PSP HertzRider2: Frequency Shifter Plugin by PSP Audioware

Frequency shifting behaves differently from pitch shifting. Because every partial moves by the same number of hertz, harmonic relationships are broken, which is why the effect can make a sound more metallic, bell-like or dissonant.

PSP Audioware positions HertzRider2 for two main jobs. The first is tuning inharmonic sounds such as snares, where the shift can bring the resonant character into a more useful register. The second is creative damage on harmonic material, where the same settings push tones into clangorous, unstable textures.

The plugin offers a wide range of shifting settings, so the amount of shift can go from subtle to extreme.

HertzRider2 includes an LFO, or low frequency oscillator, that modulates the shifting. Moving the shift amount over time turns a static effect into one that sweeps and pulses, which suits sound design and experimental processing.

PSP Audioware says the plugin is designed to be as simple as possible and to use as few resources as possible. It also states that it adds only a very slight latency, and that this latency depends on frequency.