Claims
- 1. An electronic tone generation apparatus, for producing a modified waveform signal which corresponds to a modification of an external input sound signal, and for storing said modified waveform signal for future use in generating sounds, comprising:
- external signal input means for receiving an external analog input signal;
- sampling means coupled to said external signal input means for receiving said external analog input signal and for sampling said external analog input signal at a predetermined sampling frequency to produce a digital waveform signal;
- waveform memory means coupled to said sampling means for storing said digital waveform signal provided form said sampling means;
- signal modifying means coupled to said waveform memory means for reading out a digital waveform signal representing a waveform stored in the waveform memory means, and for modifying a timbre characteristic of said read-out digital waveform signal in a predetermined manner;
- means for supplying a modified waveform signal, derived from the signal modifying means, to the waveform memory means to store, for a later performance, a digital signal representing said modified waveform signal in the waveform memory means; and
- reading means coupled to said waveform memory means for reading out, at said later performance, the digital signal representing said modified waveform signal;
- said signal modifying means including filtering means for filtering the read-out digital waveform signal to change the timbre characteristic of the waveform represented by the digital waveform signal.
- 2. An electronic tone generation apparatus, in which an externally generated waveform signal is recorded in the form of a digital signal in a waveform memory means and the digital signal recorded in the waveform memory means is converted into a tone signal having a pitch, comprising:
- external signal input means for receiving an external analog input signal;
- means for converting said external analog input signal into a digital signal, and for storing said digital signal in said waveform memory means;
- control means including a plurality of waveform read channels for reading digital signal stored in said waveform memory means to obtain a plurality of tones simultaneously;
- signal modifying means coupled to said waveform memory means for reading out a digital signal representing a waveform stored in the waveform memory means, and for modifying a timbre characteristic of said read-out digital signal in a predetermined manner;
- means for supplying a modified waveform signal, derived from the signal modifying means, to the waveform memory means to store, for a later performance, a digital signal representing said modified waveform signal in the waveform memory means; and
- reading means coupled to said waveform memory means for reading out, at said later performance, the digital signal representing said modified waveform signal;
- said signal modifying mean including filtering means for filtering the read-out digital signal to change the timbre characteristic of the waveform represented by the digital signal.
- 3. An electronic tone generation apparatus, for producing a modified waveform signal which corresponds to a modification of an external input sound signal, and for storing said modified waveform signal for future use in generating sounds, comprising:
- supplying means for supplying a digital waveform signal representing an original sound waveform;
- waveform memory means coupled to said supplying means for storing said digital waveform signal supplied from said supplying means;
- signal modifying means coupled to said waveform memory means for reading out a digital waveform signal representing a waveform stored in the waveform memory means, and for modifying at least one characteristic of said read-out digital waveform signal in a predetermined manner;
- means for supplying a modified waveform signal, derived form the signal modifying means, to the waveform memory means to store, for a later performance, a digital signal representing said modified waveform in the waveform memory means; and
- reading means coupled to said waveform memory means for reading out, at said later performance, the digital signal representing said modified waveform signal.
- 4. The electronic tone generation apparatus according to claim 3 wherein said signal modifying means includes a filtering means for filtering the read-out digital waveform signal to change the timbre characteristic of the waveform represented by the digital waveform signal.
- 5. The electronic tone generation apparatus according to claim 4, wherein said filtering means includes a voltage controlled filter.
- 6. The electronic tone generation apparatus according to claim 3, wherein said modifying means includes a voltage controlled amplifier for controlling the characteristic of the read-out digital waveform signal.
- 7. An electronic tone generation apparatus, in which an original sound waveform signal is recorded in the form of a digital signal in a waveform memory means and the digital signal recorded in the waveform memory means is converted into a tone signal having a designated pitch, comprising:
- supplying means for supplying a digital signal representing an original sound waveform;
- means for storing said digital signal supplied from said supplying means in said waveform memory means;
- control means including a plurality of waveform read channels for reading a digital signal stored in said waveform memory means at different rates to obtain a plurality of tones simultaneously;
- signal modifying means coupled to said waveform memory means for reading out a digital signal representing the original sound waveform stored in the waveform memory means, and for modifying a timbre characteristic of said read-out digital signal in a predetermined manner;
- means for supplying a modified waveform signal, derived from the signal modifying means, to the waveform memory means to store, for a later performance, a digital signal representing said modified waveform signal in the waveform memory means; and
- reading means coupled to said waveform memory means for reading out, at said later performance, the digital signal representing said modified waveform signal.
- 8. The electronic tone generation apparatus according to claim 7, wherein said signal modifying means includes a filtering means for filtering the read-out digital signal to change the timbre characteristic of the waveform represented by the digital signal.
- 9. The electronic tone generation apparatus according to claim 8, wherein said filtering means includes a voltage controlled filter.
- 10. The electronic tone generation apparatus according to claim 7, wherein said modifying means includes a voltage controlled amplifier for controlling the characteristic of the read-out digital signal.
Priority Claims (2)
Number |
Date |
Country |
Kind |
60-200259 |
Sep 1985 |
JPX |
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60-201301 |
Sep 1985 |
JPX |
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Parent Case Info
This is a division of application Ser. No. 07/456,617 filed Dec. 22, 1989 (now U.S. Pat. No. 5,025,700), which is a continuation of Ser. No. 07/336,524 filed Apr. 10, 1989 (abandoned) which is a continuation of Ser. No. 07/162,637 filed Mar. 1, 1988 (abandoned) which is a Division of Ser. No. 902,530, filed Sept. 2, 1986, now U.S. Pat. No. 4,754,680.
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Divisions (2)
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Date |
Country |
Parent |
456617 |
Dec 1989 |
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Parent |
902530 |
Sep 1986 |
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Continuations (2)
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Number |
Date |
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Parent |
336524 |
Apr 1989 |
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Parent |
162637 |
Mar 1988 |
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