Term
| What is the name for the increase and decrease of air pressure created by a sound wave? |
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Definition
| Compression and Rarefaction |
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Term
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Definition
| Human perception of frequency |
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Term
| What are the 3 thresholds on a Log Curve? |
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Definition
| Threshold of hearing, feeling and pain. |
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Term
| What is the decibel formula? |
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Definition
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Term
| Know Sound Pressure Level Chart |
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Definition
Threshold of feeling=120dB
Threshold of pain= 140dB
Threshold of hearing= 0dB |
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Term
| What are the 3 parts of the ear? |
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Definition
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Term
| Name the 3 parts of the Outer ear |
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Definition
Pinna-sound collection
Ear Canal-sound energy
Ear drum-converts spl into movement |
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Term
| Name the 3 parts of the middle ear |
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Definition
| Hammer, anvil, and stirrup or Malleus, Incus and stapes. |
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Term
| What is in the inner ear? |
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Definition
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Term
| What are the 2 types of hearing loss? |
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Definition
Threshold shift= exposure to SPL
Tinnitus=ringing in ears |
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Term
| What is the equal loudness principle? |
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Definition
| Humans don't hear all frequencies the same |
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Term
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Definition
| Loud sounds mask soft ones and lower pitches mask higher ones. |
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Term
| What's the velocity or speed of sound? |
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Definition
| 1130ft/sec but varies with temp |
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Term
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Definition
| the distance a sound wave travels to complete one cycle. |
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Term
| what is acoustical phase? |
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Definition
| Time relationship between 2 or more waves ata a given point in there cycles.Expressed in degrees. |
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Term
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Definition
| The tone Quality, or tone color of a sound. |
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Term
| What is a sound envelope? |
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Definition
| The change in loudness over time. Attack, Decay, Sustain and Release of loudness. |
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Term
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Definition
| The property that restricts the flow of A/C. |
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Term
| What is Temporary Threshold Shift? |
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Definition
| A reversible desensitization in hearing caused by exposure to loud sound for a few hours. |
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Term
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Definition
| The science of a sound wave's behaviour |
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Term
| What is the study that deals with the human perception of sound? |
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Definition
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Term
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Definition
| the process the brain uses to place sounds in a 3-D field. |
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Term
| What are the 3 stages a sound wave goes through when we percieve it? |
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Definition
| Direct, Early, and Reverberant |
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Term
| Explain Absorption and Reflection |
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Definition
| Properties of materials that are either highly reflective or highly absorbent to sound. |
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Term
| How much sound a material will reflect is expressed as____. |
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Definition
| Sound Absorption Coefficient |
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Term
| What is it called when a sound spreads or bends around a surface? |
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Definition
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Term
| When you use various acoustic materials and techniques, the goal is to create ____. |
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Definition
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Term
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Definition
| Where sound waves either reinforce, or cancel each other. |
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Term
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Definition
| Converting one form of energy to another. |
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Term
| Microphones convert ___ energy into ___ energy. |
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Definition
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Term
| Moving Coil, Ribbon Type, Condensor, Carbon Condensor are types of ___. |
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Definition
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Term
| What is a mic's pick up pattern? |
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Definition
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Term
| Sound level necessary to cause a mic to distort is called? |
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Definition
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