Patent ID: 11927682
Assignee: nan
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 4:
5. A sound source visualization method comprising the steps of:
(A) detecting, by a sound source detection module, a sound source signal, including a surrounding sound, a sound source, and noise, by using four sound source detection sensors, wherein the four sound source detection sensors are arranged at vertices of a specific rectangle respectively, and at least one of the four sound source detection sensors is installed at a different height from the rest of the four sound source detection sensors;
(B) filtering out, by a preprocessing module, the noise from the detected sound source signal, and amplifying, by the preprocessing module, the sound source signal;
(C) calculating, by a calculation module; an approximate sound source location, including a separation distance from a sound source visualization device, direction, sound source intensity, and a two-dimensional position of the sound source, by analyzing the preprocessed sound source signal, wherein the separation distance, the direction and the two-dimensional position of the sound source are calculated by using two Interaural Time Differences (ITDs) obtained by three sound source detection sensors forming a right angle among the four sound source detection sensors by means of a triangulation method;
(D) generating, by a search module, three-dimensional sound source location information based on an ITD obtained from two sensors installed diagonally at different heights among the three sound source detection sensors forming the right angle; and
(E) converting, by a visualization module, sound source information, including the three-dimensional sound source location information, sound source altitude information, and sound source intensity information, into a visualization signal, and displaying, by the visualization module, the visualized signal.