Title:
信号補正装置
Document Type and Number:
Japanese Patent JP5494492
Kind Code:
B2
Abstract:
A signal correction apparatus receives an input audio signal (serving as a first sound reception means). The signal correction apparatus computes, at every frequency, first power that indicates magnitude of sound represented by the input audio signal (serving as a first power computation means). The signal correction apparatus estimates a correction function that is a continuous function defining a relation between each frequency and a correction coefficient used to approximate the first power computed at that frequency to the reference power predetermined for that frequency (serving as a correction function estimation means). The signal correction apparatus multiplies the computed first power by the correction coefficient acquired in accordance with the relation defined by the estimated correction function so as to correct the first power at every frequency (serving as a power correcting means).
Inventors:
Emori Tadashi
Tsujikawa Takenori
Tsujikawa Takenori
Application Number:
JP2010540301A
Publication Date:
May 14, 2014
Filing Date:
September 03, 2009
Export Citation:
Assignee:
NEC
International Classes:
H04R3/00; G10L21/02; H04R1/40; H04R3/04; H04R29/00
Domestic Patent References:
| JP2008164747A | 2008-07-17 | |||
| JP2005057400A | 2005-03-03 | |||
| JP2007129373A | 2007-05-24 | |||
| JP2004343700A | 2004-12-02 | |||
| JP2002540696A | 2002-11-26 |
Attorney, Agent or Firm:
Baba Shiba
Sakai Hiromi
Sakai Hiromi