Title:
SRC DEVICE AND METHOD BASED ON THE EXTRACTION AND SYNTHESIS OF AN IMPULSE RESPONSE
Document Type and Number:
WIPO Patent Application WO/2010/119963
Kind Code:
A1
Abstract:
Provided are a device and a method for sampling frequency rate conversion (SRC), which is capable of high-speed, high-precision data conversion. When a discrete impulse response function η(Pr,n) is extracted from an impulse response function η(t,n), extremely high-speed, high-precision sampling frequency rate conversion is possible by considering the differential interpolation position (Pr) which is the specified parameter corresponding to the difference between the time corresponding to the n0-th value of an original data sequence Y(nT), namely, the discrete point (n0T), and the temporal interpolation position (m0Tb) which is set to correspond to the m0-th value of a new data sequence Y(mTb) which is closest to the discrete point (n0T); and considering the periods (T, Tb), namely, the frequencies (fs, fb); and synthesizing the data using this kind of discrete impulse response function η(Pr,n).
Inventors:
OSHIMA EIKI (JP)
Application Number:
PCT/JP2010/056876
Publication Date:
October 21, 2010
Filing Date:
April 16, 2010
Export Citation:
Assignee:
UNITEDWORKS INC (JP)
AYEL CO LTD (JP)
OSHIMA EIKI (JP)
AYEL CO LTD (JP)
OSHIMA EIKI (JP)
International Classes:
H03H17/00; G10L19/00; H03H17/02
Foreign References:
| JP2002026690A | 2002-01-25 | |||
| JP2008181020A | 2008-08-07 | |||
| JP2004529519A | 2004-09-24 | |||
| JP2005287032A | 2005-10-13 |
Attorney, Agent or Firm:
FUKUDA MITSUHIRO (JP)
Mitsuhiro Fukuda (JP)
Mitsuhiro Fukuda (JP)
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