Signalling apparatus for a sound system, the signalling apparatus being configured for communicating with a processor, the signalling apparatus comprising: an identifier comprising a unique parameter value for identifying a sound property associated with the signalling apparatus; and an electrical contact configured to electrically connect with an electrical contact associated with the processor to communicate the parameter value with the processor, wherein the signalling apparatus is configured such that the electrical contact of the signalling apparatus is substantially fixed with respect to the electrical contact associated with the processor during activation of the sound system and/or signalling apparatus.

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.

Signalling apparatus for a sound system, the signalling apparatus being configured for communicating with a processor, the signalling apparatus comprising: an identifier comprising a unique parameter value for identifying a sound property associated with the signalling apparatus; and an electrical contact configured to electrically connect with an electrical contact associated with the processor to communicate the parameter value with the processor, wherein the signalling apparatus is configured such that the electrical contact of the signalling apparatus is substantially fixed with respect to the electrical contact associated with the processor during activation of the sound system and/or signalling apparatus.

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.