Resonance Signal Generating Method, Resonance Signal Generating Device, Electronic Musical Apparatus and Non-Transitory Computer Readable Medium

A resonance signal generating device comprising:

• a first resonance signal generator that includes a first loop including a first delayer that delays a signal by a time corresponding to a first pitch and a first attenuator that attenuates the signal, and a first excitation inputter that inputs a first excitation signal to the first loop, the first pitch being a pitch having a resonance frequency of a predetermined speaking length of a piano;
• a second resonance signal generator that includes a second loop including a second delayer that delays the signal by a time corresponding to a second pitch and a second attenuator that attenuates the signal, and a second excitation inputter that inputs a second excitation signal to the second loop, the second pitch not being a pitch having a resonance frequency of any of speaking lengths of the piano or a pitch of a harmonic thereof but being higher than the first pitch;
• and
• an outputter that outputs a first resonance signal circulating through the first loop and a second resonance signal circulating through the second loop.

A non-transitory computer readable medium storing a program allowing a computer to:

• generate a first resonance signal of a first pitch circulating through first loop processing by inputting a first excitation signal to the first loop processing including first delay that delays the signal by a time corresponding to the first pitch and first attenuation that attenuates the signal, the first pitch being a pitch having a resonance frequency of a predetermined speaking length of a piano;
• generate a second resonance signal of a second pitch circulating through second loop processing by inputting a second excitation signal to the second loop processing including second delay that delays the signal by a time corresponding to the second pitch and second attenuation that attenuates the signal, the second pitch not being a pitch having a resonance frequency of any of speaking lengths of the piano or a pitch of a harmonic thereof but being higher than the first pitch;
• and
• output the first resonance signal circulating through the first loop and the second resonance signal circulating through the second loop.