## Introduction to Sound: Acoustics for the Hearing and Speech SciencesThis powerful text continues with the same fundamental aim as the previous two editions to not present, but to teach the fundamental concepts of acoustics to students in the speech-language and hearing science. In addition to relocating revised practice problems and answers to a newly created Course Notes and Workbook for Introduction to Sound, the third edition also introduces new features. Supplements Course Notes and Workshop for Introduction to Sound 1-56593-980-8 - 176 pages, softcover, 8 1/2 x 11 |

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Results 1-3 of 73

Page 134

Thus, if intensity

16); if intensity

10); or if sound intensity is doubled, pressure

Thus, if intensity

**increases**by 16:1, pressure**increases**by only 4:1 (square root of16); if intensity

**increases**by 10:1, pressure**increases**by only 3.16 (square root of10); or if sound intensity is doubled, pressure

**increases**by only 1.414 (square ...Page 137

For each tenfold

dB to a maximum of 100 dB SPL when px = 2 x 106 uPa. Similarly, if you move

down the scale, px decreases progressively by powers of 10, and for each power

...

For each tenfold

**increase**in sound pressure, dB SPL**increases**additively by 20dB to a maximum of 100 dB SPL when px = 2 x 106 uPa. Similarly, if you move

down the scale, px decreases progressively by powers of 10, and for each power

...

Page 223

With each subsequent

output

69.5 for ...

With each subsequent

**increase**of fc by a factor of 2:1, the bandwidth also**increases**by 2:1, twice as much energy is passed by the filter, and the level at theoutput

**increases**successively by 3 dB. Thus, the level is 66.5 for fc = 200 Hz,69.5 for ...

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### Contents

H A P T E R 1 The Nature of Sound Waves | 22 |

H A P T E R 2 Simple Harmonic Motion | 42 |

CHAPTER3 Logarithms and Antilogarithms | 84 |

Copyright | |

6 other sections not shown

### Common terms and phrases

acoustic amplitude of vibration amplitude spectrum angle antinodes band-pass filter calculate called center frequency Chapter complex periodic complex wave compliant reactance components compression corresponds cutoff frequency cycle damping dB SPL dB/octave decibels decreases density distance dyne/cm2 elastic system equal Equation equilibrium example filter curve function fundamental frequency harmonic distortion impedance increases input instantaneous amplitudes integer multiples intensity level inversely magnitude mass reactance maximal maximum displacement medium meter molecules move natural frequency octave octave-band level output panel particle displacement pendulum pressure spectrum level problem propagation quency ratio reactance restoring force result sawtooth wave scientific notation simple harmonic simple harmonic motion sine wave sinusoidal sound energy sound intensity sound pressure level sound wave speed of sound square wave standing wave starting phase string surface Table tion tube tuning fork unit of measure velocity vibratory motion voltage watt/m2 waveform wavelength white noise