Magnitude Flashcards
The difference between intensities of 1 watt/m2 and 10-4 w/m2, a difference of 104 or 10,000, is _________
40 dB
Doubling the intensity on a log scale means adding _________
3 dB
Doubling the amplitude or sound pressure on a log scale means adding _________
6 dB
Normal conversation is typically in the range of _________, whereas trucks, subways and motorcycles are typically in the range of ________
60 dB, 90-100 dB
the ________ is the highest distortion-free level possible for that medium
0 reference
________ denotes the threshold of hearing
0 dB
At the point of maximum displacement, the momentary velocity is ________
zero
A sound level meter’s microphone (like the eardrum) responds to ________ variations
sound pressure
SPL (Sound Pressure Level) is unweighted, and therefore is measured in ________
dB
Sound Level is ________ according to a scale such as the A scale and measured as dBA
weighted
The A scale discriminates against low frequencies below ________ only at ________
500 Hz, low levels
A temporary change of hearing sensitivity is referred to as a ________
Temporary Threshold Shift (TTS)
The ear is most sensitive in the frequency range of ________
1kHz - 4kHz
________ refers to the amplitude contour of a sound in time
Envelope
The ________ , a part of the envelope, are a key indicator of the how the source was set in motion
Attack Transients
