Electroacoustics and Ultrasonics
Applied Acoustics : Education : Course Pages : Electroacoustics and Ultrasonics
General course information
Course code: VTA141 Course description
Lecturer: Per Sjösten
Course Assistant: Lars Hansson
Classroom exercises: Lars Hansson
Lab. assistant: Lars Hansson
Lecture hall: Teaching laboratory at Applied Acoustics.
Exam: Monday, December 17, 14-18. You cannot register to this exam.
Final syllabus for Electroacoustics (20121105)
Welcome to the EAU course for 2012. The course consists of 11 lectures and 9 exercises. The exact number of exercises may change. Completed course (approved lab-work, homework, and exam) gives 7.5 ECTS credits.
NB: You need a password to download documents from this page! Passwords are only available to our course students.
Lab-work: The course contains one compulsory lab exercise.
Noteboard
2012-12-10
Added a pdf on Small Room Acoustics. It is not finished, but will hopefully be of some help.
Posted by Per
2012-12-07
New pdf on Loudspeakers Part II available.
Posted by Per
2012-11-25
New pdf on Microphones Part II available.
Posted by Per
2012-11-7
New pdf on Radiation available. Also some problems (and solutions) on electrical circuits.
Posted by Per
2012-11-5
The new schedule is finished. It is available in the final syllabus above.
Posted by Per
Course Literature
The main course literature consists of downloadable PDFs, written by Per Sjösten.
It is possible to borrow the book Acoustics, by Leo L. Beranek. To do so, you need to leave a deposit. Contact Gunilla or Lars to arrange this.
Available on this web site are also: The electroacoustics and ultrasonics problems & solutions manuals, two lists of equations ("EAU Useful formulae & ATA Useful formulae") and the lab spec.
Course material:
Sjösten - Electrical circuits and analogies (Lectures 1 & 2)
Sjösten - Introduction to microphones (Lectures 3 & 4)
Sjösten - Part II on microphones
Sjösten - Introduction to loudspeakers (Lectures 5 & 6)
Sjösten - Loudspeakers, Part II (Lectures 5 & 6)
Sjösten - Chapter on radiation
Sjösten - Unfinished chapter on small room acoustics
Problems and solutions manual:
Problems and solutions to electrical circuits
Solutions to electrical circuits problems
Additional downloads
Journal papers
This is extra reading for those of you who are interested in loudspeaker design.
Thiele - Loudspeaker alignments
Small - Vented box systems part IV
Other books
Useful formulae
EAU - Useful formulae (VTA141)
ATA - Useful formulae (VTA135)
NB: Equation and chapter numbers in the list of equations refer to Mendel Kleiner's book: Audio Technology & Acoustics (same numbers in the Swedish edition).
EXERCISE NOTES
Exercises 1, 2, & 3 - including recommendations on what problems you should solve on your own.
Matlab function to plot array directivity
LABORATORY WORK
The course contains one compulsory lab exercise:
1) An electrodynamic loudspeaker, its electroacoustical analogy, and its sound radiation properties. Diffraction.
A schedule for the lab-work will be posted at the department. The lab notes contain important information and homework that should be studied prior to lab attendance.
Lab times
Will be posted...
Lab 1 : A loudspeaker and its sound radiation properties
COURSE EVALUATION
Exam
Exams for this course are written tests. An exam is likely to consist of 6 mathematical or essay problems. A correct solution is awarded 5 points, which gives a maximum of 30 points for the test. A passing grade is 12 points.
The date for the regular exam will be decided on during the course.
Tools you are allowed to use during the exam:
- Your favorite dictionary, should you need one.
- Mathematical tables such as such as Beta, Standard Mathematical Tables, Physics Handbook, Tefyma
- Electronic calculator without a text memory or with a cleared text memory
- List of useful formulae for the Electroacoustics and Ultrasonics course. (
EAU - Useful formulae (VTA141)). - List of useful formulae for the Audio Technology and Acoustics course. (
ATA - Useful formulae (VTA135)). - Note that no notes, except for corrections to errors, are allowed in any material which you bring to the exam.
Do not forget to specify the assumptions done in your solutions to the problems, to motivate the steps taken, and to give units when relevant!
OLD EXAMS
