Title:
位置検出システム、この位置検出システムに用いるオーディオ装置及び端末装置
Document Type and Number:
Japanese Patent JP4788318
Kind Code:
B2
Abstract:
A position detecting system is provided, which is capable of effectively preventing erroneous detection of audio to be measured. The position detecting system includes a terminal device that inputs an audio signal from an audio device and a microphone. The audio device sequentially inputs measurement audio signals that have been formed by two or more audio signals of different frequencies to a speaker and receives a notification signal, wherein the report signal indicates that the audio of the measurement audio signal has been collected from the terminal device. The audio device clocks a time t1 and a time t2, namely clocks after the audio of the measurement audio signal is output from the speakers SP 1 --- SP2 until the notification signals of the measurement audio signals are received by the signal receiving unit. The audio device calculates the position of the microphone by using the times t1 and t2. For each frequency component of the measurement audio signal, when an audio signal exceeding a predetermined level is inputted from the microphone, the terminal device detects it as a component of the measurement audio signal and transmits a notification signal upon detection of the measurement audio signal.
Inventors:
Satoshi Suzuki
Ishibashi Toshiaki
Ryo Tanaka
Ishibashi Toshiaki
Ryo Tanaka
Application Number:
JP2005349090A
Publication Date:
October 05, 2011
Filing Date:
December 02, 2005
Export Citation:
Assignee:
Yamaha Corporation
International Classes:
H04S5/02
Domestic Patent References:
| JP2005236502A | ||||
| JP2003195859A | ||||
| JP2005198249A | ||||
| JP2002186100A | ||||
| JP1276900A | ||||
| JP2005012784A | ||||
| JP2005286862A |
Attorney, Agent or Firm:
Kaede International Patent Office
Hisao Komori
Tatsuichi Murakami
Hisao Komori
Tatsuichi Murakami