10CRZ Unit 3

What is a signal flow chart?

• A diagram that shows how the signal flows from one diagram to the other

• A chart that shows pictures of signals

• A diagram that represents the path the audio signal takes from beginning (microphone) to end (speakers)

• None of the above

How might a High-Fidelity (Hi-Fi) system differ from a Public Announcement (PA) system with regard to signal flow?

• PA system is designed to amplify and project sound to large audiences, Hi-Fi systems prioritizes sound quality

• PA system is designed to produce high quality sound over a small distance, where as Hi-Fi systems prioritizes distance the sound is projected.

• PA system signal flow would be the same as a Hi-Fi system as they have the same features

• PA system signal flow includes a range of good quality speakers, but a Hi-Fi system does not.

What are the three (3) main components of a speaker driver?

• Cone

• Microphone

• Coil

• Magnet

• Fader

When more energy is fed into a speaker, it causes the diaphragm to move:

• More

• Less

• Not at all

For producing bass frequencies, we should use?

• Large speakers

• Small speakers

• Same size speakers as for high frequencies

What type of speaker does not require a power cord?

• Active

• Passive

For the following types of microphones, identify two (2) key factors and how each works: Microphone: Dynamic Microphone: Condenser

• Dynamic Key factors: Durable, handles high sound pressure levels. How it works: Uses electromagnetic induction. Condenser Key factors: Sensitive, requires external power. How it works: Uses a capacitor to convert acoustical energy into electrical energy.

• Dynamic Key factors: Fragile, requires external power. How it works: Uses a capacitor to convert acoustical energy into electrical energy. Condenser Key factors: Durable, handles high sound pressure levels. How it works: Uses electromagnetic induction.

• Dynamic Key factors: Sensitive, requires external power. How it works: Uses a capacitor to convert acoustical energy into electrical energy. Condenser Key factors: Durable, handles high sound pressure levels. How it works: Uses electromagnetic induction.

• Dynamic Key factors: Lightweight, needs batteries. How it works: Uses piezoelectric effect. Condenser Key factors: Heavy, no external power needed. How it works: Uses magnetic induction.

Label the component of the mixer desk using the following words: outputs, inputs, equalisation, fader, gain, routing, pan, auxiliaries.

• outputs, inputs, equalisation, fader, gain, routing, pan, auxiliaries (each label should be matched to the correct part of the mixer desk as per standard audio mixer layouts)

• outputs, inputs, compression, fader, gain, routing, pan, auxiliaries (replace equalisation with compression)

• outputs, inputs, equalisation, fader, gain, routing, pan, reverberation (replace auxiliaries with reverberation)

• outputs, inputs, equalisation, fader, gain, routing, balance, auxiliaries (replace pan with balance)

What does a mixer do?

• Mixes the light signals together

• Combines the input sound signals into fewer output sound signals, allowing them to be mixed together

• Combines sound and light signals to produce an overall production

What are the two (2) types of mixers?

• Digital – processes digital audio signals to adjust their tone and volume

• Electrical – process sound by creating a circuit

• Analogue – use electronic components such as resistors, capacitors to blend audio signals