An apparatus for analyzing audio includes a feature acquirer, an output apparatus, at least one memory, and at least one processor. The at least one processor is configured to execute a program stored in the at least one memory. The at least one processor is also configured to cause the feature acquirer to acquire a series of feature amounts of an audio signal. The at least one processor is also configured to generate boundary data by inputting the acquired series of feature amounts into a boundary estimation model that has learned relationships between: (i) a series of feature amounts, and (ii) boundary data representative of boundaries, each of the boundaries being between consecutive periods in each of which a chord is continuous.

Real-time jamming is automatically assisted for musicians. A real-time audio signal is received of played music that is played by at least one person. Beat is tracked of the played music from the real-time audio signal and accordingly a time of a next beat is predicted. At least one of chords; notes; and drum sounds is recognized from the real-time audio signal and repetitions in the played music are accordingly detected. A next development is predicted in the played music, based on the detected repetitions, including at least one of chords; notes; and drum sounds that will be played next, and respective timing based on the predicted time of the next beat. A real-time output is produced based on the predicted next development in the played music.

An accompaniment sound generating device includes a specifier, an accompaniment sound generator, and an accompaniment sound outputter. The specifier specifies a plurality of musical performance parts for which accompaniment sounds are generated based on an input musical performance sound. The accompaniment sound generator generates the accompaniment sounds that belong to the plurality of specified musical performance parts for each musical performance sound. The accompaniment sound outputter outputs the accompaniment sounds generated for the plurality of musical performance parts with timing for generating the accompaniment sounds aligned with timing for generating musical performance sounds.

A chord judging apparatus for judging chords of a musical piece, is provided with a processor and a memory for storing data of the musical piece, wherein the processor specifies plural segments in the data of the musical piece, estimates a tonality of each of the specified segments based on component tones included in the segment, and judges a chord of the plural segments of the musical piece based on modulation in tonality, when modulation is introduced in the estimated tonalities of the plural segments.

There is provided an information processing method including analyzing a beat of input music, extracting a plurality of unit images from an input image, and generating, by a processor, editing information for switching the extracted unit images depending on the analyzed beat.

A chord identification method selects from among a plurality of chord identifiers a chord identifier that corresponds to an attribute of a piece of music represented by an audio signal, where the plurality of chord identifiers corresponds to respective ones of a plurality of attributes relating to pieces of music; and identifies a chord for the audio signal by applying a feature amount of the audio signal to the selected chord identifier.

A chord estimation apparatus estimates a first chord from an audio signal, and estimates a second chord by inputting the estimated first chord to a trained model that has learned a chord modification tendency.

[Object] To propose an image processing method, image processing apparatus and program which are capable of exciting the emotions of a viewer more effectively. [Solution] An information processing method including: analyzing a beat of input music; extracting a plurality of unit images from an input image; and generating, by a processor, editing information for switching the extracted unit images depending on the analyzed beat.

The present invention relates to a piano key press processor for a piano keyboard, which analyzes the key press characteristics of simple chord voicings during play, flags the pressed keys having specific such characteristics, and repurposes those flagged keys, so as to play the chord in a more advanced chord voicing.

For example, provided is an information processing device with which the entire performance can be felt really visually.

The information processing device TB according to the present invention includes a processor performing a reception process of receiving input of performance information including pitch information, a first image output process of outputting a first image according to the received performance information, a performance determination process of determining at least any of tonality, a chord type, and a pitch name on the basis of the received performance information, and second image output process of outputting a second image according to a result determined in the performance determination process.