The present invention provides an automatic mixing device, including: a music feature calculator. Input music of the music feature calculator includes melody, bass, percussion music, and vocal tracks; the music feature calculator selects one or more of the melody track, bass track, percussion track, and vocal tracks, and calculates one or more features of the input music, including beat point time, a chord at a downbeat, a chroma vector at a downbeat, sound energy at a downbeat, tonality and tempo. The automatic mixing device of the present invention can calculate music features in the music according to different audio tracks and automatically calculate mixing points according to the music features, thereby achieving the automation of mixing and solving the problem of low mixing efficiency, unnatural mixing effect, and the like in the prior art.

A method for electronic music generation comprising electronically applying one or more functions that change one or more compositional elements of a musical input in a first tonality or other musical representation to generate a musical output in a second tonality or other musical representation and recording data corresponding to the musical output in a recording medium or rendering such musical Transformations to a reproductive medium such as an amplifier and speakers or headphones.

The present disclosure provides a method for mixing audio, pertaining to the technical field of multimedia. The method includes: after acquiring an audio material to be mixed, determining a beat feature of a target audio, performing beat adjustment on the audio material based on the beat feature of the target audio; and performing audio mixing on the target audio based on the audio material adjusted by the beat adjustment.

A chord information extraction device includes a character group extractor, a determiner and a corrector. The character group extractor extracts a character group corresponding to chord information from score image data representing a music score. The determiner determines whether the character group extracted by the character group extractor follows a predetermined chord notation rule. In a case where the character group extracted by the character group extractor does not follow the chord notation rule, the corrector corrects the extracted character group to follow the chord notation rule.

A system and method for making musical decisions is provided. The approach is based on algorithms which compose music driven by an input of desired emotional tension over time. A method for abstraction and quantification of musical structures is detailed, as well as the application of this method in a generative algorithm that produces musical sequences. The overall goal of this method is to use a set of abstractions and guidelines to generate emotionally appropriate new music in real time.

A music composition, editing, and playback system and method provides a user interface design based on geometric interpretation of music theory replacing traditional modern music notation with geometric shapes including chords represented by polygons that are colored with colors or hues.

The invention relates to a user interface for a musical instrument, in particular an electronic or virtual musical instrument, for playing combined sequences of chords and tunes, comprising a key matrix (1) having a plurality of zones 111, 121, . . . ; 112, 122, . . . ; 11n, 12n, . . . that can be activated, these zones being arranged in columns and rows, each row of activatable zone 111, 121, . . . ; 112, 122, . . . ; 11n, 12n, . . . forming a region 101, 102, . . . , each region 101, 102, . . . being associated with a basic chord that preferably is a chord of a scale, preferably of a diatonic scale, the chord being specific of the scale, and each zone 111, 121, . . . ; 112, 122, . . . ; 11n, 12n, . . . being associated with a musical tone of the tune, which is preferably a musical tone of the tune of the scale. The user interface is designed to produce, when a zone 111, 121, . . . ; 112, 122, . . . ; 11n, 12n, . . . in a region 101, 102, . . . is activated, a musical tone-producing command in accordance with the activated zone 111, 121, . . . ; 112, 122, . . . ; 11n, 12n, . . . and region 101, 102, . . . , and the musical tone-producing command comprises at least one basic chord note command of a pitch that is contained in the basic chord associated with the activated region 101, 102, . . . and comprises a tune note command the pitch of which corresponds to the musical tone of the tune of the activated zone 111, 121, . . . ; 112, 122, . . . ; 11n, 12n, . . . . The invention also relates to a musical instrument, a method for producing combined sequences of chords and tunes, and a computer-readable storage medium.

Various mechanisms and methods for altering sound output from an unmanned aerial vehicle (UAV) are disclosed. The UAV can have a drive system comprising a motor or a plurality of motors, and a processor operatively coupled to the drive system to control operation of the drive system. The UAV can further have a plurality of propellers that are rotatably drivable by the drive system, the plurality of propellers having physical characteristics such that, when drivingly rotated to maintain the UAV in stable flight, a first of the plurality of propellers emits a first note, and a second of the plurality of propellers emits a second, different note, a combination of the first and second notes producing a consonant sound.

A musical keyboard interface capable of controlling either a string instrument or synthesizer controller includes a small, consistent keyboard interface that moves with each hand along one or both edges of a stationary ruler. The ruler segments measure the static location of each note in chromatic order. The keys are oriented in length perpendicular to the length of the ruler and each key is as wide as each ruler segment. As the keyboard moves along the ruler and its keys realign with new ruler segments, the keys become able to articulate the notes indicated by their position. The transformation is gradual, smoothly sliding notes and chords in varying magnitudes and directions simultaneously.

A system of playing media content items determines transitions between pairs of media content items by determining desirable locations in which transitions across the pairs of media content items occur. The system uses a plurality of track features of media content items and determines such track features of each media content item associated with each of transition point candidates, such as beat positions, of that media content item. The system determines similarity in the plurality of track features between the transition point candidates of a first media content item and the transition point candidates for a second media content item being played subsequent to the first media content item. The transition points or portions of the first and second media content items are selected from the transition point candidates for the first and second media content items based on the similarity results.