A dataset representing repeated sounds within a musical composition recorded on an audio track may be constructed. An audio track duration of an audio track may be partitioned into partitions of a partition size. A current partition may be compared to remaining partitions of the audio track. Audio information for the current partition may be correlated to audio information for remaining partitions to determine a correlated partition for the current partition from among the remaining partitions of the track duration. The correlated partition determined may be identified as most likely to represent the same sound as the current partition. This comparison process may be performed iteratively, for individual ones of the remaining partitions. Correlation results of the comparison process may be recorded to represent the partition time period of the correlated partition as a function of partition time period of the current partition.

An audio correction apparatus and an audio correction method. The audio correction method includes: receiving audio data, which may be input by a user and/or an instrument uttering sounds; detecting onset information by analyzing harmonic components of the received audio data; detecting pitch information of the received audio data based on the detected onset information; comparing the audio data with reference audio data and aligning the two based on the detected onset information and the detected pitch information; and correcting the aligned audio data to match the reference audio data.

A device is provided as part of a system, the device being for capturing vibrations produced by an object such as a musical instrument. Via a fixation element, the device is fixed to a drum. The device has a sensor spaced apart from a surface of the drum, located relative to the drum, and a magnet adjacent the sensor. The fixation element transmits vibrations from its fixation point on the drum to the magnet. Vibrations from the surface of the drum and from the magnet are transmitted to the sensor. A method may further be provided for interpreting an audio input, such as the output of the sensors within the system, the method comprising identifying an audio event or grouping of audio events within audio data, generating a model of the audio event that includes a representation of a timbre characteristic, and comparing that representation to expected representations.

A method for automatically starting an audio recording that includes receiving audio data and dividing the audio data into a first set of consecutive segments and a second set of consecutive segments that occur after the first set. The method further includes analyzing the first set of segments by measuring an average energy and peak value for each segment of the first set and determining a silence score therefrom, and analyzing the second set of segments by measuring an average energy and peak value for each segment of the second set and determining an music score therefrom. The method begins a recording of the audio data if the silence score is above a first predetermined value and the music score is above a second predetermined value.

A method for visually representing a recording session on a display, the method including displaying, by a processor on a display device, an icon having a shape, receiving audio data, and generating pulses that radiate outwardly, concentrically, and separately from the icon. A timing of the pulses may correspond to audio events within the audio data, a starting size of the pulses may correspond to an amplitude of the audio events within the audio data, and a spacing between consecutive pulses may correspond to a timing between the audio events within the audio data. The radiating pulses can be circular and may expand outwardly from the icon. The audio events may include audio transients. The icon can be circular, polygonal, three-dimensional (e.g., spherical), or the like.

Performance information of main music is sequentially acquired, and an accent position of the music is determined. An automatic accompaniment is progressed based on accompaniment pattern data. Upon determination that the current time point coincides with the accent position, an accompaniment event whose tone generation timing arrives within a predetermined time range following the current time point is extracted from the accompaniment pattern data, the tone generation timing of the extracted accompaniment event is shifted to the current time point, and then, accompaniment data is created based on the accompaniment event having the tone generation timing thus shifted. If there is no accompaniment event whose tone generation timing arrives at the current time point or within the predetermined time range following the current time point, automatic accompaniment data with the current time point set as its tone generation timing is additionally created.

Arranged accompaniment data are created by: acquiring original performance information; extracting, from the acquired original performance information, one or more accent positions in a music piece represented by the acquired original performance information; acquiring existing accompaniment pattern data; and adjusting time positions of one or more accompaniment notes, which are to be generated on the basis of the acquired accompaniment pattern data, so as to coincide with the extracted one or more accent positions. In this way, it is possible to create accompaniment data matching accent positions (rhythmic elements) of the music piece represented by the original performance information and thereby automatically make a musical arrangement with respective characteristics of the existing accompaniment pattern data and original performance information remaining therein.

A sound control device includes an obtainer, a determiner, an identifier, and an instructor. The obtainer obtains performance information. The determiner identifies a note-on or a note-off based on the performance information. The identifier identifies, from lyrics data, a syllable corresponding to a timing at which the determiner identified the note-on. The lyrics data includes a chronological arrangement of a plurality of syllables to be pronounced. The instructor instructs the syllable identified by the identifier to start being pronounced at a timing corresponding to the note-on, and causes at least one phoneme among phonemes constituting the identified syllable to start being pronounced at a timing corresponding to the note-off.

An information processing apparatus is provided which includes a metadata extraction unit for analyzing an audio signal in which a plurality of instrument sounds are present in a mixed manner and for extracting, as a feature quantity of the audio signal, metadata changing along with passing of a playing time, and a player parameter determination unit for determining, based on the metadata extracted by the metadata extraction unit, a player parameter for controlling a movement of a player object corresponding to each instrument sound.

As part of a system, a device is provided as part of a system, the device being for capturing vibrations produced by an object such as a musical instrument. The device has a first sensor placed in contact with a surface of the drum, such as a rim of the drum, and a second sensor placed at a fixed location relative to the drum, but not touching the drum. A method may be provided for interpreting the output of the sensors within the system, the method comprising identifying the onset of an audio event in audio data, selecting a window in the data for analysis, applying transforms to generate a representation of the audio event, and comparing that representation to expected representations in a model.