Music & Audio Advice Synthesizer Waveform Fundamentals 2 — Questions and Answers
Question 1: Which waveform contains only the fundamental frequency with no harmonics?
- Sine wave (Correct answer)
- Sawtooth wave
- Square wave
- Triangle wave
Correct answer: Sine wave
A pure sine wave consists of a single frequency with no overtones or harmonics.
Question 2: A sawtooth wave is known for containing which set of harmonics?
- All harmonics, both odd and even (Correct answer)
- Only odd harmonics
- Only even harmonics
- No harmonics
Correct answer: All harmonics, both odd and even
A sawtooth wave contains all integer harmonics, giving it a bright, buzzy tone.
Question 3: Which waveform's harmonics roll off faster, giving it a softer, more mellow sound than a square wave?
- Triangle wave (Correct answer)
- Sawtooth wave
- Pulse wave
- Noise
Correct answer: Triangle wave
The triangle wave contains only odd harmonics that fall off steeply, producing a soft tone.
Question 4: Pulse-width modulation (PWM) is most directly applied to which waveform?
- Square/pulse wave (Correct answer)
- Sine wave
- Triangle wave
- Sawtooth wave
Correct answer: Square/pulse wave
PWM changes the duty cycle of a pulse/square wave to create movement and tonal variation.
Question 5: What characteristic harmonic content does a square wave have?
- Only odd harmonics (Correct answer)
- Only even harmonics
- All harmonics
- Random harmonics
Correct answer: Only odd harmonics
A symmetrical square wave contains only odd harmonics, giving it a hollow, woody tone.
Question 6: Which classic synthesizer waveform is the best starting point for emulating brass and string sounds because of its rich harmonics?
- Sawtooth wave (Correct answer)
- Sine wave
- Triangle wave
- Pure noise
Correct answer: Sawtooth wave
The sawtooth's full harmonic spectrum makes it ideal for bright brass and string patches.
Question 7: White noise is best described as containing what?
- Equal energy across all frequencies (Correct answer)
- A single fundamental tone
- Only low frequencies
- Only odd harmonics
Correct answer: Equal energy across all frequencies
White noise has equal energy per frequency band, useful for percussion and wind effects.
Music & Audio Advice Synthesizer Waveform Fundamentals 2
Which waveform contains only the fundamental frequency with no harmonics?