A sound source includes: a processor that implements instructions to execute a plurality of tasks, including: a first calculating task that calculates a first estimated value based on a detection result yielded by a detecting device that detects passage of a key through a first, a second, and a third positions, the first estimated value pertaining to behavior of the key at a predetermined position; a second calculating task that calculates a second estimated value based on the result, the second estimated value pertaining to behavior of the key at a fourth position; a signal generating task that generates a first and a second sound signals; a first adjusting task that adjusts an output level of the first sound signal based on the first estimated value; and a second adjusting task that adjusts an output level of the second sound signal based on the second estimated value.

This control device for an electronic percussion instrument inputs a musical sound signal corresponding to a hit on a struck surface to a first amplifier for amplifying a signal to be connected to a first speaker disposed on the back side of or around the struck surface, and inputs the musical sound signal to a second amplifier for amplifying a signal to be connected to a second speaker disposed on the back side of or around a first struck surface at a timing later than a timing at which the musical sound signal is inputted to the first amplifier.

An electronic instrument includes at least one processor, and the at least one processor is configured to determine, based on previously acquired fingering time information relating to a time required for a fingering operation performed by a performer, a delay set time for confirming a new fingering operation in response to the new fingering operation.

A content control device includes: a plurality of controls to which a plurality of parameters for controlling properties of a content containing at least one of sound and video are respectively assigned, each of the plurality of controls outputting a first indicated value in accordance with an operation amount of the control; and a processor configured to previously create setting information used to determine respective values of the plurality of parameters in accordance with the second indicated value; determine the values of the plurality of parameters corresponding to the second indicated value respectively in accordance with the second indicated value and the setting information; and revise each of the values of the parameters to be determined in accordance with the first indicated value outputted for the control assigned to the parameter.

A playing controller includes: a data acquiring unit configured to acquire audio data associated with information regarding a play position in a music piece and text-related data associated with the information regarding the play position; an operation signal acquiring unit configured to acquire an operation signal indicating an operation for a control of the music piece; an audio data processing unit configured to process, in accordance with the operation signal, the audio data associated with a section within the music piece identified by the information regarding the play position; an image data generating unit configured to generate image data containing a character image based on the text-related data and process the character image showing a lyric in the section based on the information regarding the play position and the operation signal; and a data output unit configured to output the processed audio data and the image data.

A fade device includes a processor that couples a crossfader to a mixer, the processor using crossfader input to apply an acceleration or a latency to an audio signal passing through a mixer.

A sound output device comprising a data storage device storing a first sound signal, a second sound signal, and a third sound signal and a controller including a processor that implements instructions stored in a memory to execute a plurality of tasks, including a sound signal output tasks that reads the first and second sound signals or the first and third sound signals from the data storage device based on first information included in an instruction signal that instructs outputting of sound, the first information designating a magnitude of the sound and outputs the read sound signals.

A sound signal generation method for a keyboard including a pedal and a key, the method according to an embodiment of the present disclosure comprises generating a first sound signal and a second sound signal different from the first sound signal based on first operation data corresponding to an operation of the key, and adjusting a relationship between the first sound signal and the second sound signal to sound at respective timings according to a physical quantity of a key pressing operation of the key to control a decay rate of the first sound signal to be different from a decay rate of the second sound signal based on a key release operation of the key.

A fade device includes a processor that couples a crossfader to a mixer, the processor using crossfader input to apply an acceleration or a latency to an audio signal passing through a mixer.

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.