Term
| What is the purpose of a sound system? |
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Definition
1. Process electrical signals using mixers and other signal processing devices.
2. Amplify and convert electrical signals back in to acoustical energy.
Also:
1) to help people hear something better
2)to make sound louder for artistic reasons
3)to enable people to hear sound in remote locations |
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Term
| What is live sound reinforcement? |
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Definition
| the technique of amplifying certain acoustic events, so that a audience can here them more clearly. |
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Term
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Definition
| only certain sounds are amplified if there natural acoustic volume is to low to be heard. This method is usually used in smaller venues. vocals, kick/mic maybe hi hat |
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Term
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Definition
| :When every acoustic event is amplified. This method is used in larger venues and has some similarities to working in a recording studio. |
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Term
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Definition
| Series of echoes so closely spaced that they cannot be distinguished, sounding instead like a continuous decay following the initial sound. |
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Term
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Definition
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Term
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Definition
| a range which spans roughly ten octaves, or doublings of frequency |
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Term
| The audio spectrum is divided into a span of 3 decades, which are |
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Definition
| 20hz-200hz, 200hz-2khz, 2khz-20khz. This ratio is 10:1. |
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Term
| When does feedback occur? |
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Definition
| when the signal from the speaker to the mic is equal or greater than the performer to the mic (i dont really understand this but it is what the manual says so I guess it could be what the test question says). Really, feedback occurs when the signal flowing through the mic and coming out through the speakers travels back through the same mic, causing a feedback loop. There are many different reasons it feeds-back at a certain frequency- including microphone resonance, the distance between the mic and speaker, the acoustics of the room, etc. |
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Term
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Definition
1) Air pressure or Velocity sensitive microphones- converts sound waves traveling in the air into a audio signal traveling thru the mic cable.
2) Contact Pickup- converts sound waves in a dense medium (wood, metal) into a audio signal. Sometimes used on acoustic instruments such as guitar, mandolin, violin. Usually of the crystal type, occasionally capacitive.
3) Magnetic Pickup- converts fluctuating waves of induced magnetism into a audio signal. found on electric stringed instruments. |
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Term
| Common Output transducers |
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Definition
woofer loudspeakers
midrange loudspeaker
tweeter
full-range loudspeaker
subwoofer
super tweeters (usually compression drivers)
monitors
headphones |
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