whether or not the fundamental is actually present.

Transcription

1 1) Which of the following uses a computer CPU to combine various pure tones to generate interesting sounds or music? 1) _ A) MIDI standard. B) colored-noise generator, C) white-noise generator, D) digital synthesizer, E) low-frequency control oscillator, 2) Which of the following is a device that generates complex periodic waveforms by combining pure waves whose frequencies are integer multiples of a fundamental frequency? 2) _ A) Fourier synthesizer, B) phase analyzer, C) Fourier analyzer, D) More than one of these 3) A common hearing disorder called tinnitus is associated with which of the following? 3) _ A) permanent loss, B) audiogram. C) ringing in the ear, D) temporary threshold shifts, E) cochlear implants, 4) Which of the following Fourier spectra most closely resembles that of a square wave? A) B) C) D) E) - 1-4) _ 5) Which of the following wave forms contains only the odd harmonics of its fundamental frequency with slowly decreasing amplitudes? 5) _ A) triangular, B) sawtooth, C) sine, D) square, E) pulse train. 6) Which are true? 6) _ A) More than one of these. B) Any wave containing harmonics of some fundamental frequency will repeat itself periodically. C) A wave containing harmonics of some fundamental frequency will have a tone quality independent of whether or not the fundamental is actually present. D) A wave containing harmonics of some fundamental frequency will always be perceived to have a pitch equal

2 to that of the lowest harmonic that is actually present. 7) Which of the following is a very economical synthesizer that includes four independent morphable sound sources controlled by a graphical interface? 7) _ A) Finale and Sibelius, B) MIDI lab, C) VirSyn CUBE Software Synthesizer, D) MIDI standard, E) Yamaha WX5 Wind MIDI Controller. 8) Which of the following is snail-shaped object that contains the audio nerve sensors of the ear? 8) _ A) auditory canal, B) ear drum, C) pinna, D) cochlea. E) emicircular canals, 9) Which of the following constitutes the audio and control components used to generate the output of a synthesized musical sound? 9) _ A) signals, B) envelope generator. C) VCO, D) VCA, E) sample and hold, 10) Which of the following sound intensity levels corresponds to the limit of hearing? 10) A) 0 db, B) 60 db, C) 90 db, D) 30 db, E) 120 db. 11) Which of the following produces a distortion of a signal transmitted over a radio wave? 11) A) analog synthesizers, B) overmodulation, C) carrier D) digital synthesizers, E) modulation, 12) Which of the following is used to connect two or more digital synthesizers so that they work together properly? 12) A) digital computer, B) analog-to-digital converter, C) analog computer. D) digital-to-analog converter, E) Musical Instrument Digital Interface, 13) Which of the following devices would be most useful in teaching a deaf person to speak legibly? 13) - 2 -

3 A) audiology clinic, B) computerized speech laboratory, C) voice-programmed cell-phones, D) audio spectrogram E) language-translation devices 14) Which of the following refers to the sound of s or z? 14) A) sibilant, B) continuant sound, C) plosive sound, D) vowel sound, 15) Which of the following is most important in determining the direction of sound when the same sound is coming from numerous speakers at various distances such as throughout a shopping mall? 15) A) intensity difference, B) reflections in the pinna, C) phase or time difference, D) precedence effect, 16) Which of the following musical instruments produces tones that contain harmonic components? 16) A) violin, B) clarinet, C) recorder, D) krummhorn, E) All of these. 17) Which of the following produce a noticeable effect upon the timbre of a musical tone? 17) A) phases of the component harmonics, B) More than one of these. C) number of component harmonics, D) relative amplitude of component harmonics, 18) Which of the following is located below the lungs? 18) A) epiglottis. B) trachea, C) thyroid cartilage, D) esophagus, E) diaphram, 19) An envelope generator uses which of the following to terminate a prolonged note? 19) A) attack, B) release, - 3 -

4 C) decay, D) sustain,. 20) Which of the following is used to produce rich tones through a combination of pure tones with frequencies integer multiples of a fundamental frequency? 20) A) Fourier synthesis, B) Fourier series, C) Fourier analysis, D) Fourier transform. E) Fourier theorem, 21) Which of the following sounds generally contain a large number of large-amplitude harmonics in their Fourier spectrum? 21) A) hollow or woody, B) rich or raspy, C) pure or plane, D) More than one of these. 22) Which of the following cannot be sounded continuously? 22) A) Sibilant sounds B) plosive consonants, C) continuant sounds, D) More than one of these. 23) Which are true? 23) A) Sound spectrograms are used in other fields besides those associated with voice and music analysis. B) Computerized speech laboratories enable even profoundly deaf people to learn to speak understandably. C) ) Voice recognition software allows people today to control various electronic devices with simple voice commands D) Two of these. E) Three of these. 24) Which of the following persons studied the various patterns of vibration of the air columns inside a tube by sprinkling dust inside the tube? 24) A) Jean Baptiste Joseph Fourier, B) Marin Mersenne, C) Ernst Florens Friedrich Chladni, D) August Adolph Kundt, 25) Which of the following is the approximate frequency of the AM radio-frequency band? 25) A) about 100 MHz, B) above 400 MHz

5 C) 20 Hz-20 khz, D) 450 Hz khz, E) 0 25 Hz 26) Which of the following filters stops the high- and mid-frequency noise in a signal? 26) A) band-pass filter, B) high-pass filter, C) low-pass filter, D) notch filter, E) tracking filter. 27) Which of the following uses one wave to turn another wave on and off? 27) A) amplitude modulation, B) frequency modulation, C) pulse-width modulation. D) simple addition, E) gating, 28) Which of the following is used by modern voice command devices? 28) A) Fourier spectrum. B) crickets, C) spectrogram, D) profoundly deaf, E) pattern recognition, 29) Which of the following allows a musician to combine the signals from various sources together? 29) A) inharmonicities of the overtones, B) touch-sensitive keys, C) mixer. D) digital sampler, E) professional electronic music laboratory, ( 30) Which of the following emphasizes or increases the amplitudes of the harmonics that lie within a certain frequency region for a particular musical instrument? 30) A) vibrato, B) formants, C) chorus effect. D) transients, E) inharmonicities, - 5 -