This report describes a series of subjective tests made to discover whether instantaneous companding could profitably be applied to a pulse-code-modulation system designed for high quality sound ...

Pulse-density modulation control of chemical oscillation far from equilibrium in a droplet open-reactor system. Nat. Commun. 7:10212 doi: 10.1038/ncomms10212 (2016).

a, Logical diagram of the operation of the high-speed all-optical modulator.The gate (red) signal has its intensity modulation transferred to the source (blue) signal via nonlinear phase ...