According to one aspect, there is an electronic musical instrument including operators which includes a first operator corresponding to a first pitch and a second operator corresponding to a second pitch, and a sound source configured to generate a first output signal from a first close loop and a second output signal from a second close loop, to generate an integration signal, and return a subtraction signal, the subtraction signal being obtained by subtracting a signal circulating through the first close loop from the integration signal, to the first close loop, and then output a musical sound signal including signal components corresponding to the second pitch as a musical sound signal corresponding to the first pitch.

An electronic musical instrument according to one embodiment includes playing operators specifying respective pitches, and at least one processor which is configured to execute processing of acquiring string sound data including a fundamental sound component and a harmonic tone component corresponding to a specified pitch, acquiring stroke sound waveform data that does not include the fundamental sound component and the harmonic tone component corresponding to the specified pitch but includes components other than the fundamental sound component and the harmonic tone component, and synthesizing the string sound data and stroke sound data corresponding to the stroke sound waveform data at a set ratio.

An electronic keyboard musical instrument includes a sound source configured to, in response to detection of key-pressing of the first key in damper-off detection, input first excitation signal data corresponding to the first key to a first channel, input first channel output data which is output from the first channel to each of low-register channels corresponding to the respective low-register keys, and output musical sound data which is generated based on respective pieces of low-register channel output data which is output from the respective low-register channels and the first channel output data, as musical sound data corresponding to the first key.

According to one aspect, there is an electronic musical instrument including operators which includes a first operator corresponding to a first pitch and a second operator corresponding to a second pitch, and a sound source configured to generate a first output signal from a first close loop and a second output signal from a second close loop, to generate an integration signal, and return a subtraction signal, the subtraction signal being obtained by subtracting a signal circulating through the first close loop from the integration signal, to the first close loop, and then output a musical sound signal including signal components corresponding to the second pitch as a musical sound signal corresponding to the first pitch.

A resonance signal generating method includes generating 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, generating 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 outputting the first resonance signal circulating through the first loop processing and the second resonance signal circulating through the second loop processing.

An electronic musical instrument according to one embodiment includes playing operators specifying respective pitches, and at least one processor which is configured to execute processing of acquiring string sound data including a fundamental sound component and a harmonic tone component corresponding to a specified pitch, acquiring stroke sound waveform data that does not include the fundamental sound component and the harmonic tone component corresponding to the specified pitch but includes components other than the fundamental sound component and the harmonic tone component, and synthesizing the string sound data and stroke sound data corresponding to the stroke sound waveform data at a set ratio.

A resonance signal generating method includes generating 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, generating 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 outputting the first resonance signal circulating through the first loop processing and the second resonance signal circulating through the second loop processing.

A resonance signal generating method includes generating a first resonance signal of a specific pitch circulating through first loop processing by inputting an excitation signal to the first loop processing including first delay that delays the signal by a time corresponding to the specific pitch and first attenuation that attenuates the signal, generating a second resonance signal of the specific pitch circulating through second loop processing by the second loop processing including second delay that delays the signal by a time corresponding to the specific pitch and second attenuation that attenuates the signal, generating an attenuation change signal by adding the first resonance signal and the second resonance signal to each other, attenuating and inverting the added first and second resonance signals, and inputting the generated attenuation change signal to the first loop processing and the second loop processing respectively, and outputting the first resonance signal.

A frequency-domain peak detector is configured to detect harmonic content of a digital input signal. An equalizer-based feedback synthesizer is configured to generate simulated feedback at a specified frequency by filtering existing content of the digital input signal at the specified frequency. A tone-based feedback synthesizer is configured to generate simulated feedback at the specified frequency by generating a tone at the specified frequency. Feedback selection logic is configured to determine the specified frequency at which to generate simulated feedback based on the harmonic content, and whether to utilize the equalizer-based feedback synthesizer or the tone-based feedback synthesizer to generate simulated feedback at the specified frequency.

An electronic musical instrument uses a mouthpiece model that models a mouthpiece as a three-dimensional shape having one end at which the mouthpiece is to be held in a mouth of a performer being smaller than another end. A processor in the instrument calculates a reflection coefficient of a progressive wave and a regressive wave using the mouthpiece model by calculating a wave impedance for the progressive wave and calculating a wave impedance for the regressive wave, and generates a musical sound signal on the basis of the calculated reflection coefficient, which is then outputted to a sound generator for sound production.