Patent ID: 8378201
Filing Date: 2013-02-19
Classification: G10H

Abstract:
1. A resonance generation device of an electronic musical instrument including a keyboard comprising keys including at least one depressed key and a played key, and a digital signal processing unit artificially creating a resonance; the resonance generation device comprising: a key depression detector detecting whether the depressed key is already depressed at a time when the played key different from the depressed key is played, wherein the played key is played when not all remaining keys are already depressed; a specific relation detector detecting a specific relation between a pitch of the played key and a pitch of the already depressed key, wherein the specific relation detector sequentially judges presence/absence of a specific relation starting from a lowest key among the at least one depressed key higher than the played key; and a musical sound generator generating a predetermined musical sound set in advance based on the specific relation between the pitch of the played key and the pitch of the depressed key; wherein a position, which generates the musical sound set in advance based on the specific relation between the pitch of the played key and the pitch of the depressed key, is a position of the depressed key; wherein the musical sound generator comprises a data table including specific relations and resonance pitches, the resonance pitches being a function of the specific relations; wherein a resonance pitch from the data table is added to the musical sound, and the resonance pitch is one of (a) the pitch of the depressed key, (b) the pitch of the played key, or (c) the pitch of the depressed key plus a third pitch comprising an additional number of semitones above the pitch of the depressed key; wherein the resonance pitch is extracted from the data table in response to the specific relation between a pitch of the played key and a pitch of the already depressed key; and wherein the digital signal processing unit generates a musical sound including the resonance pitch.