Title:
【発明の名称】楽音採譜装置
Document Type and Number:
Japanese Patent JP2871204
Kind Code:
B2
Abstract:
PURPOSE:To prevent variation in pitch from being decomposed into fine variation in the fine interval of a short note by absorbing the variation in pitch by the hysteresis that a recurrent network has when a musical sound which varies in pitch like singing and vibrato performance is put on a score. CONSTITUTION:This device has a band-pass filter bank part 14 which converts an external audio signal into power envelopes by frequency channels, a conflict recollection neural network part 13 which finds pitch categories from the power envelopes by the channels obtained from the band-pass filter bank part 14, an interval buffer part 12 which holds the pitch categories outputted by the conflict recollection neural network part 13, a readout timing generation part 15 which generates transcription intervals of musical intervals required for transcription and a musical interval storage part 11 which inputs and records pitch data from the interval buffer part 12 according to the timing outputted by the readout timing generation part 15.
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Inventors:
SHIBATA NAOKI
Application Number:
JP20836791A
Publication Date:
March 17, 1999
Filing Date:
August 21, 1991
Export Citation:
Assignee:
NIPPON DENKI KK
International Classes:
G06F15/18; G06G7/60; G06N3/00; G06N99/00; G10G3/04; (IPC1-7): G10G3/04; G06F15/18; G06G7/60
Domestic Patent References:
| JP3249799A | ||||
| JP4323696A |
Attorney, Agent or Firm:
Yoshiyuki Iwasa