ACOUSTICS AND PSYCHOACOUSTICS

AUD4HES

2016

Credit points: 15

Subject outline

An understanding of the nature of sound is fundamental to the field of audiology. This subject includes an overview of the basic principles underlying the nature, analysis and perception of sound and speech. Through reading, demonstrations, exercises, projects and lectures, you will develop a foundation of the concepts that underlie acoustics and psychoacoustics. You will apply these concepts to practical problems in audiology. Theoretical knowledge will be complemented with hands-on laboratory exercises. Your learning in this subject will be assessed through exams, practical demonstrations and the writing of a diagnostic handout.

SchoolSchool of Allied Health

Credit points15

Subject Co-ordinatorAndrea Simpson

Available to Study Abroad StudentsYes

Subject year levelYear Level 4 - UG/Hons/1st Yr PG

Exchange StudentsYes

Subject particulars

Subject rules

Prerequisites Must complete 300 credit points in HZHAUD or HZHCAU or be admitted in HMAUD.

Co-requisitesN/A

Incompatible subjectsN/A

Equivalent subjectsN/A

Special conditionsN/A

Learning resources

Readings

Resource TypeTitleResource RequirementAuthor and YearPublisher
ReadingsFundamentals of hearing: an introduction.RecommendedYost, JW 20075TH EDN, ACADEMIC PRESS, SAN DIEGO.
ReadingsIntroduction to sound: acoustics for the hearing and speech sciences.RecommendedSpeaks, CE 19993RD EDN, SINGULAR PUBLISHING GROUP, SAN DIEGO.

Graduate capabilities & intended learning outcomes

01. Describe the nature of sound waves and their fundamental dimensions.

Activities:
1. Lecture and workshop classes: (i) introduction to acoustics - the nature of sound, simple harmonic motion and pure tones; (ii) characteristics of sound waves - wavelength, frequency, amplitude, phase; (iii) additive synthesis and complex periodic waves; (iv) aperiodic waves - noises and transients; (v) time and frequency-domain analysis of sound - waveforms and spectra. Additional information (notes, websites, animations and an interactive 'additive synthesis demo' application) provided on the LMS/lab computers. Worksheet of practice problems (not assessed). Components of a written examination.
Related graduate capabilities and elements:
Writing (Writing)

02. Communicate an understanding of sound intensity, sound pressure, and how they are related.

Activities:
2. Lecture and workshop classes: (i) amplitude, acoustic power and sound intensity; (ii) the decibel scale; (iii) sound pressure and the relationship between dB IL and dB SPL; (iv) combining sound intensities; (v) weighting scales. Additional information (notes, websites) provided on the LMS. Worksheet of practice problems (not assessed). Components of a written examination.
Related graduate capabilities and elements:
Writing (Writing)

03. Communicate an understanding of the concept of resonance, and how resonance applies to the production of vowels in speech.

Activities:
3. Lecture and workshop classes: (i) resonance, quarter-wavelength resonators; (ii) anatomy of the vocal organs and vocal tract resonance; (iii) the source-filter model of speech production; (iv) formants, spectrograms, voiced and unvoiced consonants and connected speech. Spectrogram assignment - students will carry out a spectrographic analysis of their own speech, discussing the role of resonance in formant production, and submit a written report documenting their results. Components of a written examination.
Related graduate capabilities and elements:
Writing (Writing)
Discipline Specific Competencies (Discipline Specific Competencies)

04. Synthesise an understanding of the principles of filtering, sound analysis, sound transmission and room acoustics.

Activities:
4. Lecture and workshop classes: (i) parameters of a filter; (ii) types of filters, including the octave filter; (iii) specification of level at the output of filters; (iv) filters and white/pink noise; (v) inverse square law; (vi) feflection and standing waves; (vii) absorption and reverberation time; (viii) refraction and diffraction. Worksheet of practice problems (not assessed). Components of a written examination.
Related graduate capabilities and elements:
Writing (Writing)

05. Incorporate an understanding of the concept of impedance in clinical audiology.

Activities:
5. Lecture and workshop classes: (i) mechanical and acoustical impedance; (ii) compliant and mass reactance; (iii) inverse quantities (admittance, conductance, susceptance); (iv) volume velocity and middle ear impedance. Tympanometry assignment - students will work in pairs to produce a two-page information handout on the diagnostic utility of multi-component/multi-frequency tympanometry. Components of a written examination.
Related graduate capabilities and elements:
Communication (Communication)
Discipline Specific Competencies (Discipline Specific Competencies)
Writing (Writing)

06. Evaluate feedback, distortion, and calibrate transducers transducers.

Activities:
6. Lecture and workshop classes. Linearity/nonlinearity: (ii) distortion, clipping and feedback; (iii) loudspeakers, hearing aid receivers, microphones, bone conductors; (iv) calibration of sensitivity and frequency response; (v) audiometric standards. Additional information (readings, websites) provided on the LMS. Components of a written examination.
Related graduate capabilities and elements:
Writing (Writing)
Discipline Specific Competencies (Discipline Specific Competencies)

07. Measure perception in audiology, using principles of psychoacoustics.

Activities:
7. Lecture and workshop classes: (i) psychophysical measurement techniques and signal detection theory; (ii) loudness perception; (iii) frequency resolution and masking; (iv pitch perception; (v) binaural hearing.
Related graduate capabilities and elements:
Discipline Specific Competencies (Discipline Specific Competencies)
Writing (Writing)

Subject options

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Start date between: and    Key dates

Melbourne, 2016, Semester 1, Day

Overview

Online enrolmentYes

Maximum enrolment sizeN/A

Enrolment information

Subject Instance Co-ordinatorAndrea Simpson

Class requirements

Lecture
One 2.0 hours lecture per week and delivered via face-to-face.

Tutorial
Four 1.0 hours tutorial every two weeks and delivered via face-to-face.
"Tutorials begin in the second week"

Assessments

Assessment elementComments% ILO*
Assignment one.Spectogram.20 03
Assignment two.Multi-frequency, multi-component tympanometry.20 05
One 2-hour written examination.60 01, 02, 03, 04, 05, 06, 07