Speaker detecting device
AssigneePioneer Corporation
InventorsHajime Yoshino, Kazuya Tsukada
Life of this patent
Estimating the term…
Abstract
By the speaker detecting device, the test signal is supplied to the output terminal to which the speaker is to be connected. If a speaker is connected to the output terminal, the test sound is output via the speaker. If no speaker is connected to the output terminal, no test sound is output. The test sound detecting unit detects the test sound in the acoustic space and compares the signal level of the test sound with the predetermined threshold level, thereby to judge whether or not a speaker is connected to the output terminal.
Claims10
A speaker detecting device comprising:
- an output terminal for outputting a signal to drive a speaker;
- a test signal supplying unit for supplying the test signal to the output terminal;
- a test sound detecting unit, installed in an acoustic space in which the speaker is installed, for detecting a test sound corresponding to the test signal;
- and
- a speaker existence judging unit for judging whether or not a speaker is connected to the output terminal by comparing a signal level of the test sound, detected by the test sound detecting unit when the test signal supplying unit supplies the test signal to the output terminal, with a predetermined threshold level.
A program storage device readable by a computer having an output terminal for outputting a signal to drive a speaker and tangibly embodying a program of instructions executable by the computer to control the computer to function as a speaker detecting device comprising:
- a test signal supplying unit for supplying the test signal to the output terminal;
- a test sound detecting unit, installed in an acoustic space in which the speaker is installed, for detecting a test sound corresponding to the test signal;
- and
- a speaker existence judging unit for judging whether or not a speaker is connected to the output terminal by comparing a signal level of the test sound, detected by the test sound detecting unit when the test signal supplying unit supplies the test signal to the output terminal, with a predetermined threshold level.
A computer data signal embodied in a carrier wave and representing a series of instructions which causes a computer, having an output terminal for outputting a signal to drive a speaker, to function as a speaker detecting device comprising:
- a test signal supplying unit for supplying the test signal to the output terminal;
- a test sound detecting unit, installed in an acoustic space in which the speaker is installed, for detecting a test sound corresponding to the test signal;
- and
- a speaker existence judging unit for judging whether or not a speaker is connected to the output terminal by comparing a signal level of the test sound, detected by the test sound detecting unit when the test signal supplying unit supplies the test signal to the output terminal, with a predetermined threshold level.
Dependencies are inferred from the claim text.