Live Audio

Overview

  • Audio Production & Me
  • Waves & Frequencies
  • Signals & Noise
  • Voices & Instruments

Audio Production & Me

Why?

We are a team

Waves & Frequencies

Sound:

vibrations that  travel through the air as waves

Frequency (Quality):

how fast a wave goes through one cycle (measured in Hertz [Hz])

High & Low

Human Hearing

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Frequency Spectrum

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Amplitude(Quantity)

The loudness of a sound wave. (Represented in Decibels [dB])

Quick Demo

Signal & Noise

Signal:

meaningful information that you're actually trying to detect

Noise:

the random, unwanted variation or fluctuation that interferes with the signal

Signal-Noise Ratio (S/N):

the level of a desired signal to the level of background noise

Quick Demo

Signal Chain

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Our chain

Inputs

Inputs

Stage box

Mixer

Full range speakers

Sub Woofers

Monitors

Voices & Instruments

Microphones

  • Dynamic
  • Condenser

Dynamic mic

Condenser mic

Polar Patterns

Quick Demo

Direct Injection Boxes

  • Active (has more low end. requires power)
  • Passive (warmer)

What DIs do:

  • Remove ground loops (The buzz)
  • Balancing (allows us to use better cables)
  • Level matching (Pad)

Levels

  • Mic Level
  • Line Level
  • Instrument Level
  • Speaker Level

Mic Level vs Line Level

Instrument Level

Speaker Level

Quick Demo

P.A & Speakers

The House (Public Address)

Line arrays (highs)

Full range (highs, mids and some lows)

Subwoofers

Monitors (For me)

Wedge monitors

In-ear monitors

Q & A

Thank you & Good Night

deck

By Nana GodChild Adane

deck

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