Musical tone signal synthesizing apparatus employing selective excitation of closed loop
First Claim
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1. A musical tone signal synthesizing apparatus for an electronic musical instrument, comprising:
- a manipulator for generating performance information corresponding to manipulation thereof;
envelope signal generating means for converting the performance information into an envelope signal, a value of which changes over time;
excitation means for generating an excitation signal on the basis of the envelope signal; and
a loop circuit for circulating the excitation signal inputted from the excitation means, the loop circuit having delay means which delays a signal circulating in the loop by a delay time corresponding to a tone pitch of a musical tone signal to be generated,wherein the musical tone signal is extracted from at least one of the loop circuit and the excitation means.
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Abstract
Tone generation in conformity with the tone generating mechanism of actual rubbed string instruments is made to obtain musical tones rich in reality as generated by natural musical instruments. Performance information outputted from a performance manipulator is converted into tone generation parameter by parameter generating means. Excitation means generate an excitation signal corresponding to the string-rubbing style on the basis of the tone generation parameter. A loop circuit gives both acoustic and propagation delay of the string to the excitation signal to thereby generate musical tone signals.
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Citations
29 Claims
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1. A musical tone signal synthesizing apparatus for an electronic musical instrument, comprising:
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a manipulator for generating performance information corresponding to manipulation thereof; envelope signal generating means for converting the performance information into an envelope signal, a value of which changes over time; excitation means for generating an excitation signal on the basis of the envelope signal; and a loop circuit for circulating the excitation signal inputted from the excitation means, the loop circuit having delay means which delays a signal circulating in the loop by a delay time corresponding to a tone pitch of a musical tone signal to be generated, wherein the musical tone signal is extracted from at least one of the loop circuit and the excitation means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A musical tone signal synthesizing apparatus for an electronic musical instrument, comprising:
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a manipulator for generating performance information corresponding to manipulation during a performance by a player; excitation means for generating an excitation signal on the basis of the performance information; at least two loop circuits for circulating the excitation signal inputted from the excitation means, each of the loop circuits having delay means which delays a signal circulating in the loop by a delay time corresponding to a tone pitch of a musical tone signal to be generated; and controlling means for assigning one of the two loop circuits based on the performance information and for supplying the excitation signal generated by the excitation means to the assigned loop circuit, wherein the musical tone signal is extracted from at least one of the two loop circuits. - View Dependent Claims (27, 28, 29)
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Specification