1CT 3.1.1The following sound could be classified as…i. Originalii. Naturaliii. Transienta) i. onlyb) ii. onlyc) i. and ii.d) i.,ii., and iii.e) i., ii., and iv.Bird chirpOboeCT 3.1.2The following instrument could be classified as?a) Percussionsb) Stringsc) Windsd) It deserves its own classificationbellsCT 3.2.1Which of the following is generally acharacteristic of percussion instruments?a) The sound does produce a clear sensationof pitchb) The larger the amplitude of the vibrationsthe louder the soundc) The larger the surface area of the objectthe softer the soundd) The sound produced is transiente) More than one of theseCT 3.2.2What happens to the energy that was originallypresent in the vibration on a percussioninstrument?a) It all turns to heatb) It turns to a combination of heat and soundc) It is transferred into pure potential energyand is then able to dissipated) The force of gravity cancels out all theenergye) There is no energy present when an objectvibrates steadily2CT 3.2.3This is a picture of the Marimba:What is the importance of the symmetry of thepipes?a) To get a full range of notesb) To complete the resonancec) To improve and clarify the soundd) Aestheticse) Some other reasonCT 3.2.4If I double the surface area of a percussioninstrument, what happens to the pitch?a) It gets higherb) It gets lowerc) It remains the samed) Not enough informationWhat happens to the loudness?a) It increasesb) It decreasesc) It remains the samed) Not enough informationCT 3.2.5Will the sound produced by a tuning fork diefaster if I hold it close to the microphone?a) Yesb) Noc) Not enough informationWhat if I touch it to this desk?CT 3.3.1aWhich lasts longer, the vibration of astring on an electric guitar, or on anacoustic guitar?(Assume the same string, plucked thesame)A) Electric guitar strings vibratelongerB) Acoustic guitar strings vibratelongerC) Both should vibrate the sameD) ???3CT 3.3.2If I shorten the string of this instrument whathappens?a) The pitch goes upb) The pitch goes downc) The sound gets louderd) The sound gets quietere) More than one of theseWhat if I increase the tension?CT 3.4.2What is the function of finger holes in a flute?a) To create an edgetoneb) To shorten or lengthen the pipec) Emphasizes the affects of the reedd) Mostly aesthetice) More than one of theseCT 3.4.3aHow do you raise the pitch of a stringinstrument by exactly one octave?a) Put your finger down exactly halfwayalong the stringb) Put your finger down somewhere elsec) Increase the tension by a factor of 2d) More than one of theseDoes this same idea work for percussion instruments (like a drum head?)Freq (SHM) = const * √ (K/mass) λ * freq = speed of wave = const* (√ Tension/mass)CT 3.4.3bHow do you raise the pitch of a wind instrumentby exactly one octave?a) Halve the effective length of the tubeb) Change the length, but not by 1/2 (!)c) Halve the diameter of the tubed) Blow half as harde) More than one of these4CT 3.4.3If we halve the length of a tube in a windinstrument what will happen?a) The period is halvedb) The frequency is doubledc) Raises the pitch one octaved) Both a and be) a, b, and cCT 3.4.xf * λ = speedIf “f” refers to the vibrationalfrequency of the string, and λ isthe wavelength of the wave onthe string, what is the relevant“speed” for a string instrument?A) 344 m/sB) Something totally different!Same question, but referring to the Pressure vibrations inside a wind instrument?CT 3.4.4What is the function of the flared bell on the endof a recorder?a) It aids in projecting the musicb) It slows the speed of the sound beingproducedc) It lowers pitch of the noted) It is purely for visual effecte) Some other functionCT 3.3.1bThe sound that you hear from a violinis produced by:a) Mostly stringsb) Mostly the wood in the backc) Both equallyd) None of the above“You can’t fan a fire with a knitting
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