Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
36 Cards in this Set
- Front
- Back
|
What is a pure tone? |
Composed of one single frequency. A simple sound. |
|
|
What is a complex sound? |
A sound made up of more than one frequency. |
|
|
What is amplitude? |
The degree of displacement of air particles. |
|
|
What does amplitude determine? |
INTENSITY |
|
|
What is the objective/measurable scientific term used for the subjective/perceptual loudness? |
Intensity |
|
|
What is frequency? |
The objective measure if # of cycles/time. |
|
|
The perceptual correlate of frequency is _________. |
Pitch |
|
|
In what unit is frequency/pitch measured? |
Hz |
|
|
Hz means |
# of cycles per second. |
|
|
Low frequencies have ______wavelengths. High frequencies have _______wavelengths. |
Longer Shorter |
|
|
The length of a sound wave is the __________ . |
Wavelength |
|
|
__________wavelengths are less able to travel around surfaces and more likely to be ________.
|
Shorter Missed |
|
|
Why is the dB named as such? |
After Alexander Graham Bell |
|
|
1/10 of a Bel= |
1 dB |
|
|
Power and Pressure are 2 ways ______can be measured. |
Sound |
|
|
What is the reference for measuring sound in pressure? |
.0002 dynes/cm2 |
|
|
Approximately the smallest amount of sound that will cause the ear to vibrate is: |
.0002 dynes/cm2 |
|
|
Unit in which sound power is measured: |
Watts |
|
|
Reference for power measurements: |
10-16 watts/cm2 |
|
|
Pressure measurements are recorded as |
SPL (Sound pressure level) |
|
|
Power measurements are recorded as |
IL (Intensity level) |
|
|
5 aspects of the dB: Hint: RL NRM |
1. a Ratio 2. Logarithmic 3. Nonlinear 4. Relative 5. May be expressed in terms of various references which must be specified. |
|
|
The Zero on an audiogram is a _____ _____. |
Reference point |
|
|
Reason for the audiometric zero: |
Because SPL's represented differ at various frequencies, we call those values zero. This is because the human ear is not equally sensitive at all frequencies. |
|
|
True or False: On an audiogram, zero is the absence of sound. |
False. It refers to the "normal" values which are different at each frequency. |
|
|
On an audiogram, ______is in tge x axis. |
Frequency |
|
|
The y axis on an audiogram represents _____. |
Intensity |
|
|
The lowest level a sound is perceived 50% of the time= |
Threshold |
|
|
Left ear is represented by _____. |
X |
|
|
The right ear is represented by |
O |
|
|
Quiz The psychological correlate of intensity is |
Loudness |
|
|
What scale to we use to measure hearing? |
HL |
|
|
Quiz What does the zero on an audiogram represent? |
The normal SPL at which one hearsay a particular frequency. |
|
|
Quiz What is the range of moderate hearing loss? |
41-55 dB |
|
|
Multiple choice: X and 0 are the symbols for which type of threshold? A. Air conduction B. Bone conduction |
A |
|
|
Audiogram hearing loss ranges |
Back (Definition) |
