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Yamaha M7CL. Cenralogic Pad. Channel Select and On/Off. B. E. F. Mix. Scene Record and Recall. Parametric EQ. G. I. H. C. A. Cenralogic Pad Channel Control. D. Stereo IN. Channel Section. Master Faders. M7CL. Mix/Matrix. Touch Pad. Master EQ. Centralogic Pad. Encoders.
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Yamaha M7CL Cenralogic Pad Channel Select and On/Off B E F Mix Scene Record and Recall Parametric EQ G I H C A Cenralogic Pad Channel Control D Stereo IN Channel Section Master Faders
Mix/Matrix Touch Pad Master EQ Centralogic Pad Encoders Channel Selectors
Audio Terminology • Pickup Pattern: the shape of the field surrounding the mic • Cardioid is a very common pattern, also Omni and Super Cardioid
Audio Terminology • On and Off Axis
Audio Terminology • High Impedance/Low Impedance (HiZ/LoZ) • XLR
Audio Terminology • High Impedance/Low Impedance (HiZ/LoZ) • Tip Ring Sleeve (TRS), Phone Plug, 1/4”
Audio Terminology • Speakon
Audio Terminology • Decibel: a measurement of sound pressure. • 20dB is the threshold of hearing, 120dB is the threshold of pain • Hearing loss is the most preventable injury in technical theatre
Audio Terminology • Acoustics: The physical characteristics of any space in regard to its reaction to sound. • Critical Distance: Where an amplified sound and unamplified sound are the same level. Mic placement should not exceed 1/2 critical distance. • Floor: The ambient sound level of a space. Sound reinforcement must raise levels above the “floor” to be heard. • Frequency: The scientific name for pitch. Frequencies are sustainable and measurable sound waves. • Inverse Square Law: The sound level decreases by 6 dB every time a mics distance from a sound source is doubled. The opposite is true as well, every time the distance is halved, dB levels increase by 6dB • Level: Referring to the loudness of a system
Audio Terminology • Potential Acoustic Gain: ( PAG:) The maximum output of a sound system. • SPL: Sound pressure level
Frequency(the scientific name for pitch) • Frequencies are sustained and measurable • Frequency is measured in Hertz • More waves per second equal a higher frequency/pitch