Conceptual Physics (12th Edition)
Conceptual Physics (12th Edition)
12th Edition
ISBN: 9780321909107
Author: Paul G. Hewitt
Publisher: PEARSON
Question
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Chapter 21, Problem 1RCQ
To determine

The differences between noise and music

Expert Solution & Answer
Check Mark

Answer to Problem 1RCQ

Solution:

    NoiseMusic
    Sound with a continuous structur.
    Sound with a discrete structur.
    Disturbance to ear.
    Pleasant feeling to the ears.
    Sounds with continuous range of frequencies,not necessarily having equal intensity.
    Sounds with fundamental frequency and overton.
    Described by spectral power distribution similar to statistical distributions.
    Described by weighted sums of sine’s and cosines.
    Random.
    Ordere.
    Not Periodic.
    Periodic..
    Noise can be white noise, pink noise.
    Consists of 5 elements: Melody,Harmony,Rhythm,Form,and Expression.

Explanation of Solution

White noise can be described by a flat power spectrum {p(f) = constant},where p(f) is the spectral density expressed in W/Hz, power present in a signal as a function of frequency.

Pink noise can be described as p(f)1f

Melody - Pitch+Rhyth.

Harmony-Simultaneously occurring frequencies, chords.

Rhythm-Repetitive occurrence of sounds (or any events) over a particular time interval.

Form- Overall structure of music (What pattern it follows regarding repetition and variations!).

Expression- Elements used to communicate music in an effective manner. It can be a certain way ofphrasing, articulation etc.

Conclusion:

Sound we hear is polytonic, similar to that of light we see is polychromatic.

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Chapter 21 Solutions

Conceptual Physics (12th Edition)

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