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57 Cards in this Set
- Front
- Back
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Transducer |
Device that changes one form of energy into another corresponding form of energy |
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Equilizer |
Device over tonal control over harmonic content |
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Compression |
sound pressure creating an area greater than normal atmospheric pressure |
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Rarefaction |
Sound pressre creating an area less than normal atmospheric pressure. |
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What device generates sine waves |
Oscillator |
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Amplitude |
Distance above or below the center line of a wave form |
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Frequency |
Rate of cycles per second |
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Whats a one word name for frequency |
Pitch |
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Wavelength |
The physical length of one cycle |
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Formula for wavelength |
V/F |
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Velocity |
Speed of sound waves in air |
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Envelope |
Graph of level vs time |
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Transient |
A level vs time graph with a high leve short duration |
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RT 60 |
Reverb time, time it takes for dB to decrease to 60 after sound source stops |
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Room musicians play in |
Studio proper |
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Room where the console a tape recorders etc are kept |
Control room |
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Name two kinds or styles of recording |
Live to two track Multitrack |
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What are the three steps to multitrackd recording in order? |
Tracking Overdubb Mixdown |
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Device that changes one form of energy into a corresponding form of energy |
Transducer |
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Three types of transducer |
Ears Mic Speakers |
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What are the three electrical levels and their volts |
Mic level - millivolts Line level - 1.2 volts Speaker level - 1-70 volts |
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Sound pressure creating an area less than normal atmospheric pressure |
Rarefaction |
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Sound pressure creating an area greater than normal atmospheric pressure |
Compression |
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How many feet per second in the speed of sound - velocity |
1139 ft / sec |
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Another word that means cycles / sec (measurement of frequency) |
Hertz |
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What type of console do you have in st28 |
API 1608 |
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What is the name of the digital multitrack recorder in st28 |
Radar 24 |
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What is the freuency response of human hearing |
20Hz - 20000Hz |
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What type of mic requires 48v dc power |
Condenser |
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Threshold of pain |
140 dB |
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Normal mixing level of dB |
85 |
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Normal level of conversation in dB |
70 |
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T or F the ear does not exhibit flatfrequebcy response |
T |
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Range of frequency that humans are most sensitive to |
1000-4000Hz |
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SPL stands for what |
Sound pressure level |
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What frequency does the ear hear less of as the spl drops |
Low |
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The equals loudness and contours wher establish by who and where and when? |
Fletcher and munson who worked for the Bell labs in 1930s & 1940s |
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Masking |
Phenomenon by which loud signals prevent the ear from hearing softer sounds |
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List two way to avoid masking during mixdown |
Equilization Panning |
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What three things need to happen to get phase cancellation |
Equal amplitude opposite polarity Same frequency |
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Four sections of the envelope |
Attack Decay Sustain Release |
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Harmonic content |
Acoustic fingerprint |
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High frequencies tend to be which polar pattern due to their shorter wavelengths |
Unidirectional |
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Low frequencies tend to be which polar pattern due to their longer wavelengths? |
Omnidirectional |
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Name two things the dB scale can be used to measure |
Voltage Power |
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Devices used for tonal cntrol over harmonic content are called? |
Equilizers |
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Name two different types of mics we commonly use |
Dynamic Condenser |
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Which type of mic doesnt require phantom power (48v dc) |
Dynamic |
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Overdubb |
Adding to original track |
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Phase |
Interaction between waves |
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Why use the 3:1 rule |
To avoid phase cancellation |
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4 most common levels of dB spl |
0 dB - threshold of hearing 70 dB - avg conversation 85 dB - best mixing volume 140 dB - threshold of pain |
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Who created dB |
Alexander gran bel |
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Headroom |
Extra room given before the recording clips |
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Masking in recording |
Mixing in instruments that have similar frequency (use eq or panning) |
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What does a compressor do |
Makes softer sounds louder w/ respect to louder sounds |
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7 waveform characteristics |
Wavelength Amplitude Velocity Envelope Phase Harmonic content Frequency |
