Prerequisite/Recommended prerequisite for participation in the module

The module adds to the knowledge obtained in Fundamentals of Acoustics and Electro-acoustics (1st semester)

Content, progress and pedagogy of the module

Learning objectives

Knowledge

• Room acoustics
  • Sound fields in rooms
  • Absorption and reflection (e.g. impedance, absorption coefficient, porous and resonating absorbers)
  • Room modes (e.g. standing waves, distribution and classification of modes)
  • Geometrical and statistical acoustics (e.g. ray tracing, mirror image modelling, sound field build-up and decay, reverberation time: Sabine+Eyring)
  • Concert hall acoustics (Room acoustical parameters like e.g.: T₆₀,T₃₀,T₂₀, EDT, C₈₀,C₅₀, D, IACC, Subjective parameters, conditioning of rooms, Echo)
  • Speech intelligibility (e.g. STI and RASTI index)
• Building acoustics
  • Sound transmission between rooms
  • Sound transmission into buildings (facade insulation)
  • Air borne sound transmission (e.g. Single wall Double walls, measurement of transmissions loss)
  • Structural borne sound transmission (e.g. waves in solids, attenuation, impact noise, measurement of impact sound insulation)
• Environmental Acoustics
  • Effect of noise on humans (annoyance and damage) (Physiological reactions, sleep disturbance, work performance, assessment via questionnaires)
  • Noise Classification (types of noise, influence of surroundings, SPL, Frequency and time average, equivalent and exposure levels)
  • Noise from installations
  • Noise barriers
  • Noise assessment (ratings and noise descriptors, calculation of loudness, assessment of annoyance and hearing impairment)
• Relevant standards and legislation

Skills

• calculate and measure relevant room and building acoustical parameters
• measure and calculate relevant noise assessment parameters
• carry out measurements and calculations on noise barriers

Competences

• Sound fields in rooms
• Sound transmission into rooms
• Noise impact on humans based on relevant theories, standards, measurement and prediction methods.

Type of instruction

As described in the introduction to Chapter 3

Exam

Exams

Name of exam	Architectural and Environmental Acoustics
Type of exam	Written or oral exam
ECTS	5
Assessment	Passed/Not Passed
Type of grading	Internal examination
Criteria of assessment	As stated in Joint Programme Regulations http:/​/​www.en.tech.aau.dk/​education-programmes/​Education+and+Programmes/​