Electronic percussion instrument and percussion tone control program

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.

A program 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:

• a storage control module 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;
• a waveform data-determining module that is operable when a new value of the parameter is stored in the parameter storage device, to determine 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
• an output module for 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.

A program 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:

• a determining module for determining a pattern of percussion based on the beat detection signal input via the input device;
• a waveform reading module for reading out waveform data associated with the pattern determined by said determining module, from the storage device, said waveform reading module 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 module for generating the musical tone signal based on the read-out waveform data, and outputs the generated musical tone signal via the output device;
• and
• a switching control module for switching waveform data to be read out by said waveform reading device whenever the beat detection signal is output.