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, laptop technology, indications and structures, and engineering physics. A basic wisdom of easy engineering arithmetic and physics is believed. difficulties are integrated on the finish of the chapters and a strategies guide is out there to teachers. This thoroughly revised and elevated classroom-tested 3rd variation covers the actual history 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 replica of sound in a variety of environments, and masses more.
--Presents a easy brief direction on acoustics, basic equations, and sound propagation
--Discusses the foundations of architectural acoustics, concepts for adjusting room acoustics, and numerous forms of sound absorbers
--Contains an summary of the acoustical, mechanical, and electric homes of loudspeakers, headphones, and microphones, that are vital transducers
--Provides a precis of the houses of listening to and voice
--Includes an overview of electronic audio and size in audio and acoustics
--WAV bargains a ideas guide for teachers to end-of-chapter difficulties -- available from the net additional price obtain source middle at jrosspub.com
Table of Contents Table of Contents
bankruptcy 1: Sound
bankruptcy 2: Acoustic Signals
bankruptcy three: listening to and Voice
bankruptcy four: easy 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 precise desk of contents, please stopover at jrosspub.com
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Extra info for Acoustics and Audio Technology, Third Edition
44, it is also necessary for the three sound waves on either side of the boundary to propagate at the same phase velocity along the boundary. 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.
5 shows a cut through a cylindrical tube, having a cross section area S = πb2 and maximum and minimum dimensions corresponding to the limits mentioned previously. 70) If the tube is truncated by a hard wall at x = 0, the particle velocity perpendicular to the wall must be zero, and the incident wave will be fully reflected by the discontinuity. The reflection coefficient will be 1 because of the hard wall, and the reflected wave is subject to the same impedance as the incoming wave (except for sign).
Using these curves, it is possible to calculate corresponding values for the attenuation coefficient m. Notice that the gas mixture of air involves several relaxation processes. The standard ISO 9613-1:1993 (E) can be used to calculate the attenuation of sound in air for general combinations of temperature and relative humidity. 3 Attenuation in dB/m for sound propagation in air as a function of frequency at a temperature of 20°C and with relative humidity, RH, as a parameter. 3 mx. 8 REFLECTION AND TRANSMISSION AT BOUNDARIES When a sound wave is incident on the boundary between two media, or on a boundary where the characteristic impedance of a medium changes, part of the power in the incident wave may be reflected and some transmitted.