In addition there is a control to vary the amount of second harmonic distortion.

In practice total harmonic distortion is not easy to measure, especially when small.

Also, at this time because the transfer function is no longer linear, harmonic distortion will result.

The highest generally acceptable level of total harmonic distortion is considered to be 0.1%.

In audio applications this can be the reason for harmonic distortion.

This leads to high harmonic distortion, which is often undesirable.

The level at which harmonic distortion becomes audible is not straightforward.

Some also produce significant 3rd harmonic distortion, which is less pleasant to the ear.

Both groups now seem to agree that the distribution of harmonic distortion can be important in perceived sound quality.

One is harmonic distortion, which, despite its name, can sound quite unharmonious.