Acoustic source localization method based on geometrical information modeling in enclosure space and adopting single microphone
A closed space, sound source localization technology, applied in the direction of the beacon system using ultrasonic/sonic wave/infrasonic wave, can solve the problem of poor practicability
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[0088] refer to Figure 1-3 . The specific steps of the single-microphone sound source localization method based on geometric information modeling in a closed space of the present invention are as follows:
[0089] The actual enclosed space is a rectangular space, its length, width and height are 0.9m, 1.0m, and 1.2m respectively, and its boundary is an acrylic glass structure. The coordinate origin is set at the bottom corner of the closed space, the microphone is hoisted on the top of the closed space, its coordinates are (0.5m, 0.5m, 1m), and the sound source position coordinates are (0.7m, 0.8m, 0.3m).
[0090] Step 1. Establish a node model containing the geometric information of the closed space. Since the shape of this space is regular, the nodes are evenly distributed. There are 9 nodes on each coordinate axis, and there are 729 nodes in total.
[0091] Step 2. Obtain the system equation for calculating the position of the sound source.
[0092] Step 3. Calculate th...
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