Synthesiser Functionality Quiz

What is the primary function of an oscillator in a synthesiser?

• To create white noise

• To shape the frequency content

• To create an initial sound according to a waveform

• To simulate wind or percussive sounds

Answer explanation

The primary function of an oscillator in a synthesiser is to create an initial sound according to a waveform. It generates audio signals that form the basis of the sound, which can then be shaped and modified.

What does a synthesiser's polyphony indicate?

• The type of waveform used

• The number of notes it can play at once

• The frequency range of the sound

• The amplitude of the sound

Answer explanation

A synthesiser's polyphony indicates the number of notes it can play at once. This is crucial for understanding how many simultaneous sounds can be produced, distinguishing it from other characteristics like waveform or amplitude.

What is the purpose of a filter in a synthesiser?

Answer explanation

The purpose of a filter in a synthesiser is to shape the frequency content of the signal, allowing for the manipulation of timbre and tone by emphasizing or attenuating specific frequency ranges.

What does LP12 refer to in the context of filters?

• The type of oscillator

• The number of notes played

• The filter type and its slope

• The amplitude of the sound

Answer explanation

LP12 refers to a specific type of filter characterized by its type and slope, indicating how it affects the frequency response. This makes 'The filter type and its slope' the correct choice.

What effect does high resonance settings have on a synthesiser?

• It creates white noise

• It leads to self-oscillation

• It reduces the frequency range

• It increases the amplitude

Answer explanation

High resonance settings on a synthesiser emphasize certain frequencies, which can cause the filter to resonate and lead to self-oscillation. This effect produces a sustained tone, making it the correct choice.

What is the primary function of an amplifier in a synthesizer?

• To control the pitch of the signal

• To control the volume of the signal

• To control the filter frequency

• To control the modulation rate

Answer explanation

The primary function of an amplifier in a synthesizer is to control the volume of the signal. It boosts the audio signal's strength, allowing for greater control over the output level.

Which component in a synthesizer is used to create a cyclic change in a parameter?

• Amplifier

• Envelope

• LFO

• Filter

Answer explanation

The LFO (Low-Frequency Oscillator) is specifically designed to create cyclic changes in parameters like pitch, volume, or filter cutoff, making it the correct choice for this question.

What does the 'Attack' parameter in an envelope control?

• The time taken to fall to the sustain level

• The level at which the parameter stays

• The time taken to reach the maximum value

• The time taken to release the key

Answer explanation

The 'Attack' parameter controls the time taken to reach the maximum value of the sound after a key is pressed. This is crucial for shaping the initial sound dynamics in an envelope.

Which type of synthesis involves combining simple sounds to create a new one?

• Subtractive synthesis

• Additive synthesis

• FM synthesis

• Sample-based synthesis

Answer explanation

Additive synthesis involves combining multiple simple sounds (sine waves) to create complex tones. This method builds new sounds by adding frequencies together, making it the correct choice for the question.

What is the main characteristic of FM synthesis?

• Uses a sample rather than an oscillator

• Uses an oscillator called a modulator and a carrier

• Combines simple sounds to make a new one

• Produces harmonically-rich waveforms

Answer explanation

FM synthesis primarily involves using two oscillators: a modulator that alters the frequency of a carrier oscillator. This interaction creates complex sounds, distinguishing it from other synthesis methods.