| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a digital broadcast receiver and a control method of an audio output signal which can correctly and simply adjust phases of audio signals between a loudspeaker of the digital broadcast receiver and a loudspeaker connected with external acoustic equipment without having to rely on auditory senses of users. <P>SOLUTION: A digital broadcast receiver comprises: a testing audio signal generating part which generates a testing audio signal and supplies external acoustic equipment with the testing audio signal; a microphone which picks up an external audio generated from a loudspeaker connected to the external acoustic equipment after the external acoustic equipment amplifies the testing audio signal; a phase difference detection part which detects phase difference between the testing audio signal generated by the testing audio signal generating part and the external audio signal generated by the microphone; and a phase inversion part which inverts the phase of the audio signal when the phase difference is within the predetermined range. <P>COPYRIGHT: (C)2012,JPO&INPIT |
