panning

The spectral panning effect consists in converting a mono sound signal into a stereo sound signal where each frequency component is placed to its own azimuth position between the loudspeakers, creating an spectral split effect. One implementation is based on the short-term Fourier transform, and replaces a single spectrum (mono signal) by two spectra, while preserving the signal power with Blumlein's constant-power pan law. In its adaptive version, spectral panning uses a vector sound descriptors (such as the spectral envelope, the spectrum itself, the waveform, etc) to control the panning angle of each frequency bin.