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UTILITIES 3 > 01. ACOUSTICS > Flashcards

01. ACOUSTICS Flashcards

1
Q

Branch of Physics concerned with sound deals with the production, control, transmission, reception, and effects of sound.

A

ACOUSTICS

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2
Q

What are the 3 parts (or elements) of Acoustics?

A
  1. SOUND SOURCE
  2. TRANSMISSION PATH
  3. RECEIVER
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3
Q

What are the 4 types of Acoustics?

A
  1. PHYSYCO ACOUSTICS
  2. ENVIRONMENTAL ACOUSTICS
  3. ELECTRO ACOUSTICS
  4. SONICS
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4
Q

It may be defined as the technology of designing spaces, structures, and mechanical systems to meet hearing needs.

A

ARCHITECTURAL ACOUSTICS/ROOM ACOUSTICS

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5
Q

It is a physical wave or a mechanical vibration, or simply a series of pressure variations in an elastic medium.

A

SOUND

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6
Q

It is generally thought of as the ‘highness’ or ‘lowness’ of a sound

A

PITCH

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7
Q

The number of wave cycles per second that measures sound fluctuations of waves.

A

FREQUENCY

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8
Q

The distinctive quality, pitch or condition of a person’s speech produced.

A

VOICE

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9
Q

A cartilaginous structure at the top of the trachea.

A

VOICE BOX/LARYNX

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10
Q

The human ear can recognize the sounds of frequencies in the range of how many Hz?

A

20 Hz TO 20,000 Hz

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11
Q

Sounds of frequencies less than 20 Hz.

A

INFRASONIC SOUNDS

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12
Q

Sounds of frequencies greater than 20,000 Hz.

A

ULTRA SONIC SOUNDS

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13
Q

Height of sounds wave is influenced by both the frequency and timbre of a sound.

A

AMPLITUDE

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14
Q

The unique sound or tone color produced by every instrument and voice, also referred to an instrument’s color.

A

TONE/COLOUR/TIMBER

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15
Q

A unit of acoustics absorption equivalent to the absorption by a square foot of a surface that absorbs all incident sound.

A

SABIN

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16
Q

High fidelity sound-Accuracy of the sound or image of its input electronic signal.

A

HI-FI SOUND

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17
Q

A unit of subjective loudness of pure tones.

A

PHON

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18
Q

The interval between one musical pitch and another with half or double its frequency. It is the most important musical scale and referred to as the basic miracle of music.

A

OCTAVE

19
Q

A local area network that uses high frequency radio signals to transmit and receive data over distances of a few hundred feet; uses ethernet (wireless) protocol.

A

WI-FI

20
Q

Travels through gases, liquids, and solids.

A

SOUND

21
Q

Weakening in force or intensity

A

ATTENUATION

22
Q

Physics of Sound

A

ACOUSTICS

23
Q

The three major components of acoustics

A
  1. AMBIENT NOISE
  2. REVERBERATION
  3. SIGNAL TO NOISE RADIO (SNR)
24
Q

The percentage of productivity when increased if noise is controlled.

A

26%

25
Q

It is determined by how fast the sound producing objects vibrates.

A

FREQUENCY

26
Q

Basically your ear’s response to the frequency of a sound.

A

PITCH

27
Q

The loudness of a wave depends on its energy.

A

LOUDNESS

28
Q

Refers to the quality of a person’s voice.

A

TONE OF SOUND

29
Q

The three quantities of characterized sound

A
  1. PITCH
  2. QUALITY
  3. LOUDNESS
30
Q

The frequency of a sound as perceived by human ear.

A

PITCH

31
Q

A physiological sensation that depends mainly on sound pressure but also on the spectrum of the harmonics and the physical duration.

A

LOUDNESS

32
Q

A wave whose oscillations are perpendicular to the direction of the wave’s advance.

A

TRANSVERSE WAVE

33
Q

The local pressure deviation from the ambient (average or equilibrium) atmospheric pressure, caused by a sound wave.

A

SOUND PRESSURE OR ACOUSTIC PRESSURE

34
Q

The SI unit of sound pressure.

A

PASCAL (Pa)

35
Q

Also known as barometric pressure, is the pressure within atmosphere of Earth.

A

ATMOSTPHERIC PRESSURE

36
Q

Large, open-air structures constructed on the slopes of hills.

A

GREEK THEATRE BUILDINGS

37
Q

The three main elements of Greek Theatre buildings

A
  1. THE ORCHESTRA
  2. THE SKENE
  3. THE AUDIENCE
38
Q

Architecture is the coherent set of constructive, operative and decorative concepts of a structure.

A

ANCIENT ROMAN THEATER

39
Q

Unit of frequency defined as the number of complete cycles per second.

A

HERTZ (Hz)

40
Q

Used to measure sound level, but it is also widely used in electronics, signals and communication.

A

DECIBEL (dB)

41
Q

A diagram devised by Harvey Fletcher Hudson and W.A. Munson that measures the loudness and softness of a sound as it is heard by a human ear. Also known as the level of human quantity of sound.

A

FLETCHER - MUNSON CONTOURS

42
Q

When two separate sources of sound are perceived simultaneously, the perception of each is made more difficult by the presence of the other.

A

MASKING

43
Q

The exact mechanism which the binaural aspect of hearing detects direction is note entirely understood.

A

DIRECTIVITY

UTILITIES 3 (5 decks)

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