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Comm Diss 311-page3

Comm Diss 311-page3 - 1., pressure 2. 3. 4. waveistraveling...

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Unformatted text preview: CommDis311TrueFalsePracticeTestforExam1. 1.Allotherthingsbeingequal,higherdensityofmoleculesisassociatedwithhigher pressure. 2.Thehighpressurephaseofawaveformistherarefactionphase. 3.Thelowpressurephaseofawaveformisknownasthespectralphase. 4.Themoleculesofairmovebackandforthinthesamedirectionthatthesound waveistraveling. 5.Themoleculesofairtravelfromthesourceofthesoundtothereceiverofsound. 6.Soundtravelsfasterthanairthanitdoesinsolids. 7.Aplotofamplitudeovertimeisknownasawaveform. 8.Aplotoftheamplitudeasfrequencyisknownastheamplitudespectrum. 9.Anysoundwaveformcanbecomposedbyaddingtrianglewavestogether. 10.Thebreakingdownofasinewaveintoitscomponentsinewavesiscalled Fourieranalysis. 11.Aplotofstartingphaseasafunctionoffrequencyiscalledthephasespectrum. 12.Thepeakamplitudeofawaveformisonefourthofthepeaktopeakamplitude. 13.Thermsamplitudestandsforrootmeansquare. 14.Thermsamplitudeofasinewaveis.707xthepeakamplitude. 15.Thepeakamplitudeofasinewaveissquareroot(2)xthermsamplitude. 16.Theamplitudespectrumofasinewaveofreasonabledurationisasingle verticalline. 17.Thefrequencyofasinewavehavinga2msecperiodis400Hz. 18.Thefrequencyofasinewavewitha1msecperiodis10,000Hz. 19.Theperiodofasinewavewithafrequencyof1000Hzis1msec. ...
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  • Fall '11
  • STAFF
  • CommDis311TrueFalsePracticeTestforExam1. 1.Allotherthingsbeingequal,higherdensityofmoleculesisassociatedwithhigher pressure, 3.Thelowpressurephaseofawaveformisknownasthespectralphase. 4.Themoleculesofairmovebackandforthinthesamedirectionthatthesound waveistraveling, 2.Thehighpressurephaseofawaveformistherarefactionphase. 3.Thelowpressurephaseofawaveformisknownasthespectralphase. 4.Themoleculesofairmovebackandforthinthesamedirectionthatthesound waveistraveling, 7.Aplotofamplitudeovertimeisknownasawaveform. 8.Aplotoftheamplitudeasfrequencyisknownastheamplitudespectrum. 9.Anysoundwaveformcanbecomposedbyaddingtrianglewavestogether., Fourieranalysis. 11.Aplotofstartingphaseasafunctionoffrequencyiscalledthephasespectrum. 12.Thepeakamplitudeofawaveformisonefourthofthepeaktopeakamplitude., 13.Thermsamplitudestandsforrootmeansquare. 14.Thermsamplitudeofasinewaveis.707xthepeakamplitude. 15.Thepeakamplitudeofasinewaveissquareroot

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