초록 ▼

An electronic percussion instrument which is capable of accurately discriminating roll performance to thereby electronically produce percussion tones closer to tones produced by a natural percussion instrument. A waveform memory 6 stores waveform data of percussion tones to be output for roll perfor

An electronic percussion instrument which is capable of accurately discriminating roll performance to thereby electronically produce percussion tones closer to tones produced by a natural percussion instrument. A waveform memory 6 stores waveform data of percussion tones to be output for roll performance and waveform data of percussion tones to be output for non-roll performance. A work memory 4 stores values of parameters. A drum pad 1 has a percussion surface part 10, and a percussion pattern-detecting section detects a pattern of percussion applied to the percussion surface part 10 of the drum pad 1 and outputs a value of the parameter indicative of the detected pattern of percussion. The values of the parameter output from the percussion pattern-detecting section are sequentially stored in a buffer area of the work memory 4 in the order of output. Whenever a new value of the parameter is stored in the buffer area, a waveform data-determining section determines one of the two waveform data stored in the waveform memory 6 according to at least two values of the parameter stored before the new value of the parameter was stored and the new value of the parameter. A tone generation controller 7 reads out the determined waveform data from the waveform memory 6 and outputs a musical tone signal generated based on the read-out waveform data.

대표청구항 ▼

What is claimed is: 1. An electronic percussion instrument comprising: a waveform data storage device that stores waveform data of percussion tones to be output for roll performance and waveform data of percussion tones to be output for non-roll performance; a performance operator that has a percus

What is claimed is: 1. An electronic percussion instrument comprising: a waveform data storage device that stores waveform data of percussion tones to be output for roll performance and waveform data of percussion tones to be output for non-roll performance; a performance operator that has a percussion surface; a percussion pattern-detecting device that detects a pattern of percussion applied to the percussion surface of said performance operator, and outputs a value of a parameter indicative of the detected pattern of percussion; a parameter storage device that stores values of the parameter; a storage control device that causes values of the parameter output from said percussion pattern-detecting device to be sequentially stored in said parameter storage device in an order of output; a waveform data-determining device that is operable when a new value of the parameter is stored in said parameter storage device, to determine one of the two waveform data stored in said waveform data storage device according to at least two values of the parameter stored before the new value of the parameter was stored and the new value of the parameter; and a musical tone signal output device that reads out the determined waveform data from said waveform data storage device, and outputs a musical tone signal generated based on the read-out waveform data. 2. An electronic percussion instrument as claimed in claim 1, wherein the detected pattern of percussion is a beat-to-beat time interval, a degree of beat intensity, a displacement amount of a beat position on the percussion surface, or a combination of at least two thereof. 3. An electronic percussion instrument as claimed in claim 1, wherein said percussion pattern-detecting device is operable when a beat is applied to the percussion surface, to detect a time interval between the beat and an immediately preceding beat as the pattern of percussion, and output a value of a parameter indicative of the detected time interval as the value of the parameter, and said waveform data-determining device is operable when a time interval indicated by a new value of the parameter stored in said parameter storage device and time intervals indicated by at least two values of the parameter stored before the new value of the parameter was stored are all shorter than a predetermined value, to determine the waveform data of percussion tones to be output for roll performance, from the two waveform data stored in said waveform data storage device. 4. An electronic percussion instrument as claimed in claim 3, wherein said percussion pattern-detecting device detects beat intensity of the beat applied to the percussion surface and the time interval, and outputs values of respective parameters indicative of the detected beat intensity and the detected time interval, and said waveform data-determining device is operable when the time interval indicated by the new value of the parameter indicative thereof stored in said parameter storage device and the time intervals indicated by the at least two values of the parameter indicative thereof stored before the new value of the parameter indicative thereof was stored are all shorter than the predetermined value, and a degree of beat intensity indicated by a new value of the parameter indicative thereof is smaller than a predetermined value, to determine the waveform data of percussion tones to be output for roll performance. 5. An electronic percussion instrument as claimed in claim 1, wherein said percussion pattern-detecting device is operable when a beat is applied to the percussion surface, to detect a time interval between the beat and an immediately preceding beat as the pattern of percussion, and output a value of a parameter indicative of the detected time interval as the value of the parameter, and said waveform data-determining device is operable when an average value of the time interval indicated by a new value of the parameter indicative thereof stored in said parameter storage device and time intervals indicated by at least two values of the parameter indicative thereof stored before the new value of the parameter indicative thereof was stored is smaller than a predetermined value, to determine the waveform data of percussion tones to be output for roll performance, from the two waveform data stored in said waveform data storage device. 6. An electronic percussion instrument as claimed in claim 5, wherein said percussion pattern-detecting device detects beat intensity of the beat applied to the percussion surface and the time interval, and outputs values of respective parameters indicative of the detected beat intensity and the detected time interval, and said waveform data-determining device is operable when the average value of the time interval indicated by the new value of the parameter indicative thereof stored in said parameter storage device and the time intervals indicated by the at least two values of the parameter indicative thereof stored before the new value of the parameter was stored is smaller than the predetermined value and a degree of beat intensity indicated by a new value of the parameter indicative thereof is smaller than a predetermined value, to determine the waveform data of percussion tones to be output for roll performance. 7. An electronic percussion instrument as claimed in claim 1, wherein said percussion pattern-detecting device is operable when a beat is applied to the percussion surface, to detect beat intensity of the beat as the pattern of percussion, and output a value of a parameter indicative of the detected beat intensity as the value of the parameter, and said waveform data-determining device is operable when a degree of beat intensity indicated by a new value of the parameter indicative thereof stored in said parameter storage device and degrees of beat intensity indicated by the at least two values of the parameter indicative thereof stored before the new value of the parameter indicative thereof was stored are all smaller than a predetermined value, to determine the waveform data of percussion tones to be output for roll performance, from the two waveform data stored in said waveform data storage device. 8. An electronic percussion instrument as claimed in claim 1, wherein said percussion pattern-detecting device is operable when a beat is applied to the percussion surface, to detect a positional displacement amount between a position where the beat was applied and a position where an immediately preceding beat was applied, as the pattern of percussion, and output a parameter indicative of the detected positional displacement amount, and said waveform data-determining device is operable when a positional displacement amount indicated by a new value of the parameter indicative thereof stored in said parameter storage device and positional displacement amounts indicated by at least two values of the parameter indicative thereof stored before the new value of the parameter indicative thereof was stored are all smaller than a predetermined value, to determine the waveform data of percussion tones to be output for roll performance, from the two waveform data stored in said waveform data storage device. 9. An electronic percussion instrument comprising: a storage device that stores a plurality of waveform data obtained by applying percussion to a percussion instrument, and stores a plurality of waveform data analogous to each other in association with beats determined as equal to each other; a performance operator that has a percussion surface; a detecting device that detects a beat applied to the percussion surface of said performance operator, and outputs a beat detection signal indicative of the detected beat; a determining device that determines a pattern of percussion based on the beat detection signal; a waveform reading device that reads out waveform data associated with the pattern determined by said determining device, from the storage device, said waveform reading device being operable when percussion of a certain pattern is detected, to read out waveform data selected in accordance with a predetermined algorithm from a plurality of waveform data associated with beats equal to each other, corresponding to the detected pattern; a musical tone-generating device that generates a musical tone signal based on the read-out waveform data, and outputs the generated musical tone signal; and a switching control device that switches waveform data to be read out by said waveform reading device whenever the beat detection-signal is output. 10. An electronic percussion instrument as claimed in claim 9, wherein the detected pattern of percussion is beat intensity, a beat-to-beat time interval, a beat position on the percussion surface, a time period of contact with the percussion surface, or a combination of at least two thereof. 11. An electronic percussion instrument as claimed in claim 9, wherein said switching control device generates a random number in accordance with a predetermined random number generation algorithm, and switches the waveform data to be read out by said waveform reading device, according to the generated random number. 12. A program, on a computer readable medium, readable by a computer including a waveform data storage device that stores waveform data of percussion tones to be output for roll performance and waveform data of percussion tones to be output for non-roll performance, an input device that inputs a parameter indicative of a pattern of percussion applied to a percussion instrument, a parameter storage device that stores values of the parameter, and an output device that outputs a musical tone signal, comprising the instructions for: causing values of the parameter input via the input device to be sequentially stored in the parameter storage device in an order of input; when a new value of the parameter is stored in the parameter storage device, determining one of the two waveform data stored in the waveform data storage device according to at least two values of the parameter stored before the new value of the parameter was stored and the new value of the parameter; and reading out the determined waveform data from the waveform data storage device, and outputting a musical tone signal generated based on the read-out waveform data. 13. A program, on a computer readable medium, readable by a computer including a storage device that stores a plurality of waveform data obtained by applying percussion to a percussion instrument, and stores a plurality of waveform data analogous to each other in association with beats determined as equal to each other, an input device that inputs a beat detection signal indicative of a beat applied to a percussion instrument, and an output device that outputs a musical tone signal, comprising the instructions for: determining a pattern of percussion based on the beat detection signal input via the input device; reading out waveform data associated with the pattern determined by said determining, from the storage device, said waveform reading being operable when percussion of a certain pattern is detected, to read out waveform data selected in accordance with a predetermined algorithm from a plurality of waveform data associated with beats equal to each other, corresponding to the detected pattern; generating the musical tone signal based on the read-out waveform data, and outputs the generated musical tone signal via the output device; and switching waveform data to be read out by said waveform reading whenever the beat detection signal is output.