Wrap a signal between "pi" and -"pi"
| signal | The signal to be wrapped. If the input signal value exceeds "pi" (3.14159), the output signal value is "wrapped" to a range whose lower bound is -"pi" (-3.14159). Thus a signal of increasing value outputs a sawtooth waveform with -"pi" and "pi" as lower and upper values. |

| Name | Description |
|---|---|
| cartopol~ | Signal Cartesian to Polar coordinate conversion |
| pfft~ | Spectral-processing manager for Patchers |
| pong~ | Variable range signal folding |
| MSP Tutorial 26: Frequency Domain Signal Processing with pfft~ | MSP Tutorial 26: Frequency Domain Signal Processing with pfft~ |