Term
| LIVE AUDIO SYSTEMS ARE OPTIMIZED FOR __________ ___________. |
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Definition
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Term
| PROGRAM SOURCES VARY IN __________, __________&__________. |
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Definition
| Voltage, Impedance & Topology (Connectors) |
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Term
| NAME THE 3 TYPES OF PROGRAM SOURCES. |
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Definition
| Microphone, Instruments, Playback |
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Term
| WHAT IS A MIXER’S MAIN JOB WITH REGARD TO PROGRAM SOURCES? |
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Definition
| To scale mic level signals to line level (+4dBu) |
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Term
| WHAT ARE 3 MAIN TYPES OF SIGNAL PROCESSING? |
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Definition
| Filtering, Delay, Dynamics |
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Term
| POST MIXER PROCESSING IS MAINLY ________________ IN NATURE. |
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Definition
| Technical (as opposed to Artistic) |
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Term
| WHERE DO WE USE “MATCHED” OR “TERMINATED” INTERFACE? |
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Definition
| Video, Wireless Antenna Systems & Long Transmissions |
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Term
| IN A ___________ AUDIO CIRCUIT, IT IS BENEFICIAL TO HAVE THE LOAD IMPEDANCE ____TIMES THE SOURCE IMPEDANCE TO INSURE EFFICIENT ________TRANSFER FROM DEVICE TO DEVICE. |
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Definition
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Term
| WHY CAN’T WE “Y” 2 OUTPUTS TO AN INPUT? |
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Definition
•Outputs will both try to drive each others low impedance causing high current to develop.
•Outputs are low impedance and meant to drive the higher impedance of the input. |
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Term
| LOUDNESS AND POWER RELATE TO THE _____ OF THE SIGNAL. |
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Definition
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Term
| CLIPPING CAUSES _________ __________ WHICH CAUSES THE SIGNAL TO SOUND BAD. |
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Definition
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Term
| WHY IS MONITORING THE PEAKS OF SIGNAL IMPORTANT? |
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Definition
| Monitoring peaks can help us avoid loudspeaker damage. |
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Term
| WHY IS MONITORING THE RMS OF SIGNAL IMPORTANT? |
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Definition
| Monitoring RMS can help us avoid loudspeaker damage. |
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Term
| DEFINE METER INTEGRATION TIME. |
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Definition
The time it takes for a meter to respond to a signal.
AKA Meter Ballistics. |
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Term
| WHAT IS THE DIFFERENCE BETWEEN A “QUASI” AND A “TRUE” PPM? |
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Definition
•A quasi-ppm has a 5-10ms integration time causing it to not display short-term peaks. A quasi-PPM will often read 8-10dB lower then a TPPM.
•True ppm (TPPM) has instant ballistics that read out any short term peaks. TPPMs are often used in the recording environment to avoid any instance of distortion. |
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Term
| WHAT IS THE MAIN DRAWBACK OF USING A PPM? |
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Definition
•A PPM cannot monitor loudness or RMS.
•Loudness and RMS affect hearing safety and potential loudspeaker damage. |
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Term
| 0 DBFS CAN BE REFERENCED TO A ______ OR A ______ WAVE. |
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Definition
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Term
| WHEN WOULD A TRUE PEAK PROGRAM METER (TPPM) BE USEFUL? |
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Definition
| •When recording to avoid short term peaks that would cause unwanted harmonic distortion. |
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Term
| WHAT IS THE RESPONSE OR INTEGRATION TIME OF A VU METER? |
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Definition
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Term
| HOW MANY VOLTS DOES 0VU EQUAL? |
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Definition
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Term
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Definition
•The difference between peak and average signal.
•Crest factor in dB=10log(peak/average)
•Heating capacity of the signal
“Area under the curve” |
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Term
| WHAT IS THE CREST FACTOR OF A SINE WAVE? |
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Definition
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Term
| WHAT IS THE DIFFERENCE BETWEEN AES PINK NOISE AND TRADITIONAL PINK NOISE? |
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Definition
•AES pink is filtered so that it has 6dBCF.
•Traditional pink noise has a crest factor of 10dB.
•All pink noise is filtered white noise and has equal energy per octave. |
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Term
| WHAT IS THE CREST FACTOR OF TYPICAL MUSIC? |
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Definition
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