In-duct acoustic measuring apparatus and method

摘要

An apparatus and a method for measuring one or more acoustic parameters in a duct are described. The method includes arranging at least one pair of microphones in an array on a microphone support device, disposing the microphone support device including the array of microphones in the duct, generating an acoustic signal in the duct such that the acoustic signal propagates toward the array of microphones, and receiving by the array of microphones, the acoustic signal to provide a microphone output signal. The microphone support device is configured to fit within an inner diameter of the duct.