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

Claim 0:
1. A sound source visualization device comprising:
a sound source detection module configured to detect 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;
a preprocessing module configured to filter out the noise from the detected sound source signal, and amplify the sound source signal;
a calculation module configured to calculate an approximate sound source location, including a separation distance from the 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 (lTDs) obtained by three sound source detection sensors forming a right angle among the four sound source detection sensors by means of a triangulation method;
a search module configured to generate a three-dimensional sound source location and altitude information based on an ITD obtained from two sound source sensors installed diagonally at different heights among the three sound source detection sensors forming the right angle; and
a visualization module configured to output sound source information, including the three-dimensional sound source location information, sound source altitude information, and sound source intensity information, to a preset system host or to convert this sound source information into a visualization signal and display the visualized signal.