Intro To Audio

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Intro To Audio

Intro to Audio Quiz for Eric.


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  • 1. 
    The acronym ASDR stands for:
    • A. 

      Acoustic Dynamic System Reduction

    • B. 

      Attack Dynamics Suspension Release

    • C. 

      Attack Decay Sustain Release

    • D. 

      Attack Duration Sustain Reduction

    • E. 

      Attack Dynamics Sustain Release

  • 2. 
    A reverberent field can be broken down into:
    • A. 

      Direct Sound

    • B. 

      Early Reflections

    • C. 

      Reverberation

    • D. 

      All of the Above

    • E. 

      None of the Above

  • 3. 
    Permanent hearing damage will be the result of sound pressure levels beginning at:
    • A. 

      120 dB-SPL

    • B. 

      130 dB-SPL

    • C. 

      140 dB-SPL

    • D. 

      150 dB-SPL

    • E. 

      180 dB-SPL

  • 4. 
    An anechoic chamber is a room __________________.
    • A. 

      That is very small

    • B. 

      Without sound

    • C. 

      Without reflections

    • D. 

      With delay

    • E. 

      With added range

  • 5. 
    A sine wave can be defined as:
    • A. 

      A pure tone

    • B. 

      A simple wave

    • C. 

      A frequency devoid of harmonics or overtones

    • D. 

      All of the above

    • E. 

      None of the above

  • 6. 
    Which octaves are referred to as the 'sonic horizon' or the 'sonic anchor'?
    • A. 

      1st & 2nd

    • B. 

      3rd & 4th

    • C. 

      5th, 6th, and 7th

    • D. 

      8th

    • E. 

      9th

  • 7. 
    Reflection of sound occurs when:
    • A. 

      Sound waves bend around an object

    • B. 

      Sound waves bounce off an object

    • C. 

      Sound waves change direction caused by passing through a different medium

    • D. 

      Multiple repeats of a sound become closely spaced with time creating a 'warm' sound

    • E. 

      None of the above

  • 8. 
    Wavelength is equal to
    • A. 

      Frequency/speed of sound

    • B. 

      Length x width

    • C. 

      Amplitude/frequency

    • D. 

      Frequency x speed of sound

    • E. 

      Velocity/frequency

  • 9. 
    What is the speed of sound in air at 'standard' temperature and pressure?
    • A. 

      1000 m/sec

    • B. 

      1130 ft/sec

    • C. 

      343 ft/sec

    • D. 

      1130 m/sec

    • E. 

      650 miles/h

  • 10. 
    Which frequencies are least directional?
    • A. 

      Low frequencies

    • B. 

      Low-mid frequencies

    • C. 

      Mid range frequencies

    • D. 

      High-mid frequencies

    • E. 

      High frequencies

  • 11. 
    The musical term for the doubling (or halving) of frequency is
    • A. 

      Pitch

    • B. 

      Octave

    • C. 

      Sharp

    • D. 

      Harmonic

    • E. 

      Inversion

  • 12. 
    Breaking down an acoustic waveform graphically into its frequency components is called
    • A. 

      A Fourier Series Analysis

    • B. 

      Diffusion

    • C. 

      Time delay spectronomy

    • D. 

      Rarefaction

    • E. 

      Separation

  • 13. 
    The 'time' taken for a sound wave to complete one cycle is known as the:
    • A. 

      Frequency

    • B. 

      Amplituted

    • C. 

      Peak value

    • D. 

      Wavelength

    • E. 

      Period

  • 14. 
    The ability of sound to bend around an object in its path is known as:
    • A. 

      Reverberation

    • B. 

      Diffusion

    • C. 

      Refraction

    • D. 

      Reflection

    • E. 

      Diffraction

  • 15. 
    The number of cycles per second of sound wave is expressed in
    • A. 

      Amplitude

    • B. 

      Seconds

    • C. 

      Hertz

    • D. 

      Nanowebers

    • E. 

      DB/octave

  • 16. 
    Given a graphical representation, the negative or downward part of an acoustical wave in air is called:
    • A. 

      Compression

    • B. 

      Reduction

    • C. 

      Rarefaction

    • D. 

      Amplitude

    • E. 

      Expansion

  • 17. 
    Fletcher-Munson curves are a graphical representation of:
    • A. 

      Spl

    • B. 

      Frequency response

    • C. 

      Phase angle

    • D. 

      Equal loudness

    • E. 

      Signal to noise ratio

  • 18. 
    The smallest amplitude change the ear can perceive in a complex wave when you're not expecting a change is:
    • A. 

      3 dB

    • B. 

      1 dB

    • C. 

      6 dB

    • D. 

      0 dB

    • E. 

      10 dB

  • 19. 
    Harmonics are:
    • A. 

      Floating point multiples of the fundamental frequency

    • B. 

      Only odd number multiples of the fundamental frequency

    • C. 

      Only even number multiples of the fundamental frequency

    • D. 

      Whole number multiples of the fundamental frequency

    • E. 

      Overtones that have no relation to the fundamental frequency

  • 20. 
    Which part of the body combines the signals from both ears?
    • A. 

      The outer ear

    • B. 

      The middle ear

    • C. 

      The inner ear

    • D. 

      The brain stem

    • E. 

      The brain

  • 21. 
    When a vibrating object moves inwardly, it's effect of the air molecules surrounding it is known as:
    • A. 

      Elasticity

    • B. 

      Compression

    • C. 

      Rarefaction

    • D. 

      All of the above

    • E. 

      None of the above

  • 22. 
    'Constructive interference' of sound waves that are partially out of phase is defined as
    • A. 

      Phase that cancels the sound completely

    • B. 

      Phase that increases a sound's amplitude

    • C. 

      Phase that decreases a sound's amplitude

    • D. 

      A & c

    • E. 

      None of the above

  • 23. 
    'Pitch' is defined as:
    • A. 

      The highness or lowness of a sound

    • B. 

      The loudness or softness of a sound

    • C. 

      The characteristic tonal quality of a sound

    • D. 

      The speed of a sound

    • E. 

      A sound's sonic time pattern

  • 24. 
    Interaural intensity differnces help us determine acoustic derectionality by _____________?
    • A. 

      The amount of time it takes for low frequencies to diffract around the head

    • B. 

      The amplitude differences of high frequencies between the two ears

    • C. 

      The way the Pinna will 'color' the sound of low frequencies

    • D. 

      The amplitude differences of low frequencies between the two ears

    • E. 

      None of the above

  • 25. 
    The name for the bending of a soundwave around an obstacle is known as:
    • A. 

      Resonance

    • B. 

      Refraction

    • C. 

      Diffusion

    • D. 

      Diffraction

    • E. 

      Rarefaction

  • 26. 
    A Fourier Series analysis of a square wave would indicate:
    • A. 

      Only partials and overtones

    • B. 

      Only the fundamental frequency

    • C. 

      Only even harmonics

    • D. 

      Only odd harmonics

    • E. 

      Odd and even harmonics

  • 27. 
    The 'middle ear' contains the:
    • A. 

      Tympanic membrane

    • B. 

      Hammer, anvil, and stirups

    • C. 

      Cochlea

    • D. 

      Auditory Nerve

    • E. 

      Basilar Membrane

  • 28. 
    One complete cycle of a 100Hz tone is _____ in length when traveling in air at 68 degrees.
    • A. 

      1.13 ft

    • B. 

      11.3 ft

    • C. 

      113 ft

    • D. 

      1130 ft

    • E. 

      None of the above

  • 29. 
    'Timbre' is defined as
    • A. 

      The highness or lowness of a sound

    • B. 

      The characteristic tonal quality of a sound

    • C. 

      The speed of a sound

    • D. 

      A sound's sonic time pattern

    • E. 

      A sound's changing volume and/or pitch

  • 30. 
    The 'midrange' frequencies (5th, 6th, & 7th octaves) are located between:
    • A. 

      20Hz-80Hz

    • B. 

      81Hz-320Hz

    • C. 

      2.57kHz-3.5kHz

    • D. 

      3.56kHz-5.12kHz

    • E. 

      None of the above