Electronic musical instrument
First Claim
Patent Images
1. An electronic musical instrument comprising:
- a keyboard having a plurality of keys;
means for providing a plurality of tone signals corresponding to one note, each of the tone signals having a common fundamental frequency and different frequency spectra;
means coupled to said keyboard and arranged to generate an envelope signal in response to a key depression, the envelope signal having an amplitude which is a function of the key depression speed;
a plurality of envelope imparting means, each being connected to receive the envelope signal and one of the tone signals, and being arranged to impart the envelope of the envelope signal to the applied tone signal;
mixing means for mixing the output signals of said plurality of envelope imparting means; and
clipping means connected between the output of at least one of said envelope imparting means and said mixing means to clip the output of said envelope imparting means.
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Abstract
A plurality of tone signals corresponding to one note and having the same fundamental frequency and different harmonic components are modified in amplitude according to the shape of an envelope signal generated upon key depression and having an amplitude proportional to the key depression speed. One of the amplitude-modified tone signals is clipped at a predetermined level and then mixed with another amplitude-modified tone signal. The frequency spectrum of the resultant tone signal varies with time like a piano.
12 Citations
16 Claims
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1. An electronic musical instrument comprising:
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a keyboard having a plurality of keys; means for providing a plurality of tone signals corresponding to one note, each of the tone signals having a common fundamental frequency and different frequency spectra; means coupled to said keyboard and arranged to generate an envelope signal in response to a key depression, the envelope signal having an amplitude which is a function of the key depression speed; a plurality of envelope imparting means, each being connected to receive the envelope signal and one of the tone signals, and being arranged to impart the envelope of the envelope signal to the applied tone signal; mixing means for mixing the output signals of said plurality of envelope imparting means; and clipping means connected between the output of at least one of said envelope imparting means and said mixing means to clip the output of said envelope imparting means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An electronic musical instrument comprising:
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a keyboard having a plurality of keys; means for providing a plurality of tone signals corresponding to one note; means coupled to said keyboard and arranged to generate an envelope signal in response to a key depression, the envelope signal having an amplitude which is a function of the key depression speed; a plurality of envelope imparting means, each being connected to receive the envelope signal and one of the tone signals, and being arranged to impart the envelope of the envelope signal to the applied tone signal, each of said envelope imparting means including a sampling circuit for sampling the envelope signal from said envelope signal generating means by the applied tone signal; mixing means for mixing the output signals of said plurality of envelope imparting means; means for making, before said mixing, said plurality of tone signals to have different harmonic components; and clipping means connected between the output of at least one of said envelope imparting means and said mixing means to clip the output signal of said envelope imparting means. - View Dependent Claims (13, 14, 15, 16)
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Specification