US 11,942,106 B2
Apparatus for analyzing audio, audio analysis method, and model building method
Kouhei Sumi, Hamamatsu (JP)
Assigned to Yamaha Corporation, Hamamatsu (JP)
Filed by Yamaha Corporation, Hamamatsu (JP)
Filed on May 27, 2021, as Appl. No. 17/332,426.
Application 17/332,426 is a continuation of application No. PCT/JP2019/044522, filed on Nov. 13, 2019.
Claims priority of application No. 2018-223863 (JP), filed on Nov. 29, 2018.
Prior Publication US 2021/0287695 A1, Sep. 16, 2021
Int. Cl. G10L 25/51 (2013.01); F21V 23/00 (2015.01); G06F 3/14 (2006.01); G10L 25/90 (2013.01)
CPC G10L 25/51 (2013.01) [F21V 23/003 (2013.01); G06F 3/14 (2013.01); G10L 25/90 (2013.01)] 17 Claims
OG exemplary drawing
 
3. A computer-implemented audio analysis method comprising:
acquiring a series of feature amounts of an audio signal; and
generating boundary data by inputting the acquired series of feature amounts into a boundary estimation model that has learned relationships between: (i) a series of feature amounts, and (ii) boundary data representative of boundaries, each boundary being between consecutive periods in each of which a chord is continuous, wherein
the boundary data represents, for each of a plurality of time points on a time axis, a likelihood that a time point corresponds to a boundary between consecutive periods.