Inventor
NIIMI KOJI
22 patents
⚠️ This page may combine multiple inventors who share the name “NIIMI KOJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NIPPON MUSICAL INSTRUMENTS MFG
13 patentsUS4587620AMay 6, 1986
Noise elimination device
NIPPON MUSICAL INSTRUMENTS MFG67 citations94
US4706291ANov 10, 1987
Reverberation imparting device
NIPPON MUSICAL INSTRUMENTS MFG36 citations92
US4130043ADec 19, 1978
Electronic musical instrument having filter-and-delay loop for tone production
NIPPON MUSICAL INSTRUMENTS MFG42 citations92
US4133241AJan 9, 1979
Electronic musical instrument utilizing recursive algorithm
NIPPON MUSICAL INSTRUMENTS MFG35 citations91
US4246823AJan 27, 1981
Waveshape generator for electronic musical instruments
NIPPON MUSICAL INSTRUMENTS MFG25 citations82
US4213366AJul 22, 1980
Electronic musical instrument of wave memory reading type
NIPPON MUSICAL INSTRUMENTS MFG24 citations82
US4184400AJan 22, 1980
Electronic musical instrument utilizing data processing system
NIPPON MUSICAL INSTRUMENTS MFG25 citations82
US4084472AApr 18, 1978
Electronic musical instrument with tone generation by recursive calculation
NIPPON MUSICAL INSTRUMENTS MFG8 citations74
US4223582ASep 23, 1980
Electronic musical instrument by nonlinearly addressing waveform memory
NIPPON MUSICAL INSTRUMENTS MFG11 citations73
US4183275AJan 15, 1980
Electronic musical instrument
NIPPON MUSICAL INSTRUMENTS MFG15 citations73
US4244257AJan 13, 1981
Wave-shape generator for electronic musical instruments
NIPPON MUSICAL INSTRUMENTS MFG8 citations72
US4389892AJun 28, 1983
Reverberation characteristics measuring device
NIPPON MUSICAL INSTRUMENTS MFG6 citations62
US4258602AMar 31, 1981
Electronic keyboard musical instrument of wave memory reading type
NIPPON MUSICAL INSTRUMENTS MFG5 citations54
YAMAHA CORP
8 patentsUS7925006B2Apr 12, 2011
Multi-channel echo cancel method, multi-channel sound transfer method, stereo echo canceller, stereo sound transfer apparatus and transfer function calculation apparatus
YAMAHA CORP43 citations96
US5365468ANov 15, 1994
Sampling frequency converter
YAMAHA CORP61 citations95
US6835885B1Dec 28, 2004
Time-axis compression/expansion method and apparatus for multitrack signals
YAMAHA CORP25 citations92
US6084974AJul 4, 2000
Digital signal processing device
YAMAHA CORP41 citations92
US4803731AFeb 7, 1989
Reverbation imparting device
YAMAHA CORP33 citations92
US7403609B2Jul 22, 2008
Multi-channel echo cancel method, multi-channel sound transfer method, stereo echo canceller, stereo sound transfer apparatus and transfer function calculation apparatus
YAMAHA CORP15 citations91
US6362764B1Mar 26, 2002
Digital to analog conversion apparatus and method with cross-fading between new and old data
YAMAHA CORP29 citations90
US7925008B2Apr 12, 2011
Multi-channel echo cancel method, multi-channel sound transfer method, stereo echo canceller, stereo sound transfer apparatus and transfer function calculation apparatus
YAMAHA CORP5 citations72