music tech comp 4 as

Question 1

XLR CABLE USE

Answer 1

used for microphones, mixers, amplifiers, soundboards

Question 2

XLR BALANCED

Answer 2

XLR is balanced meaning it cancels out noise picked up by the cable run

Question 3

(tip sleeve) TS JACK CABLE - how many wires, unbalanced + use

Answer 3

2 wires ground and hot, unbalanced, used for electric guitar and mono + unbalanced signals

Question 4

( tip ring sleeve) TRS JACK CABLE - how many wires, balanced or stereo + use

Answer 4

3 wires, ground hot and cold. can be used as a balanced cable or a stereo connection

Question 5

TRS CABLE USE

Answer 5

affix balanced equipment

if equipment is unbalanced and a TRS is used you will not get a balanced signal, combining left and right mono channels

Question 6

WHAT HAPPENS TO A SOUND WHEN TRAVELLING THROUGH A BALANCED CABLE

Answer 6

• balanced cable contains 3 connections, hot + cold - and ground
• cold signal is polarity inverted version of that signal
• when signals reach destination the cold signals polarity inverts again
• polarity of both signals are the same, but the noise polarity is the opposite in the hot and cold signals
• the combination of the signals cancels out the noise and makes the signal twice as lound

Question 7

MODULATION DEFINITION

Answer 7

something that changes the original sound or signal over time. Modulating a sound can add a sense of movement, add or change dimension, or create depth.

Question 8

what does LFO stand for

Answer 8

Low frequency oscillator

Question 9

what are the 3 factors of LFO

Answer 9

RATE - at which speed the modulation takes place e.g. 1/8 1/16 etc can be synced to bpm
DEPTH - how much the modulation affect the assigned element of the synthesiser
SHAPE - type of waveform used to modulate

Question 10

How do synths use LFOs

Answer 10

LFOs are used to control different modules

Question 11

DEFINITION OF TREMOLO

Answer 11

an effect that is created through modulation of volume

Question 12

DEFINITION OF VIBRATO

Answer 12

an effect created through modulation of pitch

Question 13

what is a HAMMOND ROTATING (Leslie speaker)

Answer 13

the Hammond rotating Leslie speaker is a combined amplifier and speaker that projects the signal of an electronic instrument and modifies the sound

Question 14

when was the HAMMOND ROTATING (Leslie speaker) created

Answer 14

First one was created in 1941, Leslie should his business to BCS who then sold it to hammond in 1965

Question 15

WHY WAS THE HAMMOND ROTATING (Leslie speaker) created ?

Answer 15

created to make the Hammond organ sound like a pipe or theatre organ

Question 16

WHAT MICS DOES THE HAMMOND ROTATING (Leslie speaker) HAVE ?

Answer 16

• top mic. cardoid (condenser)

- bottom mic figure of 8 (ribbon)

Question 17

HOW DOES THE HAMMOND ROTATING (Leslie speaker) WORK ?

Answer 17

has an external switch / pedal that can alternate between a slow and fast speed setting. this creates tremolo

• the tremolo is created by a baffle chamber rotating in the front of the loud speakers.

Question 18

HOW TO RECORD A HAMMOND ROTATING (Leslie speaker) + difficulties

Answer 18

HOW

use mid side recording technique

• to capture the stereo width of the tremolo point the mics at the top of the speaker

DIFFiCULTIES

mid side recording technique could create difficulties as both mics are recording the same signal,

this could encounter phase issues
signals cancel out each other - when signal 1 is inverted in polarity and both signals are 180 degrees out of phase with each other this happens