By Mendel Kleiner
Acoustics and Audio expertise, 3rd Edition, is an introductory textual content for college kids of sound and vibration in addition to electric and digital engineering, civil and mechanical engineering, computing device technology, indications and structures, and engineering physics. A primary wisdom of easy engineering arithmetic and physics is believed. difficulties are integrated on the finish of the chapters and a suggestions handbook is out there to teachers. This thoroughly revised and accelerated classroom-tested 3rd version covers the actual historical past to and mathematical therapy of: sound propagation, the houses of human listening to, the new release and radiation of sound in addition to architectural acoustics, the applied sciences used for pickup, recording, and copy of sound in a number of environments, and lots more and plenty more.
--Presents a easy brief path on acoustics, primary equations, and sound propagation
--Discusses the rules of architectural acoustics, concepts for adjusting room acoustics, and numerous varieties of sound absorbers
--Contains an outline of the acoustical, mechanical, and electric houses of loudspeakers, headphones, and microphones, that are vital transducers
--Provides a precis of the homes of listening to and voice
--Includes an summary of electronic audio and size in audio and acoustics
--WAV bargains a recommendations handbook for teachers to end-of-chapter difficulties -- available from the net extra worth obtain source heart at jrosspub.com
Table of Contents Table of Contents
bankruptcy 1: Sound
bankruptcy 2: Acoustic Signals
bankruptcy three: listening to and Voice
bankruptcy four: uncomplicated Room Acoustics
bankruptcy five: Spatial Sound Perception
bankruptcy 6: Room Acoustics making plans and Design
bankruptcy 7: Absorbers, Reflectors, and Diffusers
bankruptcy eight: Waves in Solids and Plates
bankruptcy nine: Sound Radiation and Generation
bankruptcy 10: Sound Isolation
bankruptcy eleven: Vibration Isolation
bankruptcy 12: Microphones
bankruptcy thirteen: Phonograph Systems
bankruptcy 14: Loudspeakers
bankruptcy 15: Headphones and Earphones
bankruptcy sixteen: electronic illustration of Sound
bankruptcy 17: Audio Systems
For a extra specified desk of contents, please stopover at jrosspub.com
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Additional info for Acoustics and Audio Technology, Third Edition
69) 18 Acoustics and Audio Technology In some particularly interesting acoustical cases (for example, in some porous sound absorbers), the speed of sound in medium 2 is considerably smaller than in medium 1; that is, c2 << c1. This means that cos(φ2) ≈ 1, that is, φ2 ≈ 0 and, on the whole, independent of the angle of incidence φ1. The propagation in medium 2 is then approximately equal to the case of normal reaction and the propagation in the y-direction is neglected. When the angle of incidence φ1 becomes close to 90°—grazing incidence—the pressure reflection coefficient r will become −1 if medium 2 has a finite characteristic impedance.
This means that the angle of reflection must be the same as the angle of incidence. 4 Oblique sound incidence on a plane impedance boundary. The wave vector components in the y-direction must be the same for all three waves, since the wave numbers are based on the frequency of sound and the phase velocity. The wave number, which we have studied so far, is just the magnitude of the wave vector. In the present case, it is practical to regard the wave numbers for waves traveling at oblique angles as components of wave vectors in the x- and y-directions.
5 Some common filter types and their nominal frequency responses. 5 Hz. 6. The analysis of the frequency content of signals is called spectral analysis. One can subdivide the many forms of spectral analysis into narrow- and wide-band spectral analysis, into constant relative bandwidth, and constant bandwidth spectral analysis. In spectral analysis, bandpass filters are used. Such filters pass signals with frequencies with a certain frequency band, the pass band. Frequencies that are out-of-band are rejected.
Acoustics and Audio Technology, Third Edition by Mendel Kleiner