US 12,451,108 B2
Musical performance correction method and musical performance correction device
Akira Maezawa, Hamamatsu (JP)
Assigned to YAMAHA CORPORATION, Hamamatsu (JP)
Filed by YAMAHA CORPORATION, Hamamatsu (JP)
Filed on Jun. 23, 2021, as Appl. No. 17/355,574.
Application 17/355,574 is a continuation of application No. PCT/JP2019/049914, filed on Dec. 19, 2019.
Claims priority of application No. 2018-248198 (JP), filed on Dec. 28, 2018.
Prior Publication US 2021/0319775 A1, Oct. 14, 2021
Int. Cl. G10H 1/053 (2006.01); G10H 1/00 (2006.01)
CPC G10H 1/053 (2013.01) [G10H 1/0008 (2013.01); G10H 1/0066 (2013.01); G10H 2210/066 (2013.01); G10H 2210/091 (2013.01); G10H 2210/335 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A musical performance correction method executable by a computer, the musical performance correction method comprising:
acquiring from a MIDI instrument, musical performance data indicating a played pitch played by a user;
estimating a playing position in a musical composition by analyzing the musical performance data, wherein:
the playing position is estimated, for each of a plurality of combinations of a first pitch and a second pitch, using probability of the second pitch being erroneously played in place of the first pitch;
correcting the played pitch indicated by the musical performance data to a reference pitch, from among a plurality of reference pitches corresponding to the playing position in the musical composition, in a case where a difference between the played pitch and the reference pitch is less than a predetermined value;
generating a sound signal, corresponding to the musical performance data, including a reference pitch, in a state where the played pitch has been corrected to the reference pitch; and
performing, via a DA converter, digital-to-analog conversion of the generated sound signal and outputting the converted sound signal to a sound emission device that emits the converted sound signal to sound.