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Musical Sounds Musical Sounds Physical Science101 Chapter twenty Amanda Hyer
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Musical Sounds Physical Science101 Chapter twenty Amanda Hyer.

Mar 26, 2015

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Page 1: Musical Sounds Physical Science101 Chapter twenty Amanda Hyer.

Musical SoundsMusical SoundsMusical SoundsMusical Sounds

Physical Science101Chapter twenty

Amanda Hyer

Page 2: Musical Sounds Physical Science101 Chapter twenty Amanda Hyer.

Noise0.08839871 -0.2194841 0.42826439 0.77400521 -0.9591889 -0.99590410.94544515 0.04418245 -0.0882786 -0.1758679 -0.7732412 -2.02377220.6832397 0.3047532 -0.580513 -0.9453666 0.08947961 1.81188258-0.3878094 0.54397052 -0.912896 -0.745274 0.8738841 2.30358279-0.9997558 0.74507295 -0.993902 0.21918997 0.89342866 -1.233302-0.4281554 0.89396965 -0.8012248 0.95884728 0.13100707 1.586563990.65031074 0.98022773 -0.3879206 0.71508718 -0.7460774 0.334805190.95891572 0.99780327 0.13220235 -0.262084 -0.9701637 1.340707010.13232187 0.94546479 0.61592173 -0.9704553 -0.3451221 2.11569096-0.8509194 0.82687954 0.9300395 -0.6835038 0.58198476 2.49203002-0.8268117 0.65035654 0.98805951 0.30446608 0.99971424 2.67209930.17610529 0.42826439 0.77400521 0.98016804 0.54245198 2.838453010.97054255 0.17616464 0.3468191 0.65058549 -0.389587 4.699134680.61601671 -0.0882786 -0.1758679 -0.3462536 -0.9806431 -1.8560397-0.4677718 -0.3465364 -0.6501275 -0.9879664 -0.7133993 -2.7922646-0.9977953 -0.580513 -0.9453666 -0.6163966 0.17824135 -1.0536968-0.3465929 -0.7738143 -0.9802873 0.38736481 0.91387776 0.13318650.71491859 -0.912896 -0.745274 0.9938353 0.84965011 3.477560160.9300838 -0.988013 -0.3050403 0.5810038 0.04177313 1.003309690.04418245 -0.993902 0.21918997 -0.4277195 -0.8026654 -2.1659071-0.8940237 -0.9301502 0.68306359 -0.9977632 -0.9445776 -4.8163028-0.7738525 -0.8012248 0.95884728 -0.5444763 -0.2597559 1.209919190.26243303 -0.6161592 0.97060062 0.46723886 0.65241501 4.80134132

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2

4

6

0 50 100 150 200 250

Page 3: Musical Sounds Physical Science101 Chapter twenty Amanda Hyer.

MusicMusicMusicMusic50 100 2000 -0.2531828 -0.2619892 -0.515172

-0.9589243 -0.0221213 0.02651961 -0.954526-0.5440211 0.29030559 0.28363355 0.029918030.65028784 -0.465053 0.20497191 0.390206780.91294525 0.49011983 -0.1163428 1.28672225-0.1323518 -0.3574382 -0.2999268 -0.7897167-0.9880316 0.10971263 -0.1284466 -1.0067656-0.4281827 0.17332473 0.19509322 -0.05976470.74511316 -0.4005763 0.28767472 0.632211560.85090352 0.49889964 0.03969656 1.38949973-0.2623749 -0.4366486 -0.2552758 -0.9542993-0.9997552 0.23385926 -0.2480435 -1.0139394-0.3048106 0.04419936 0.05283159 -0.20777970.82682868 -0.3080321 0.29116276 0.809959340.77389068 0.47272258 0.18480501 1.43141827-0.3877816 -0.485264 -0.1403315 -1.0133772-0.9938887 0.34161985 -0.2993386 -0.9516074-0.1760756 -0.088023 -0.1039779 -0.36807650.89399666 -0.1939047 0.21447558 0.914567530.68326171 0.41342282 0.27902514 1.37570967-0.5063656 -0.4998779 0.01325473 -0.9929888-0.9705353 0.42544384 -0.2682071 -0.8132985-0.0442427 -0.2140777 -0.2321557 -0.4904761

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Page 4: Musical Sounds Physical Science101 Chapter twenty Amanda Hyer.

PitchPitchPitchPitch1 0 04 50 50

0 0 -0 -0 00.25 0.84147098 -0 -0 0.841470980.5 0.90929743 -0 -0 0.909297430.75 0.14112001 -0 -0 0.14112001

1 -0.7568025 -0 -0 -0.75680251.25 -0.9589243 -0 -0 -0.95892431.5 -0.2794155 -0 -0 -0.27941551.75 0.6569866 -0 -0 0.6569866

2 0.98935825 -0 -0 0.989358252.25 0.41211849 -0 -0 0.412118492.5 -0.5440211 -0 -0 -0.54402112.75 -0.9999902 -0 -0 -0.9999902

3 -0.5365729 -0 -0 -0.53657293.25 0.42016704 -0 -0 0.420167043.5 0.99060736 -0 -0 0.990607363.75 0.65028784 -0 -0 0.65028784

-3

-2

-1

0

1

2

3

0 50 100 150 200 250

0.25 0.24740396 -0 -0 0.247403960.5 0.47942554 -0 -0 0.479425540.75 0.68163876 -0 -0 0.68163876

1 0.84147098 -0 -0 0.841470981.25 0.94898462 -0 -0 0.948984621.5 0.99749499 -0 -0 0.997494991.75 0.98398595 -0 -0 0.98398595

2 0.90929743 -0 -0 0.909297432.25 0.7780732 -0 -0 0.77807322.5 0.59847214 -0 -0 0.598472142.75 0.38166099 -0 -0 0.38166099

3 0.14112001 -0 -0 0.141120013.25 -0.1081951 -0 -0 -0.10819513.5 -0.3507832 -0 -0 -0.35078323.75 -0.5715613 -0 -0 -0.5715613

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0 50 100 150 200 250

High

Low

Page 5: Musical Sounds Physical Science101 Chapter twenty Amanda Hyer.

Intensity LoudnessIntensity LoudnessIntensity LoudnessIntensity Loudness0.25 0.24740396 -0 -0 0.247403960.5 0.47942554 -0 -0 0.479425540.75 0.68163876 -0 -0 0.68163876

1 0.84147098 -0 -0 0.841470981.25 0.94898462 -0 -0 0.948984621.5 0.99749499 -0 -0 0.997494991.75 0.98398595 -0 -0 0.98398595

2 0.90929743 -0 -0 0.909297432.25 0.7780732 -0 -0 0.77807322.5 0.59847214 -0 -0 0.598472142.75 0.38166099 -0 -0 0.38166099

3 0.14112001 -0 -0 0.141120013.25 -0.1081951 -0 -0 -0.1081951

-3

-2

-1

0

1

2

3

0 50 100 150 200 250

0.25 0.74221188 -0 -0 0.742211880.5 1.43827662 -0 -0 1.438276620.75 2.04491628 -0 -0 2.04491628

1 2.52441295 -0 -0 2.524412951.25 2.84695386 -0 -0 2.846953861.5 2.99248496 -0 -0 2.992484961.75 2.95195784 -0 -0 2.95195784

2 2.72789228 -0 -0 2.727892282.25 2.33421959 -0 -0 2.334219592.5 1.79541643 -0 -0 1.795416432.75 1.14498298 -0 -0 1.14498298

3 0.42336002 -0 -0 0.423360023.25 -0.3245854 -0 -0 -0.3245854

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-1

0

1

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0 50 100 150 200 250

Soft

Loud

Page 6: Musical Sounds Physical Science101 Chapter twenty Amanda Hyer.
Page 7: Musical Sounds Physical Science101 Chapter twenty Amanda Hyer.

Sound IntensitySound Intensity

I J / s / m2 J / (sm2) W / m2

I2 4R22 I14R1

2

I 1R2

Page 8: Musical Sounds Physical Science101 Chapter twenty Amanda Hyer.
Page 9: Musical Sounds Physical Science101 Chapter twenty Amanda Hyer.

Decibel Sound LevelDecibel Sound LevelDecibel Sound LevelDecibel Sound LevelSource of Sound Intensity (W/m^2) Sound Level dBJet at 30 m 1E+02 140

1E+00 120Disco Music 1E-01 110

1E-02 100Riveter 1E-03 90

1E-04 801E-05 70

Busy Street traffic 1E-06 601E-07 50

Quiet Radio 1E-08 401E-09 30

Whisper 1E-10 201E-11 10

Threshold of Hearing 1E-12 0

Page 10: Musical Sounds Physical Science101 Chapter twenty Amanda Hyer.

Decibel Sound LevelDecibel Sound LevelDecibel Sound LevelDecibel Sound Level

log10x x

decibel 10 logIntensity

10 12

Page 11: Musical Sounds Physical Science101 Chapter twenty Amanda Hyer.

ExerciseExerciseExerciseExercise What is decibel level of a sound that is 1000

times louder than the threshold of human hearing?

Given: Intensity/10-12=1000=103

Wanted: decibel level Solution: dB=10log(Intensity/10-12) dB=10log(103) = 30 dB

Page 12: Musical Sounds Physical Science101 Chapter twenty Amanda Hyer.

ExerciseExerciseExerciseExercise What is decibel level of a sound that is

10,000 times louder than a sound of 50 dB? Given: 50 dB=dB1 and Int2 =10,000 Int1 Wanted: dB2 Solution: Int1=100,000 (10-12) Int2=10,000*100,000 (10-12)= 109(10-12) dB2=10log(109) = 90 dB

Page 13: Musical Sounds Physical Science101 Chapter twenty Amanda Hyer.

it’s actually easyit’s actually easyit’s actually easyit’s actually easy intensity 10 (101) louder 10 dB higher intensity 100 (102) louder 20 dB higher intensity 1000 (103) louder 30 dB higher intensity 10,000 (104) louder 40 dB higher intensity 1,000,000 (106) louder 60 dB

higher

Page 14: Musical Sounds Physical Science101 Chapter twenty Amanda Hyer.

ExerciseExerciseExerciseExercise What is decibel level of a sound that is 1000

times louder than a sound of 70 dB? Given: 70 dB=dB1 and Int2 =1000 Int1 Wanted: dB2 Solution: dB2 is 30 dB higher dB2=70+30 dB=100 dB

Page 15: Musical Sounds Physical Science101 Chapter twenty Amanda Hyer.
Page 16: Musical Sounds Physical Science101 Chapter twenty Amanda Hyer.

QualityQuality

The quality of sound from a musical instrument depends on the number of higher harmonics included with the fundamental frequency.

Page 17: Musical Sounds Physical Science101 Chapter twenty Amanda Hyer.

Quality (a pure tone)Quality (a pure tone)

10 20 30 40 50 60 700 0 0 0 0 0 0 0

0.19866933 0 0 0 0 0 0 0.198669330.38941834 0 0 0 0 0 0 0.389418340.56464247 0 0 0 0 -0 -0 0.564642470.71735609 0 0 -0 -0 -0 -0 0.717356090.84147098 0 0 -0 -0 -0 0 0.841470980.93203909 0 -0 -0 -0 0 0 0.932039090.98544973 0 -0 -0 0 0 -0 0.985449730.9995736 -0 -0 0 0 -0 -0 0.99957360.97384763 -0 -0 0 0 -0 0 0.973847630.90929743 -0 -0 0 -0 -0 0 0.909297430.8084964 -0 0 0 -0 0 0 0.80849640.67546318 -0 0 -0 -0 0 -0 0.675463180.51550137 -0 0 -0 0 0 -0 0.515501370.33498815 -0 0 -0 0 -0 0 0.334988150.14112001 -0 0 -0 0 -0 0 0.14112001-0.0583741 0 -0 0 -0 0 -0 -0.0583741-0.2555411 0 -0 0 -0 0 -0 -0.2555411-0.4425204 0 -0 0 -0 0 0 -0.4425204-0.6118579 0 -0 0 0 -0 0 -0.6118579-0.7568025 0 -0 -0 0 -0 0 -0.7568025-0.8715758 0 0 -0 0 0 -0 -0.8715758

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-1

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0

0.5

1

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0 0.5 1 1.5 2 2.5

Page 18: Musical Sounds Physical Science101 Chapter twenty Amanda Hyer.

Quality (1, .4, 0, .2)Quality (1, .4, 0, .2)0 0 0 0 0 0 0

0.02 0.19866933 0.15576734 0 0.14347122 0 00.04 0.38941834 0.28694244 0 0.19991472 0 00.06 0.56464247 0.37281563 0 0.13509264 0 -00.08 0.71735609 0.39982944 0 -0.0116748 -0 -00.1 0.84147098 0.36371897 0 -0.1513605 -0 -00.12 0.93203909 0.27018527 -0 -0.1992329 -0 00.14 0.98544973 0.13399526 -0 -0.1262533 0 00.16 0.9995736 -0.0233497 -0 0.02330984 0 -00.18 0.97384763 -0.1770082 -0 0.15873357 0 -00.2 0.90929743 -0.302721 -0 0.19787165 -0 -00.22 0.8084964 -0.3806408 0 0.11698344 -0 00.24 0.67546318 -0.3984658 0 -0.0348654 -0 00.26 0.51550137 -0.3533819 0 -0.1655653 0 00.28 0.33498815 -0.2525067 0 -0.1958355 0 -00.3 0.14112001 -0.1117662 0 -0.1073146 0 -00.32 -0.0583741 0.04661968 -0 0.04630197 -0 00.34 -0.2555411 0.19764534 -0 0.17183236 -0 00.36 -0.4425204 0.31746715 -0 0.19313156 -0 00.38 -0.6118579 0.38716787 -0 0.09727974 0 -00.4 -0.7568025 0.3957433 -0 -0.0575807 0 -00.42 -0.8715758 0.34183956 0 -0.1775134 0 00.44 -0.9516021 0.23396688 0 -0.1897689 -0 0

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Page 19: Musical Sounds Physical Science101 Chapter twenty Amanda Hyer.

Quality (1, 0, 0, .3, 0, 0, .5)Quality (1, 0, 0, .3, 0, 0, .5)

0 0 0 0 0 0 00.02 0.19866933 0 0 0.21520683 0 00.04 0.38941834 0 0 0.29987208 0 00.06 0.56464247 0 0 0.20263895 0 -00.08 0.71735609 0 0 -0.0175122 -0 -00.1 0.84147098 0 0 -0.2270407 -0 -00.12 0.93203909 0 -0 -0.2988494 -0 00.14 0.98544973 0 -0 -0.18938 0 00.16 0.9995736 -0 -0 0.03496476 0 -00.18 0.97384763 -0 -0 0.23810036 0 -00.2 0.90929743 -0 -0 0.29680747 -0 -00.22 0.8084964 -0 0 0.17547516 -0 00.24 0.67546318 -0 0 -0.052298 -0 00.26 0.51550137 -0 0 -0.2483479 0 00.28 0.33498815 -0 0 -0.2937533 0 -00.3 0.14112001 -0 0 -0.1609719 0 -00.32 -0.0583741 0 -0 0.06945295 -0 00.34 -0.2555411 0 -0 0.25774854 -0 00.36 -0.4425204 0 -0 0.28969733 -0 00.38 -0.6118579 0 -0 0.14591961 0 -00.4 -0.7568025 0 -0 -0.086371 0 -00.42 -0.8715758 0 0 -0.2662701 0 00.44 -0.9516021 0 0 -0.2846533 -0 0

-2

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Page 20: Musical Sounds Physical Science101 Chapter twenty Amanda Hyer.

FourierFourier

10 20 30 40 50 60 700 0 0 0 0 0 0 0

0.19866933 0 0 0 0 0 0 0.198669330.38941834 0 0 0 0 0 0 0.389418340.56464247 0 0 0 0 -0 -0 0.564642470.71735609 0 0 -0 -0 -0 -0 0.717356090.84147098 0 0 -0 -0 -0 0 0.841470980.93203909 0 -0 -0 -0 0 0 0.932039090.98544973 0 -0 -0 0 0 -0 0.985449730.9995736 -0 -0 0 0 -0 -0 0.99957360.97384763 -0 -0 0 0 -0 0 0.973847630.90929743 -0 -0 0 -0 -0 0 0.909297430.8084964 -0 0 0 -0 0 0 0.80849640.67546318 -0 0 -0 -0 0 -0 0.675463180.51550137 -0 0 -0 0 0 -0 0.515501370.33498815 -0 0 -0 0 -0 0 0.334988150.14112001 -0 0 -0 0 -0 0 0.14112001-0.0583741 0 -0 0 -0 0 -0 -0.0583741-0.2555411 0 -0 0 -0 0 -0 -0.2555411-0.4425204 0 -0 0 -0 0 0 -0.4425204-0.6118579 0 -0 0 0 -0 0 -0.6118579-0.7568025 0 -0 -0 0 -0 0 -0.7568025-0.8715758 0 0 -0 0 0 -0 -0.8715758

-1.5

-1

-0.5

0

0.5

1

1.5

0 0.5 1 1.5 2 2.5

Any periodic signal can be made up from a sum of harmonic waves (sine waves).

Page 21: Musical Sounds Physical Science101 Chapter twenty Amanda Hyer.

Fourier (1, 0, -(1/9))Fourier (1, 0, -(1/9))Any periodic signal can be made up from a sum of harmonic waves (sine waves).

0 0 0 -0 0 0 00.02 0.19866933 0 -0.0627381 0 0 00.04 0.38941834 0 -0.1035599 0 0 00.06 0.56464247 0 -0.1082053 0 0 -00.08 0.71735609 0 -0.0750515 -0 -0 -00.1 0.84147098 0 -0.01568 -0 -0 -00.12 0.93203909 0 0.04916894 -0 -0 00.14 0.98544973 0 0.09684175 -0 0 00.16 0.9995736 -0 0.11068496 0 0 -00.18 0.97384763 -0 0.08586272 0 0 -00.2 0.90929743 -0 0.03104617 0 -0 -00.22 0.8084964 -0 -0.0346157 0 -0 00.24 0.67546318 -0 -0.0881853 -0 -0 00.26 0.51550137 -0 -0.1109493 -0 0 00.28 0.33498815 -0 -0.0949554 -0 0 -00.3 0.14112001 -0 -0.0457909 -0 0 -00.32 -0.0583741 0 0.01936964 0 -0 00.34 -0.2555411 0 0.07776385 0 -0 00.36 -0.4425204 0 0.10899291 0 -0 00.38 -0.6118579 0 0.10214761 0 0 -00.4 -0.7568025 0 0.05961921 -0 0 -00.42 -0.8715758 0 -0.0037359 -0 0 00.44 -0.9516021 0 -0.0657859 -0 -0 0

-1.5

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0

0.5

1

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0 0.5 1 1.5 2 2.5

Page 22: Musical Sounds Physical Science101 Chapter twenty Amanda Hyer.

Fourier (1, 0, -(1/9), 0, +(1/25))Fourier (1, 0, -(1/9), 0, +(1/25))Any periodic signal can be made up from a sum of harmonic waves (sine waves).

0 0 0 -0 0 0 00.02 0.19866933 0 -0.0627381 0 0.03365884 00.04 0.38941834 0 -0.1035599 0 0.0363719 00.06 0.56464247 0 -0.1082053 0 0.0056448 -00.08 0.71735609 0 -0.0750515 -0 -0.0302721 -00.1 0.84147098 0 -0.01568 -0 -0.038357 -00.12 0.93203909 0 0.04916894 -0 -0.0111766 00.14 0.98544973 0 0.09684175 -0 0.02627946 00.16 0.9995736 -0 0.11068496 0 0.03957433 -00.18 0.97384763 -0 0.08586272 0 0.01648474 -00.2 0.90929743 -0 0.03104617 0 -0.0217608 -00.22 0.8084964 -0 -0.0346157 0 -0.0399996 00.24 0.67546318 -0 -0.0881853 -0 -0.0214629 00.26 0.51550137 -0 -0.1109493 -0 0.01680668 00.28 0.33498815 -0 -0.0949554 -0 0.03962429 -00.3 0.14112001 -0 -0.0457909 -0 0.02601151 -00.32 -0.0583741 0 0.01936964 0 -0.0115161 00.34 -0.2555411 0 0.07776385 0 -0.0384559 00.36 -0.4425204 0 0.10899291 0 -0.0300395 00.38 -0.6118579 0 0.10214761 0 0.00599509 -00.4 -0.7568025 0 0.05961921 -0 0.03651781 -00.42 -0.8715758 0 -0.0037359 -0 0.03346623 00.44 -0.9516021 0 -0.0657859 -0 -0.0003541 0

-1.5

-1

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0

0.5

1

1.5

0 0.5 1 1.5 2 2.5

Page 23: Musical Sounds Physical Science101 Chapter twenty Amanda Hyer.

Fourier (1, 0, -(1/9), 0, 1/25,0,-(1/49),0)

Fourier (1, 0, -(1/9), 0, 1/25,0,-(1/49),0)

0 0 0 -0 0 0 00.02 0.19866933 0 -0.0627381 0 0.03365884 00.04 0.38941834 0 -0.1035599 0 0.0363719 00.06 0.56464247 0 -0.1082053 0 0.0056448 -00.08 0.71735609 0 -0.0750515 -0 -0.0302721 -00.1 0.84147098 0 -0.01568 -0 -0.038357 -00.12 0.93203909 0 0.04916894 -0 -0.0111766 00.14 0.98544973 0 0.09684175 -0 0.02627946 00.16 0.9995736 -0 0.11068496 0 0.03957433 -00.18 0.97384763 -0 0.08586272 0 0.01648474 -00.2 0.90929743 -0 0.03104617 0 -0.0217608 -00.22 0.8084964 -0 -0.0346157 0 -0.0399996 00.24 0.67546318 -0 -0.0881853 -0 -0.0214629 00.26 0.51550137 -0 -0.1109493 -0 0.01680668 00.28 0.33498815 -0 -0.0949554 -0 0.03962429 -00.3 0.14112001 -0 -0.0457909 -0 0.02601151 -00.32 -0.0583741 0 0.01936964 0 -0.0115161 00.34 -0.2555411 0 0.07776385 0 -0.0384559 00.36 -0.4425204 0 0.10899291 0 -0.0300395 00.38 -0.6118579 0 0.10214761 0 0.00599509 -00.4 -0.7568025 0 0.05961921 -0 0.03651781 -00.42 -0.8715758 0 -0.0037359 -0 0.03346623 00.44 -0.9516021 0 -0.0657859 -0 -0.0003541 0

-1.5

-1

-0.5

0

0.5

1

1.5

0 0.5 1 1.5 2 2.5

Page 24: Musical Sounds Physical Science101 Chapter twenty Amanda Hyer.

Fourier (1,0)Fourier (1,0)Any periodic signal can be made up from a sum of harmonic waves (sine waves).

0 0 0 0 0 0 00.02 0.19866933 0 0 0 0 00.04 0.38941834 0 0 0 0 00.06 0.56464247 0 0 0 0 -00.08 0.71735609 0 0 -0 -0 -00.1 0.84147098 0 0 -0 -0 -00.12 0.93203909 0 -0 -0 -0 00.14 0.98544973 0 -0 -0 0 00.16 0.9995736 -0 -0 0 0 -00.18 0.97384763 -0 -0 0 0 -00.2 0.90929743 -0 -0 0 -0 -00.22 0.8084964 -0 0 0 -0 00.24 0.67546318 -0 0 -0 -0 00.26 0.51550137 -0 0 -0 0 00.28 0.33498815 -0 0 -0 0 -00.3 0.14112001 -0 0 -0 0 -00.32 -0.0583741 0 -0 0 -0 00.34 -0.2555411 0 -0 0 -0 00.36 -0.4425204 0 -0 0 -0 00.38 -0.6118579 0 -0 0 0 -00.4 -0.7568025 0 -0 -0 0 -00.42 -0.8715758 0 0 -0 0 00.44 -0.9516021 0 0 -0 -0 0

-1.5

-1

-0.5

0

0.5

1

1.5

0 0.5 1 1.5 2 2.5

Page 25: Musical Sounds Physical Science101 Chapter twenty Amanda Hyer.

Fourier (1,0, (1/3))Fourier (1,0, (1/3))Any periodic signal can be made up from a sum of harmonic waves (sine waves).

0 0 0 0 0 0 00.02 0.19866933 0 0.18821416 0 0 00.04 0.38941834 0 0.3106797 0 0 00.06 0.56464247 0 0.32461588 0 0 -00.08 0.71735609 0 0.22515439 -0 -0 -00.1 0.84147098 0 0.04704 -0 -0 -00.12 0.93203909 0 -0.1475068 -0 -0 00.14 0.98544973 0 -0.2905253 -0 0 00.16 0.9995736 -0 -0.3320549 0 0 -00.18 0.97384763 -0 -0.2575882 0 0 -00.2 0.90929743 -0 -0.0931385 0 -0 -00.22 0.8084964 -0 0.10384712 0 -0 00.24 0.67546318 -0 0.26455595 -0 -0 00.26 0.51550137 -0 0.33284778 -0 0 00.28 0.33498815 -0 0.2848663 -0 0 -00.3 0.14112001 -0 0.13737283 -0 0 -00.32 -0.0583741 0 -0.0581089 0 -0 00.34 -0.2555411 0 -0.2332916 0 -0 00.36 -0.4425204 0 -0.3269787 0 -0 00.38 -0.6118579 0 -0.3064428 0 0 -00.4 -0.7568025 0 -0.1788576 -0 0 -00.42 -0.8715758 0 0.01120768 -0 0 00.44 -0.9516021 0 0.19735784 -0 -0 0

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Page 26: Musical Sounds Physical Science101 Chapter twenty Amanda Hyer.

Fourier (1,0,1/3,0,1/5)Fourier (1,0,1/3,0,1/5)Any periodic signal can be made up from a sum of harmonic waves (sine waves).

0 0 0 0 0 0 00.02 0.19866933 0 0.18821416 0 0.1682942 00.04 0.38941834 0 0.3106797 0 0.18185949 00.06 0.56464247 0 0.32461588 0 0.028224 -00.08 0.71735609 0 0.22515439 -0 -0.1513605 -00.1 0.84147098 0 0.04704 -0 -0.1917849 -00.12 0.93203909 0 -0.1475068 -0 -0.0558831 00.14 0.98544973 0 -0.2905253 -0 0.13139732 00.16 0.9995736 -0 -0.3320549 0 0.19787165 -00.18 0.97384763 -0 -0.2575882 0 0.0824237 -00.2 0.90929743 -0 -0.0931385 0 -0.1088042 -00.22 0.8084964 -0 0.10384712 0 -0.199998 00.24 0.67546318 -0 0.26455595 -0 -0.1073146 00.26 0.51550137 -0 0.33284778 -0 0.08403341 00.28 0.33498815 -0 0.2848663 -0 0.19812147 -00.3 0.14112001 -0 0.13737283 -0 0.13005757 -00.32 -0.0583741 0 -0.0581089 0 -0.0575807 00.34 -0.2555411 0 -0.2332916 0 -0.1922795 00.36 -0.4425204 0 -0.3269787 0 -0.1501974 00.38 -0.6118579 0 -0.3064428 0 0.02997544 -00.4 -0.7568025 0 -0.1788576 -0 0.18258905 -00.42 -0.8715758 0 0.01120768 -0 0.16733113 00.44 -0.9516021 0 0.19735784 -0 -0.0017703 0

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Page 27: Musical Sounds Physical Science101 Chapter twenty Amanda Hyer.

Fourier (1,0,1/3,0,1/5,0,1/7)Fourier (1,0,1/3,0,1/5,0,1/7)Any periodic signal can be made up from a sum of harmonic waves (sine waves).

0 0 0 0 0 0 00.02 0.19866933 0 0.18821416 0 0.1682942 00.04 0.38941834 0 0.3106797 0 0.18185949 00.06 0.56464247 0 0.32461588 0 0.028224 -00.08 0.71735609 0 0.22515439 -0 -0.1513605 -00.1 0.84147098 0 0.04704 -0 -0.1917849 -00.12 0.93203909 0 -0.1475068 -0 -0.0558831 00.14 0.98544973 0 -0.2905253 -0 0.13139732 00.16 0.9995736 -0 -0.3320549 0 0.19787165 -00.18 0.97384763 -0 -0.2575882 0 0.0824237 -00.2 0.90929743 -0 -0.0931385 0 -0.1088042 -00.22 0.8084964 -0 0.10384712 0 -0.199998 00.24 0.67546318 -0 0.26455595 -0 -0.1073146 00.26 0.51550137 -0 0.33284778 -0 0.08403341 00.28 0.33498815 -0 0.2848663 -0 0.19812147 -00.3 0.14112001 -0 0.13737283 -0 0.13005757 -00.32 -0.0583741 0 -0.0581089 0 -0.0575807 00.34 -0.2555411 0 -0.2332916 0 -0.1922795 00.36 -0.4425204 0 -0.3269787 0 -0.1501974 00.38 -0.6118579 0 -0.3064428 0 0.02997544 -00.4 -0.7568025 0 -0.1788576 -0 0.18258905 -00.42 -0.8715758 0 0.01120768 -0 0.16733113 00.44 -0.9516021 0 0.19735784 -0 -0.0017703 0

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Page 28: Musical Sounds Physical Science101 Chapter twenty Amanda Hyer.

Compact DiscsCompact Discsbinary numbers 00 001 110 211 3100 4=22

101 510000 16=24

11111111 255

Page 29: Musical Sounds Physical Science101 Chapter twenty Amanda Hyer.

Compact DiscsCompact Discs0 0 0 0 0 0 0

0.02 0.19866933 0.15576734 0.22585699 0.07173561 0 00.04 0.38941834 0.28694244 0.37281563 0.09995736 0 00.06 0.56464247 0.37281563 0.38953905 0.06754632 0 -00.08 0.71735609 0.39982944 0.27018527 -0.0058374 -0 -00.1 0.84147098 0.36371897 0.056448 -0.0756802 -0 -00.12 0.93203909 0.27018527 -0.1770082 -0.0996165 -0 00.14 0.98544973 0.13399526 -0.3486303 -0.0631267 0 00.16 0.9995736 -0.0233497 -0.3984658 0.01165492 0 -00.18 0.97384763 -0.1770082 -0.3091058 0.07936679 0 -00.2 0.90929743 -0.302721 -0.1117662 0.09893582 -0 -00.22 0.8084964 -0.3806408 0.12461655 0.05849172 -0 00.24 0.67546318 -0.3984658 0.31746715 -0.0174327 -0 00.26 0.51550137 -0.3533819 0.39941734 -0.0827826 0 00.28 0.33498815 -0.2525067 0.34183956 -0.0979178 0 -00.3 0.14112001 -0.1117662 0.16484739 -0.0536573 0 -00.32 -0.0583741 0.04661968 -0.0697307 0.02315098 -0 00.34 -0.2555411 0.19764534 -0.2799499 0.08591618 -0 00.36 -0.4425204 0.31746715 -0.3923745 0.09656578 -0 00.38 -0.6118579 0.38716787 -0.3677314 0.04863987 0 -00.4 -0.7568025 0.3957433 -0.2146292 -0.0287903 0 -00.42 -0.8715758 0.34183956 0.01344922 -0.0887567 0 00.44 -0.9516021 0.23396688 0.23682941 -0.0948844 -0 0

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Sample rate of 44,100 bytes per secondThis gives 0 to 10,000 Hz frequencies