The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 08, 2015
Filed:
Nov. 16, 2012
National Tsing Hua University, Hsinchu, TW;
National Tsing Hua University, Hsinchu, TW;
Abstract
A method of using microphones to measure a particle velocity comprises steps: arranging a sound source, a first microphone and a second microphone in a space, wherein the first microphone is arranged between the sound source and second microphone, and wherein the first microphone is located at a first position and the second microphone is located at a second position more far away from the sound source than the first position; using the first and second microphones to measure the sound source and obtain first and second acoustic pressures respectively; using the first and second positions and an equivalent source method to establish a free-space Green's function, and using the first and second acoustic pressures and the equivalent source method to establish an acoustic pressure function; and using the free-space Green's function and acoustic pressure function to predict state space of sound amplitude and then obtain a particle velocity.