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Yamaha%20M7CL

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... . 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: ... – PowerPoint PPT presentation

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Title: Yamaha%20M7CL


1
Yamaha M7CL
Cenralogic Pad
Channel Select and On/Off
B
E
F
Mix
Scene Record and Recall
G
Parametric EQ
I
H
C
A
Cenralogic Pad Channel Control
D
Stereo IN
Channel Section
Master Faders
2
(No Transcript)
3
M7CL
4
(No Transcript)
5
Mix/Matrix
Touch Pad
Master EQ
Centralogic Pad
Encoders
Channel Selectors
6
M7CLWhat Controls What?
7
Audio Terminology
  • Pickup Pattern the shape of the field
    surrounding the mic
  • Cardioid is a very common pattern, also Omni and
    Super Cardioid

8
Audio Terminology
  • On and Off Axis

9
Audio Terminology
  • High Impedance/Low Impedance (HiZ/LoZ)
  • XLR

10
Audio Terminology
  • High Impedance/Low Impedance (HiZ/LoZ)
  • Tip Ring Sleeve (TRS), Phone Plug, 1/4

11
Audio Terminology
  • Speakon

12
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

13
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

14
Audio Terminology
  • Potential Acoustic Gain ( PAG) The maximum
    output of a sound system.
  • SPL Sound pressure level

15
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
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