PP: Min frequency down to Zero Hz (and control over Phase)

[Kwurqx]

This is a feature request for Pigeon Plink (PP)
(actually 2 closely related feature requests)

0 Hz
If PP is using Phase Modulation (PM), instead of Frequency Modulation (FM), then it would be nice to have the minimum frequency starting from 0 (zero) Hz. With the carrier at 0 Hz (and V/Oct for "notes" on the Modulator) this would enable static Wave Shaping.

The Yamaha DX7 only goes down to 1 Herz (minus some detune). This low frequency will produce spectral modulation at that rate (so, no static spectrum). The Yamaha SY77/99 oscillators do go down to 0 Hz, and are able to produce static wave shaping at 0 Hz. This 0 Hz carrier thing offering a different spectral effect then when Carrier and Modulator are running at audiorates. True FM cannot go down to 0 Hz. In that case: as low as possible (will leave some of the beforementioned "LFO" timbral modulation).

Control over Phase (manual/static initial phase angle, but preferable also with modulation).
The "Wave shaping" by the 0 Hz "Carrier" depends on the Phase angle of the Carrier. Shifting the phase will change the symmetry of modulation. And will thus change the waveshape and thus the spectral content. So, shifting the angle could be static (setting the initial phase angle to any degree (SY77/99 only had a few angles on offer). But it would preferably also offer phase angle modulation. For the 0 Hz "trick", the shift could be controlled by some control source (like an ADSR). At audiorates it would simply be Yamaha style Phase Modulation. As said, with the added option to set the initial phase angle.

I guess at this point in time only NYSTHI TZOP offers all this (down to 0 Hz). It has Linear FM and Phase Angle with Modulation (and Exponential FM). Though it only offers SINE as carrier oscillator shape. The modulator can off course be any oscillator at the input.