| 摘要 |
<P>PROBLEM TO BE SOLVED: To remove any influence of vibration of a loud speaker from an output of an acceleration sensor in a system in which the acceleration sensor and the loud speaker are built into the same housing. <P>SOLUTION: An electronic system (car navigation system) 10 in which a housing 100 is provided with a built-in loud speaker 132 and an acceleration sensor 124 has an acceleration data corrector 140 that removes the influence of vibration of the built-in loud speaker 132 on the output of the acceleration sensor 124. The acceleration data corrector 140 is provided with control means 110, an audio signal processor 141 that subjects audio signals supplied to the built-in loud speaker 132 to Fourier transform, an acceleration signal processor 142 that subjects the output of the acceleration sensor 124 to Fourier transform, and a signal synthesizer 143 that, when audio signals are outputted from the built-in loud speaker 132, subjects the output of the acceleration sensor, having also undergone Fourier transform, to inverse Fourier transform after clearing the output of any affected portion of the audio signals. <P>COPYRIGHT: (C)2012,JPO&INPIT |
