Acoustics 4

Chapters

• Acoustics Module 4 – Welcome and Introduction
• History of Technical Acoustics
• Branches of Acoustics
• Basics IV – Sound Field: Near Filed – Far Field, Sperical Wave – Plane Wave
• Sound Field Quantities – Sound Pressure II
• Insertion: Sound Pressure Gradient – Frequency Dependency
• Sound Field Quantities: Particle Velocity
• Insertion: Root Mean Square (RMS)
• Sound Energy Quantities – Sound Intensity & Sound Power, Sound Intensity Level
• Additional Sound Field Quantities: Acoustic Impedance & Particle Displacement
• Summary of Sound Field and Sound Energy Quantities
• Room Acoustics II – Absorption
• Sound Propagation in a Room II – Obstacles and Sound Insulation
• Sound Absorption: Absorption Coefficient and Absorption Capacity
• Functional Principles of Sound Absorption I – Porous Absorbers
• Functional Principles of Sound Absorption II – Membrane Absorber, Helmholtz Resonators
• Absorber Types: Low, Mid and High Frequency Absorbers
• Sound Absorbers – Special Applications in the Room: Distance to the Wall
• Windows & Doors
• Effectivity of Absorbers in Corners – Stacking Bass Traps
• Bass traps in front of each other or on top of each other?
• How Many Absorbers? – Modification of Absorbers
• Loudspeakers in the Room II: Dispersion Pattern, Placement against the Wall (Bass Response)
• Loudspeakers in the Room: Reflections from the Rear Wall: Comb Filters – Subwoofer, Windows
• Supplementary Information: Comb Filter Frequencies at Different Wall Distances
• Monitors in the Room: Critical Distance
• Tutorial: Setting a Fixed Monitoring Level
• Psychoacoustics II: Equal Loudness Contours 2 – Fletcher & Munson
• Loudness Level in Phon vs Loudness in Sone
• Total Level of Overlaid Audio Signals
• Perception of Frequencies – Pitch, Vibrato, Missing Fundamental
• Perception of Frequencies: Adaptation & Masking
• Test Yourself!