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Patent Searching and Data


Title:
ACOUSTIC PROCESSING DEVICE, ACOUSTIC PROCESSING METHOD, AND COMPUTER PROGRAM
Document Type and Number:
WIPO Patent Application WO/2017/217106
Kind Code:
A1
Abstract:
[Problem] To provide an acoustic processing device with which it is possible to effectively cancel noise at low cost. [Solution] There is provided an acoustic processing device provided with: a first sound collector for collecting a first noise signal from a noise source, the first noise signal leaking into a casing mounted on the ear of a user; a first signal processing unit for forming a first noise cancelling signal for cancelling noise at a cancellation point on the basis of the first noise signal; a second signal processing unit for forming a second noise cancelling signal for cancelling noise at a cancellation point in relation to a first pseudo noise signal; an addition unit for adding the first noise cancelling signal and the second noise cancelling signal; and a sound emitting unit for emitting the output of the addition unit inside the casing, the first pseudo noise signal being a signal obtained by subtracting, from the output of the first sound collector, the output of the addition unit, to which is imparted simulated transmission characteristics that simulate the transmission characteristics from the sound emitting unit to the first sound collector.

Inventors:
HAYASHI SHIGETOSHI (JP)
ASADA KOHEI (JP)
ITABASHI TETSUNORI (JP)
YOSHII KAZUMA (JP)
SUZUKI MITSUHIRO (JP)
TSUCHIYA SHINPEI (JP)
YAMABE YUSHI (JP)
Application Number:
PCT/JP2017/015572
Publication Date:
December 21, 2017
Filing Date:
April 18, 2017
Export Citation:
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Assignee:
SONY CORP (JP)
International Classes:
G10K11/178
Foreign References:
JP2012226366A2012-11-15
JP2014033303A2014-02-20
Other References:
See also references of EP 3471089A4
Attorney, Agent or Firm:
KAMEYA, Yoshiaki et al. (JP)
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