# Record card
38
Description
The Q-PLL is an innovative nonlinear circuit which is able to synchronize to a signal comprising two or more incommensurate frequencies (forcing).
When the forcing contains two prevailing frequencies the locking response is a third frequency parametrically selected among those prescribed by the theory of three-frequency resonances in dynamical systems.
In particular, the locked frequency is closely related to the pitch perception of complex sound in humans.
Thematic areas
Materials / Properties of materials, corrosion, degradation
ICT & Electronics / Sensor/multi-sensor technology, instrumentation
ICT & Electronics / Optics & Acoustic
ICT & Electronics / Robotics and control systems
Health & Biotech / Medical Device
Health & Biotech / Micro and nanotechnology related to biological sciences
Health & Biotech / Bio-medicals
ICT & Electronics / Electronics and microelectronics
ICT & Electronics / Information processing, information system, workflow management
ICT & Electronics / IT and Telematics applications
ICT & Electronics / Multimedia
ICT & Electronics / Telecommunications