This rectifies the waveform so that its phase is 100% positive. The audible effect is a doubling of the audio signal’s frequency.
This rectifies the waveform so that its phase is 100% negative. The audible effect is a doubling of the audio signal’s frequency.
This alternates between rectifying the phase of the first negative waveform excursion to positive, then the next positive excursion to negative, and so on, throughout the waveform. The audible effect is a halving of the audio signal’s frequency, creating a subharmonic tone.
This alternates between holding the maximum value of the first positive excursion through the negative excursion period, switching to rectify the next positive excursion, and holding its peak negative value until the next zero crossing. The audible effect is a halving of the audio signal’s frequency, and creating a subharmonic tone with a hollow, square wave-like timbre.
