Method for visualizing sound source energy distribution in echoic environment

摘要

A method for visualizing sound source energy distribution in an echoic environment comprises steps: arranging in an echoic environment a plurality of arrayed sound pickup units, wherein each sound pickup unit includes at least two microphones separated by a directive distance enabling the sound pickup unit to have a primary pickup direction; disposing the sound pickup units with the primary pickup directions thereof pointing toward a sound source in the echoic environment, and measuring the sound source by the sound pickup units to obtain a sound source-related parameter; substituting the directive distance and the parameter into an algorithm to make the parameter have directivity; and then substituting the parameter into an ESM algorithm to establish a sound source energy distribution profile. Thereby, the method can measure a sound source in a specified direction in an echoic environment and establish a visualized sound source energy distribution profile.

主权项

1. A method for visualizing sound source energy distribution in an echoic environment, comprising:
arranging a plurality of arrayed sound pickup units in an echoic environment, wherein each sound pickup unit includes at least two microphones separated by a directive distance enabling the sound pickup unit to have a primary pickup direction; disposing the sound pickup units with the primary pickup directions thereof pointing toward a sound source in the echoic environment to measure the sound source, wherein each of the microphones obtains a sound pressure signal and the sound pressure of each microphone within the sound pickup unit is added and divided by the number of the microphones to obtain a sound pressure parameter; substituting the directive distance and the sound pressure parameter into a value-array based algorithm to obtain a directive sound pressure parameter; substituting the directive sound pressure parameter into an ESM (Equivalent Source Method); and calculating a sound source energy distribution profile.