01 Frequency
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| Hierarchy of Speech Acts | show 🗑
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| show | 1. Something put into vibration
2. Something to conduct (i.e., carry or transmit) the sound vibrations
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| In order to have vibration | show 🗑
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| show | -the tendency for an object to return to its normal resting state.
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| show | -the tendency for a body at rest to remain at rest, or a body in motion to remain in motion.
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| Conductors | show 🗑
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| show | -don’t conduct sound well
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| show | Compressions & Rarefactions
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| Degree of max compression | show 🗑
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| show | 270°
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| 2 tones are presented, with identical frequency and intensity. However, they are 180 degrees out of phase. What happens? | show 🗑
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| show | A single tone with increased amplitude
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| show | -The maximum displacement during a cycle of vibration
-The point of maximum compression
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| Sound is conducted through a medium by | show 🗑
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| Rarefraction | show 🗑
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| Trough | show 🗑
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| show | peaks are point of maximum compression
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| show | The greater the compression/amplitudue, the greater the intensity.
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| We perceive intensity as | show 🗑
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| Damping | show 🗑
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| show | Pitch
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| show | Loudness
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| show | -Frequency (# of cycles, pitch) -- measured in Hertz (Hz)
-Intensity (height of wave, amplitude) -- measured in decibels (dB)
-Duration -- measured in milliseconds (ms)
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| Frequency is determined by what? | show 🗑
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| In order to have a perceptible pitch, a frequency that you can hear, there has to be... | show 🗑
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| show | A sound wave that repeats itself at regular intervals
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| show | -A sound wave that is non-repetitive, has a different rate for each cycle
-No specific frequency can be assigned to
-it has no perceptible pitch
-it is random noise
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| show | -each cycle takes 1/1000 of a second
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| show | -1/250 of a second
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| show | -The length of time it takes for a tone to complete one cycle of vibration
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| show | shorter
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| show | pull decimal to right 3 places.
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| show | =1/1000 sec
=0.001 sec
=1 ms
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| show | =1/2000
=0.0005 sec
=0.5 ms
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| What is the period of a 250 Hz tone? | show 🗑
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| What is the period of a 500 Hz tone? | show 🗑
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| show | decimal moves left 3 times
= 0.050 sec
= 1/0.05
= 20 Hz
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| What is the frequency of a tone that has a period of 5 ms? | show 🗑
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| show | =0.020 sec
=1/.02
=50 Hz
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| How to calculate frequency with a graph | show 🗑
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Created by:
aramos139
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