Patent · US Active

N-path spectral decomposition in acoustic signals

US11763827B2 · kind B2 · utility

0Cited by

1References

2Claims

0Family size

Assignee

The Board of Trustees of the Leland Stanford Junior University · US

Inventors

Boris Murmann · Palo Alto, US
Daniel A. Villamizar · Woodinville, US

Key dates

Filing date	Oct 30, 2020
Grant date	Sep 19, 2023
Priority date	—
Expiry date	Nov 20, 2040

Classification

Technology area (CPC H)Electricity
CPC primaryH03H19/002
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A method and device for extracting information from acoustic signals receives acoustic signals by a microphone, processes them in an analog front-end circuit, converts the processed signals from the analog front-end circuit to digital signals by sampling at a rate of less than 1 kHz or more preferably less than 500 kHz; and processes the digital signals by a digital back-end classifier circuit. The analog front-end processing decomposes the received signals into frequency components using a bank of analog N-path bandpass filters having different subband center frequencies.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.