A method for adjusting accompaniment music is disclosed. The method transposes the musical key of at least one section of the accompaniment music such that a song will have different musical key transpositions for different sections of the accompaniment music, so that singers whose vocal ranges are narrow can sing songs after the adjustment.

An electronic device comprising circuitry configured to separate by audio source separation a first audio input signal into a first vocal signal and an accompaniment, and to transpose an audio output signal by a transposition value based on a pitch ratio, wherein the pitch ratio is based on comparing a first pitch range of the first vocal signal and a second pitch range of the second vocal signal.

An apparatus and method for pitch-shifting an audio signal with low complexity are disclosed. The method includes identifying a distance between an audio object included in the audio signal and a listener, checking whether the distance between the audio object and the listener decreases, and performing stepwise stretching pitch-shifting of repeatedly using at least one of frequency components of the audio signal when the distance between the audio object and the listener decreases.

An apparatus and method for pitch-shifting an audio signal with low complexity are disclosed. The method includes identifying a distance between an audio object included in the audio signal and a listener, checking whether the distance between the audio object and the listener decreases, and performing stepwise stretching pitch-shifting of repeatedly using at least one of frequency components of the audio signal when the distance between the audio object and the listener decreases.

In a synthesizer 1, the highest note number is set from the allowed Oct width and the lowest note number of a sound production part in a setting table 11e, and if the note number of an Arp note memory 12b is not between the lowest note number and the highest note number, the note number of one octave unit is added to or subtracted from the note number of the Arp note memory 12b. Consequently, the note number of the Arp note memory 12b is corrected to the pitch range between the lowest note number and the highest note number, and thus can be corrected to the sound production pitch range of the timbre of the sound production part, and arpeggios can be outputted using sounds that are more appropriate for an instrument of said timbre.

The present disclosure relates to a method of automatically preparing a MIDI file based on a target MIDI file comprising respective note information about each of a plurality of target notes and a source MIDI file comprising respective note information about each of a plurality of source notes. Each note information comprises pitch information defining a pitch of the note. The method comprises ranking the plurality of target notes based on the pitch of each target note. The method also comprises, for each of the ranked target notes, removing the pitch information from the note information of the target note. The method also comprises, for each of the ranked target notes, replacing the removed pitch information with pitch information of a corresponding source note, whereby the target note has the same pitch as the corresponding source note, forming a plurality of new notes of a new MIDI file.

Embodiments of the present invention provide methods, computer program products, and systems to for automatic key transposition. Embodiments of the present invention can be used to determine compatibility between a known melody capable of being generated by a pitch generation system and a first performance profile associated with a first performer that performs in conjunction with the pitch generation system. Embodiments of the present invention can be further used to determine an appropriate key to update one or more pitches associated with the known melody, to be generated by the pitch generation system during the performance by the first performer, based on the compatibility between the first performance profile and the known melody.

A musical instrument, for example, a keyboard guitar, includes a body, an elongated neck coupled to the body, neck keys disposed on the elongated neck, and an output for transmitting an electrical signal generated by the musical instrument. Activation of each neck key generates an electrical signal at the output representing a pitch associated with a musical note. The musical instrument may also include body keys disposed on the body, and a strum bar that generates an electrical signal at the output representing a pitch associated with a musical note based on which of the body keys are activated during activation of the strum bar. Further, the musical instrument may include a continuous graphic image spanning the front face of the body and the body keys, forming a continuous pattern that is unbroken across a transition between key surfaces of the body keys and the front face of the body.

A musical instrument, for example, a keyboard guitar, includes a body, an elongated neck coupled to the body, neck keys disposed on the elongated neck, and an output for transmitting an electrical signal generated by the musical instrument. Activation of each neck key generates an electrical signal at the output representing a pitch associated with a musical note. The musical instrument may also include body keys disposed on the body, and a strum bar that generates an electrical signal at the output representing a pitch associated with a musical note based on which of the body keys are activated during activation of the strum bar. Further, the musical instrument may include a continuous graphic image spanning the front face of the body and the body keys, forming a continuous pattern that is unbroken across a transition between key surfaces of the body keys and the front face of the body.

Methods and systems are described that are utilized for remotely controlling a musical instrument. A first digital record comprising musical instrument digital commands from a first electronic instrument for a first item of music is accessed. The first digital record is transmitted over a network using a network interface to a remote, second electronic instrument for playback to a first user. Optionally, video data is streamed to a display device of a user while the first digital record is played back by the second electronic instrument. A key change command is transmitted over the network using the network interface to the second electronic instrument to cause the second electronic instrument to playback the first digital record for the first item of music in accordance with the key change command. The key change command may be transmitted during the streaming of the video data.