resonance, filters, & room acoustics

Question 1

filters

Answer 1

alters the magnitudes of the frequency components of a signal

Question 2

pass band

Answer 2

frequencies in this range are passed by the filter

Question 3

reject band

Answer 3

frequencies in the range are attenuated

reduced in amplitude

Question 4

low pass

Answer 4

starts high goes low

lets low things throughh

Question 5

high pass

Answer 5

starts low goes high

lets high things through

Question 6

band pass

Answer 6

lets specific range through

Question 7

band stop

Answer 7

lets everyhting outside of specific range through

Question 8

positive values

Answer 8

amplifying sound

Question 9

negative values

Answer 9

attenuating sound

Question 10

0

Answer 10

not changing sound

Question 11

skirt

Answer 11

attenuate more & more until blocking all of it

slope
roll-off

measured in dB/octave

Question 12

octave

Answer 12

up 1 = doubling frequency

down 1 = halving freq

Question 13

cut off frequency

Answer 13

low pass & high pass

everything after this will be attenuated or amplified

Question 14

bandwidth

Answer 14

width between 2 cutoff frequencies

typically 3dB below the center frequency

Question 15

resonant frequency

Answer 15

the frequency the object “likes” to oscillate at

same frequency regardless of how far mass is pulled

increases if stiffness increases

decreases if mass increases