Eric - Intro To Audio - Quiz & Trivia

1. The acronym ASDR stands for:

Acoustic Dynamic System Reduction

Attack Dynamics Suspension Release

Attack Decay Sustain Release

Attack Duration Sustain Reduction

Attack Dynamics Sustain Release

2. The number of cycles per second of sound wave is expressed in

Amplitude

Seconds

Hertz

Nanowebers

DB/octave

3. Reflection of sound occurs when:

Sound waves bend around an object

Sound waves bounce off an object

Sound waves change direction caused by passing through a different medium

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

None of the above

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

1000 m/sec

1130 ft/sec

343 ft/sec

1130 m/sec

650 miles/h

5. Breaking down an acoustic waveform graphically into its frequency components is called

A Fourier Series Analysis

Diffusion

Time delay spectronomy

Rarefaction

Separation

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

3 dB

1 dB

6 dB

0 dB

10 dB

7. 'Timbre' is defined as

The highness or lowness of a sound

The characteristic tonal quality of a sound

The speed of a sound

A sound's sonic time pattern

A sound's changing volume and/or pitch

8. An anechoic chamber is a room __________________.

That is very small

Without sound

Without reflections

With delay

With added range

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

Resonance

Refraction

Diffusion

Diffraction

Rarefaction

10. A reverberent field can be broken down into:

Direct Sound

Early Reflections

Reverberation

All of the Above

None of the Above

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

Compression

Reduction

Rarefaction

Amplitude

Expansion

12. Wavelength is equal to

Frequency/speed of sound

Length x width

Amplitude/frequency

Frequency x speed of sound

Velocity/frequency

13. Which frequencies are least directional?

Low frequencies

Low-mid frequencies

Mid range frequencies

High-mid frequencies

High frequencies

14. The musical term for the doubling (or halving) of frequency is

Pitch

Octave

Sharp

Harmonic

Inversion

15. The 'middle ear' contains the:

Tympanic membrane

Hammer, anvil, and stirups

Cochlea

Auditory Nerve

Basilar Membrane

16. Harmonics are:

Floating point multiples of the fundamental frequency

Only odd number multiples of the fundamental frequency

Only even number multiples of the fundamental frequency

Whole number multiples of the fundamental frequency

Overtones that have no relation to the fundamental frequency

17. A sine wave can be defined as:

A pure tone

A simple wave

A frequency devoid of harmonics or overtones

All of the above

None of the above

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

Frequency

Amplituted

Peak value

Wavelength

Period

19. Which part of the body combines the signals from both ears?

The outer ear

The middle ear

The inner ear

The brain stem

The brain

20. 'Pitch' is defined as:

The highness or lowness of a sound

The loudness or softness of a sound

The characteristic tonal quality of a sound

The speed of a sound

A sound's sonic time pattern

21. Fletcher-Munson curves are a graphical representation of:

Spl

Frequency response

Phase angle

Equal loudness

Signal to noise ratio

22. Which octaves are referred to as the 'sonic horizon' or the 'sonic anchor'?

1st & 2nd

3rd & 4th

5th, 6th, and 7th

8th

9th

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

1.13 ft

11.3 ft

113 ft

1130 ft

None of the above

24.
'Constructive interference' of sound waves that are partially out of phase is defined as

Phase that cancels the sound completely

Phase that increases a sound's amplitude

Phase that decreases a sound's amplitude

A & c

None of the above

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

20Hz-80Hz

81Hz-320Hz

2.57kHz-3.5kHz

3.56kHz-5.12kHz

None of the above

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

Elasticity

Compression

Rarefaction

All of the above

None of the above

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

Only partials and overtones

Only the fundamental frequency

Only even harmonics

Only odd harmonics

Odd and even harmonics

28. Interaural intensity differnces help us determine acoustic derectionality by _____________?

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

The amplitude differences of high frequencies between the two ears

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

The amplitude differences of low frequencies between the two ears

None of the above