Automatic performance device utilizing data having various word lengths
First Claim
1. An automatic musical performance device comprising:
- storing means for storing first musical note data represented by digital words whose word lengths are different in accordance with frequency in use of each note in a music to be performed;
read out means for reading out said first musical note data from said storing means;
conversion means for converting said first musical note data to second musical note data, said second musical note data being represented by digital words whose word lengths are independent of said frequency in use of each note; and
producing means for producing at least one of a musical tone signal and a key designating signal in accordance with said second musical note data fed from said conversion means, said key designating signal being a signal which designates a key to be depressed in a keyboard.
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Accused Products
Abstract
An automatic musical performance device including storage circuits, read out control circuits, and conversion circuits, wherein the storage circuits store a series of musical note data. Each of the musical note data is represented by multi-bits whose number is dependent on its own use frequency which means a degree of repetitive use of the data in a music. The read out control circuits read out the musical note data from said storage circuits and supply the musical note data to the conversion circuits. Then, the conversion circuits perform the code conversion of the musical note data to other musical note data whose number of bits are independent of their own use frequency. In the automatic musical performance device, musical sounds are produced or key depressing positions are indicated in accordance with the musical note data from the conversion circuits.
18 Citations
8 Claims
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1. An automatic musical performance device comprising:
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storing means for storing first musical note data represented by digital words whose word lengths are different in accordance with frequency in use of each note in a music to be performed; read out means for reading out said first musical note data from said storing means; conversion means for converting said first musical note data to second musical note data, said second musical note data being represented by digital words whose word lengths are independent of said frequency in use of each note; and producing means for producing at least one of a musical tone signal and a key designating signal in accordance with said second musical note data fed from said conversion means, said key designating signal being a signal which designates a key to be depressed in a keyboard. - View Dependent Claims (2)
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3. An automatic musical performance device comprising:
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storing means for storing first note name data represented by digital words whose word lengths are different in accordance with frequency in use of each note name in a music to be performed; read out means for reading out said first note name data from said storing means; conversion means for converting said first note name data from said storing means to second note name data, said second note name data being represented by digital words whose word lengths are independent of said frequency in use of each note name; and producing means for producing at least one of a musical tone signal and a key designating signal in accordance with said second note name data fed from said conversion means, said key designating signal being a signal which designates a key to be depressed in a keyboard. - View Dependent Claims (4, 5)
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6. An automatic musical performance device comprising:
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storing means for storing note name data corresponding to notes in a music to be performed and first note length data corresponding to said notes and represented by digital words whose word lengths are different in accordance with frequency in use of each note length in said music; read out means for reading out said note name data and said first note length data; conversion means for converting said first note length data read out from said storing means to second note length data, said second note length data being represented by digital words whose word lengths are independent of said frequency in use of each note length; and producing means for producing at least one of a musical tone signal and a key designating signal in accordance with said note name data read out from said storing means and said second note length data fed from said conversion means, said key designating signal being a signal which designates a key to be depressed in a keyboard. - View Dependent Claims (7, 8)
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Specification