Patent ID: 9721159
Date: 2017-08-01
CPC Classifications: G06K,G10H,G10L,H04R

Claim:
1. A scalar periodicity analysis system for converting a physically perceptible input to a physically perceptible output derived from a measurement of a periodicity-related attribute of the input by generating the measurement from the input and using the measurement to derive the output that is different from the input, the system comprising: an input receiver; a signal processor defining a first target frequency and a second target frequency and configured to receive a physically perceptible input from the input receiver, wherein the input comprises a signal having a periodicity-related attribute and a set of input frequencies, and wherein the signal processor is configured to process the input into an alpha signal comprising at least the first target frequency and the second target frequency and a beta signal comprising at least the first target frequency and the second target frequency; wherein at least one signal of the group consisting of the alpha signal and the beta signal is a digital signal, and wherein the signal processor defines a working Nyquist frequency associated with the highest Nyquist frequency of the alpha signal and the beta signal; wherein the signal processor when receiving an input signal, comprising at least a first frequency of a first magnitude and a second frequency of a second magnitude, wherein the second frequency is a higher frequency than the first frequency, and wherein both the first frequency and the second frequency are below half the working Nyquist frequency, outputs the alpha signal and the beta signal, wherein the alpha signal comprises the first frequency at a first alpha magnitude and the second frequency at a second alpha magnitude, wherein the beta signal comprises the first frequency at a first beta magnitude and the second frequency at a second beta magnitude, and wherein the product of the first alpha magnitude, the first beta magnitude and the square of the second magnitude, is greater than the product of the second alpha magnitude, the second beta magnitude and the square of the first magnitude; wherein the alpha signal has a first group delay difference with the beta signal at the first target frequency; wherein the alpha signal has a second group delay difference with the beta signal at the second target frequency; wherein the alpha signal has a first phase difference with the beta signal at the first target frequency; wherein the alpha signal has a second phase difference with the beta signal at the second target frequency; wherein the first phase difference is between 80 and 100 degrees; wherein the second phase difference is between 80 and 100 degrees; wherein the first group delay difference is within 90% and 110% of the second group delay difference; wherein the first group delay difference is greater than zero; a modulation unit configured to multiply at least the alpha signal and the beta signal to produce a modulated output; and a scalar periodicity unit configured to generate a measurement of the attribute of the input derived from the modulated output to produce a physically perceptible output based on the measurement, to overcome latency in audio recognition, wherein the physically perceptible output is different than, and derived from, the input and wherein the physically perceptible output is derived from the measurement.