Musical performance-related information output device, system including musical performance-related information output device, and electronic musical instrument

A musical performance-related information output device comprising:na musical performance-related information acquiring section configured to acquire musical performance-related information related to a musical performance of a performer;a superimposing section configured to superimpose the musical performance-related information on an analog audio signal generated in accordance with a musical performance manipulation of the performer so that a modulated component of the musical performance-related information is included in a band higher than a frequency component of the analog audio signal; andan output section that outputs the analog audio signal on which the superimposing section superimposes the musical performance-related information.

A musical performance system comprising:na musical performance-related information output device; anda reproducing device,wherein the musical performance-related information output device includes:a musical performance-related information acquiring section configured to acquire musical performance-related information related to a musical performance of a performer;a superimposing section configured to superimpose the musical performance-related information on an analog audio signal generated in accordance with a musical performance manipulation of the performer so that a modulated component of the musical performance-related information is included in a band higher than a frequency component of the analog audio signal; andan output section that outputs the analog audio signal on which the superimposing section superimposes the musical performance-related information, andwherein the reproducing device includes:an input section for inputting the analog audio signal output from the output section of the musical performance-related information output device;a decoding section configured to extract the musical performance-related information from the analog audio signal input to the input section and decode the musical performance-related information; anda synchronous output section that synchronously outputs the analog audio signal and the musical performance information on the basis of the time required for superimposition and decoding of the musical performance information.

A sound processing system comprising:na musical performance-related information output device; anda decoding device configured to decode the tempo information,wherein the musical performance-related information output device includes:a musical performance-related information acquiring section configured to acquire musical performance-related information related to a musical performance of a performer;a superimposing section configured to superimpose the musical performance-related information on an analog audio signal generated in accordance with a musical performance manipulation of the performer so that a modulated component of the musical performance-related information is included in a band higher than a frequency component of the analog audio signal; andan output section that outputs the analog audio signal on which the superimposing section superimposes the musical performance-related information,wherein the musical performance-related information acquiring section acquires tempo information indicating a musical performance tempo as the musical performance-related information,wherein the superimposing section of the musical performance-related information output device superimposes pseudo noise on the analog audio signal with a timing based on the musical performance tempo to superimpose the tempo information, andwherein the decoding device includes:an input section for inputting the analog audio signal; anda decoding section configured to calculate a correlation between the analog audio signal input to the input section and the pseudo noise, and to decode the tempo information on the basis of a peak-generated timing of the correlation.

A method of outputting musical performance-related information using a musical performance-related information output device, the method comprising:na musical performance-related information acquiring step of acquiring musical performance-related information related to a musical performance of a performer;a superimposing step of superimposing the musical performance-related information on an analog audio signal generated in accordance with a musical performance manipulation of the performer so that a modulated component of the musical performance-related information is included in a band higher than a frequency component of the analog audio signal; andan output step of outputting the analog audio signal on which the superimposing section superimposes the musical performance-related information.

A musical performance-related information output device comprising:na musical performance-related information acquiring section configured to acquire musical performance-related information related to a musical performance of a performer;a superimposing section configured to superimpose the musical performance-related information on an audio signal generated in accordance with a musical performance manipulation of the performer so that a modulated component of the musical performance-related information is included in a band; andan output section configured to output the audio signal on which the superimposing section superimposes the musical performance-related information,wherein the superimposing section includes:a spread code generating section configured to generate a spread code having a predetermined period;a modulating section configured to phase-modulate the spread code in each period based on the musical performance information; andan adding section configured to mix the phase-modulated spread code into the audio signal.

An audio reproducing device comprising:nan acquiring section configured to acquire an audio signal on which musical performance information is superimposed;a decoding section configured to extract and decode the musical performance information from the audio signal; anda synchronous output section configured to output the audio signal synchronously with the musical performance information on the basis of a time required for superimposition and decoding of the musical performance information.

An audio decoding device comprising:nan acquiring section configured to acquire an audio signal on which musical performance-related information is superimposed;a decoding section configured to calculate a correlation between the audio signal and a spread code, and to decode as data code the musical performance-related information from the audio signal; andan outputting section configured to output the decoded musical performance-related information.

A method of controlling a musical performance-related information output device, the method comprising:nan acquiring step of acquiring musical performance-related information related to a musical performance of a performer;a superimposing step of superimposing the musical performance-related information on an audio signal generated in accordance with a musical performance manipulation of the performer so that a modulated component of the musical performance-related information is included in a band; andan outputting step of outputting the audio signal on which the musical performance-related information is superimposed,wherein the superimposing step comprises:a generating step of generating a spread code having a predetermined period;a phase-modulating step of phase-modulating the spread code in each period based on the musical performance information; anda mixing step of mixing the phase-modulated spread code into the audio signal.

A non-transitory computer-readable storage medium storing a program executable by a computer to execute a method of controlling a musical performance-related information output device, the method comprising:nan acquiring step of acquiring musical performance-related information related to a musical performance of a performer;a superimposing step of superimposing the musical performance-related information on an audio signal generated in accordance with a musical performance manipulation of the performer so that a modulated component of the musical performance-related information is included in a band; andan outputting step of outputting the audio signal on which the musical performance-related information is superimposed,wherein the superimposing step comprises:a generating step of generating a spread code having a predetermined period;a phase-modulating step of phase-modulating the spread code in each period based on the musical performance information; anda mixing step of mixing the phase-modulated spread code into the audio signal.