Unit 71 criteria 1
(for acoustics see unit 69 criteria 1)
Natural and artificial reverberation-Natural reverberation is when when a room naturally echos back because every room
reflection-This is when sound waves bounce off of a material for example glass and wood.
absorption-This is when the sound waves with less energy are simply caught in a absorbing material or eventually just lose energy completely.for example blacks are a great absorption material.
angle of incidence- The angle of incidence is where the sound wave hits an objects and what angle it bounces off of it.
Sound waves have a +/- which are the air particles are pushed in and out by the speaker i.e. compacting then dispersing.This is measured in SPL(sound pressure level) DB(decibels) DBfs (full scale-volume).frequency is the measurement of pitch which is the level of the note e.g. high or low.Frequency is measured in hertz which is how many times the wave reaches from 0 to + then back down to - per second.ADSR= attack,decay,sustain and release which is found withing every wave.
For everyday use we have two speakers up in the air in the center of the room two subs underneath the seating bank and two monitors in front of the seating bank.
