| 摘要 |
A pressure sensitive apparatus includes a mat and a speaker box. The mat has a first contact plate, a second contact plate, and a compression spring positioned between the first and second contact plates thereby creating a space between the first and second contact plates. The speaker box includes a speaker and a power source connected to the speaker. The pressure sensitive apparatus further includes a connecting means for connecting the power source to the speaker through the mat. Upon applying a pre-determined amount of pressure on the mat, a bias force of the compression spring is overcome and compresses the compression spring thereby causing the first contact plate and the second contact plate to contact one another completing an electrical circuit between the power source and the speaker and causing an audible sound to be emitted from the speaker.
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