| 摘要 |
<P>PROBLEM TO BE SOLVED: To determine a degree of echo in a mobile phone. <P>SOLUTION: An echo determination system includes: sounding means for sounding a speaker 17 of a mobile phone using a test signal; measurement means for measuring sound pressure collected by a microphone 18 of the mobile phone, when the speaker 17 sounds by the sounding means; determination means for determining whether or not a degree of echo is within a normal range on the basis of a measurement result of the sound pressure measured by the measurement means; and output means for outputting a determination result determined by the determination means. <P>COPYRIGHT: (C)2012,JPO&INPIT |
