Keyboard input coding device and musical note displaying device
First Claim
1. An electronic musical instrument comprising a keyboard means for generating the keyboard signals by means of keying operation,a musical interval code producing means for producing the musical interval codes based on the keyboard signals from the said keyboard means,a detecting means for detecting rise and fall states of the said keyboard signals,a counting means for counting ON and OFF duration of the said keyboard signals and outputting counting data,a memory means of data for note-length coding for memorizing predetermined comparing data and triplet discriminating data,a note-length discriminating means for receiving said counting data based on signals from the said detecting means and coding the said counting data according to said comparing data in the said memory means and correcting the data according to the said triplet discriminating data taken in sequence and thus providing note-length data for discriminating the note-length of the notes having possibility of a triplet, anda controlling means for controlling the said memory means and note-length discriminating means.
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Accused Products
Abstract
This invention relates to a keyboard input coding device comprising a counter for counting ON and OFF duration of signals obtained by pushing a keyboard, an encoder for producing codes of musical interval corresponding to keys of the keyboard, a note-length discriminating circuit for taking count values from the counter based on signals from the keyboard and discriminating a note-length, a note-length memory circuit for receiving or supplying the note-length data from or to the note-length discriminating circuit, a reference time generating circuit for supplying the note-length discriminating circuit with data of partitioning a musical section and a processing control circuit, wherein the discrimination of the note-length is effected by referring to the note-length between sequential notes according to data stored in the memory circuit, thereby a musical note with a note-length to agree well with intention of an operator is coded after correcting the key input duration data according to estimates made from the relation of the note-length between sequential notes, and also to a musical note displaying device comprising a CRT display, a character ROM, a video RAM and a timing circuit for these circuits, wherein an additional note-chaining circuit is provided to take musical note data outputted by the keyboard input coding device, note-chaining data (musical interval) between sequential two musical notes and note-chaining pattern selecting data in the musical note data and to generate note-chaining pattern corresponding to musical note position, and the note-chaining pattern data generated from the additional note-chaining circuit and the musical note pattern of the character ROM are superposed so as to produce a chained note thereby a musical note is displayed at pattern which can be clearly seen as a staff.
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Citations
10 Claims
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1. An electronic musical instrument comprising a keyboard means for generating the keyboard signals by means of keying operation,
a musical interval code producing means for producing the musical interval codes based on the keyboard signals from the said keyboard means, a detecting means for detecting rise and fall states of the said keyboard signals, a counting means for counting ON and OFF duration of the said keyboard signals and outputting counting data, a memory means of data for note-length coding for memorizing predetermined comparing data and triplet discriminating data, a note-length discriminating means for receiving said counting data based on signals from the said detecting means and coding the said counting data according to said comparing data in the said memory means and correcting the data according to the said triplet discriminating data taken in sequence and thus providing note-length data for discriminating the note-length of the notes having possibility of a triplet, and a controlling means for controlling the said memory means and note-length discriminating means.
- 8. A musical note displaying device comprising a timing circuit which produces the output of an address scanning signal, a video RAM for taking the input of the said address scanning signal and a musical note data, a character ROM for generating a musical note pattern based on the signal from the said video RAM, and said address scanning signal, an additional note-chaining circuit for taking note-chaining data of a musical interval between sequential two musical notes and note-chaining pattern corresponding to musical note position, and also comprising a synthesizing circuit for producing the output of a synthesized pattern according to the note-chaining pattern generated from the said additional note-chaining circuit and the musical note pattern generated from the said character ROM, and a CRT display for displaying a musical note in a pattern based on said synthesized pattern from said synthesizing circuit.
Specification