Systems and methods for classifying electrical signals

A computational system to implement an adaptive model to process a plurality of input signals, the system including:

• an input handling section, for receiving the input signals as digital signals and converting them into a plurality of analog output signals;
• a multiplicative section adapted to perform a plurality of multiplication operations on each analog output signal using respective analog circuits comprising respective electrical components, tolerances in the electrical components causing the multiplication operations to be by respective randomly-set parameters;
• an analog-to-digital conversion section for converting the results of the multiplication operations into digital values, and including:
• (i) a plurality of current controlled oscillator (CCO) units, each current controlled oscillator unit being arranged to fire based on the result of a plurality of said multiplication operations
• (ii) for each current controlled oscillator unit, a counter arranged to count the number of firings of the CCO unit in a time window;
• and
• a processing unit for receiving the digital values, and generating an output as a function of the number of firings of the CCO units and a respective set of variable parameters.

A computer-implemented method to process a plurality of input signals, the method including:

• (i) receiving the input signals and converting them into a plurality of analog output signals, the conversion comprising:
• receiving digital input values expressed as multi-digit digital numbers, and from the digital input values generating the analog output signals;
• (ii) performing a plurality of multiplication operations on each analog output signal using respective analog circuits comprising respective electrical components, tolerances in the electrical components causing the multiplication operations to be by respective randomly-set parameters;
• (iii) forming a plurality of sum values, each sum value being the sum of a plurality of the results of the multiplication operations, and converting the sum values into digital values;
• and
• (iv) receiving the digital values, and generating an output as a function of the digital values and a respective plurality of variable parameters.

A computational method of processing a plurality of input signals, the method including:

• receiving the input signals as digital signals and converting the input signals into a plurality of analog output signals;
• performing a plurality of multiplication operations on each analog output signal using respective analog circuits comprising respective electrical components, tolerances in the electrical components causing the multiplication operations to be by respective randomly-set parameters;
• and
• transmitting to each of a plurality of current controlled oscillator (CCO) units, a control signal based on the result of a respective plurality of said multiplication operations,
• counting the number of firings of each CCO unit in a time window;
• and
• generating an output as a function of the number of firings of each CCO unit and a respective set of variable parameters.