Audio Harmonic Rectification

Static Switching Rectangle (SSR) is a common issue found in audio systems, particularly when processing signals with lofty content of dither.
Harmonic distortion is a major contributor to the degradation of audio quality, and mitigating it is crucial to achieve clean and clear sound.

Harmonic distortion occurs when the signal is forced through a system with a frequency-compromised response, resulting in frequencies not present in the original signal being introduced.
These added frequencies can greatly reduce the overall audio quality and noise level.
One approach to mitigate this problem is by using a method called signal enhancement processing.

Harmonic distortion cancellation is based on a mathematical approach developed by Robert Sturkey and Harry F Olson in the 1930s.
The basic idea is to subtract a set of noise sources, calculated based on the signal being processed, from the original signal.
The result is a residual that typically contains mostly noise not related to the original signal content.

To achieve effective harmonic distortion cancellation, there are several key considerations.
The first is that a lot more of the odd harmonics must be cancelled than the odd harmonics to ensure that even harmonic content i.e., 4th harmonic, does not raise to audible levels.

The second involves choosing a band-pass filter that is as flat as possible and using frequency compensation to adjust circuit parameters to include as much of the high frequency spectrum possible.
This is more likely to effectively reduce distortion produced by "non-periodic" background noise.

However, the process of removing the primary frequency from a signal along with its associated frequencies is a highly difficult one, mainly due to issues with performance of operation frequency.

Fortunately, in the past several years there may have been solid research conducted in this area specifically regarding how to effectively nullify audio imperfections such as these caused by harmonic distortion within different environments that host sound waves having the lowest frequencies and اس اس آر the lowest frequencies that exist.