to reflected sound field. The effect of various sound fields on sound recording and reproduction techniques as well as on noise control measures.

8th week:  Sound reflection from, and absorption on, surfaces. Sound transmission through solid structures. Notions, methods and description of sound insulation. Practical application of sound insulation techniques.

9th week:  Basic notions and elements of room acoustics. Optimal design of auditoria, recording and radio studios, auditoria, school rooms, concert halls, etc.

10th week:  Acoustic sensors: microphones. Operating mechanisms and construction of microphones, their characteristics and typical application. Selection of the best matching microphone  for practical purposes.

11th week:  Acoustic actuators: speakers and speaker boxes. Operating mechanisms and construction of speakers, their characteristics and typical application. Selection of the best matching speaker for practical purposes.

12th week:  Principles and practical tools of digital signal processing of acoustic signals.

13th week:  Basic elements of modern sound studio systems: mixing consoles, effect processors, processing units. Standards and standard interfaces for digital signal processing, data reduction, storage and retrieval.

14th week:  Aesthetic aspects of modern sound technologies, elements of sound culture.

9. Method of instruction 2 hours of lecture and 1 hour exercise (in the average). The students can get acquainted with the educational recording studio of the Laboratory of Acoustics and Studio Technologies too.

10. Assessment 1 test and 1 home work during the semester. The average grade of the two assessments should not be lower than satisfactory (2.0).
11. Recaps A repeated test in the first week after the semester has to be written if the average of the two assessments is not satisfactory, or if the tests was not written. The homework has to be submitted up to the end of the week after the semester.
12. Consultations According to the agreement between the students and lecturer.
13. References, textbooks and resources Kuttruff, H.: Acoustics: An introduction. Taylor & Francis, 2007
J. Blauert (Ed.): Communication Acoustics. Springer Verlag, Heidelberg - New York, 2004.
D. I. Havelock, S. Kuwano and M. Vorländer, Handbook of signal processing in acoustics. Springer, 2008.
N. H. Fletcher, Th. D. Rossing, The physics of musical instruments. Springer, 1998.
F. Rumsey and T. McCormick,  Sound and Recording. 6th Edition, Focal Press, 2009

14. Required learning hours and assignment
Preparation to lectures
Preparation to the midtern exam
Studying the written material
Preparation to the exam
15. Syllabus prepared by Dr. Fülöp Augusztinovicz Associate Professor Dept. of Networked Systems and Services