Title:
The safe audio playback in a human machine interface
Document Type and Number:
Japanese Patent JP6250692
Kind Code:
B2
Abstract:
The present invention relates to an audio processing system (100) for providing safe audio playback. An audio controller (110) outputs an intermediate audio signal (M) having a predefined test segment comprising a predefined test frequency component. An audio synthesis stage (120) provides, based on the intermediate audio signal, an output audio signal (P) for use in audio playback. An audio test is performed based on a first segment of the output audio signal corresponding to the test segment of the intermediate audio signal, and a safety processor (150) verifies operation of the audio synthesis stage in case the result of the audio test is positive. The safety processor verifies operation of a frequency monitor (130) if both the frequency monitor and a frequency-selective audio sensor (140) detect the test frequency in the first segment of the output audio signal.
Inventors:
Gillens Belld, Erik
Bendebaum, Yohen
Bendebaum, Yohen
Application Number:
JP2015543405A
Publication Date:
December 20, 2017
Filing Date:
November 19, 2013
Export Citation:
Assignee:
Bombardier Transportation GmbH
International Classes:
G08B29/10; G10K15/04
Domestic Patent References:
| JP2009518662A | ||||
| JP7287595A | ||||
| JP2010166187A | ||||
| JP2012085040A |
Attorney, Agent or Firm:
Kurata Masatoshi
Nobuhisa Nogawa
Takashi Mine
Katsu Sunagawa
Nobuhisa Nogawa
Takashi Mine
Katsu Sunagawa