How to avoid overtones in audio signal

1. Do all sounds have overtones?
2. How do overtones affect sound quality?
3. Why do overtones occur?
4. What is difference between harmonics and overtones?

Do all sounds have overtones?

While the fundamental is usually heard most prominently, overtones are actually present in any pitch except a true sine wave. The relative volume or amplitude of various overtone partials is one of the key identifying features of timbre, or the individual characteristic of a sound.

How do overtones affect sound quality?

A sound without a distinct pitch is usually regarded as unpleasant. So, an instrument with harmonic overtones means that you can add the harmonics in various amounts to adjust the tone quality while preserving a sense of pitch and producing a pleasing sound.

Why do overtones occur?

overtone, in acoustics, tone sounding above the fundamental tone when a string or air column vibrates as a whole, producing the fundamental, or first harmonic. If it vibrates in sections, it produces overtones, or harmonics.

What is difference between harmonics and overtones?

Overtone is a term implemented to any high order frequency standing wave, while the term harmonic is used for those cases in which the frequencies of the overtones are integral multiples of the fundamental frequency.