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A reads text to speech;
20 Cards in this Set
- Front
- Back
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Coefficient of Absorption: 'a'
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-
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Total Acoustical Absorption: 'A'
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sabins
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Velocity of Sound: 'c'
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ft/sec
or m/s |
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Frequency of Sound: 'f'
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Hz (cylces per second)
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Sound Intensity: 'I'
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W/cm²
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Minimum Sound Intensity Audible to the Average Human Ear: 'I₀'
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10⁻¹⁶ W/cm²
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Sound Intensity Level: 'IL'
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dB
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Noise Reduction: 'NR'
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dB
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Acoustic Power: 'P'
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W
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Distance from the Source: 'r'
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cm
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Area of Barrier or Component Between Rooms: ' S'
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ft²
or m² |
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Coefficient of Transmission: 't'
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?
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Reverberation Time: 'T'
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sec
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Transmission Loss: ' TL'
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dB
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Room Volume: ' V'
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ft³
or m³ |
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Wavelength: 'w'
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ft
or m |
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Power: 'W'
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W
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Define: Amplification
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The increased intensity of sound by mechanical or elctrical means.
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Define: Articulation index
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A measure of speech intelligibility caluated from the number of words read froma selected list that are understood by an audience. A low articulation index (less than 0.15) is desirable for speech privacy, wheras a high articulation index (above 0.6) is desired for good communication.
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Define: Attentuation
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The reduction of sound.
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