摘要:
To tune notes in a chord, activated notes tuned to a first scale are received A sustained chord is determined as a group of activated notes whose time of activation exceeds a threshold A chord type is determined from the group of the activated notes of the sustained chord. The chord interval positions occupied by each of the notes of the sustained chord, and the order and spread of the interval positions are determined. Selected notes of the group are retuned based on the determined chord type and order and spread of the interval positions in the chord.
摘要:
An automatic composition apparatus includes a processing unit. The processing unit performs a note pitch shift process, a matching-level calculating process and a melody generating process. The note pitch shift process performs pitch shift on pitches of individual note data items included in an input phrase. The matching-level calculating process calculates a matching level between a phrase including note data items subjected to the pitch shift and a designated chord progression data item, with reference to a plurality of note connection rules each of which defines a connection relation of consecutive note types, if the pitch shift is performed. The melody generating process generates a melody based on the phrase which includes the note data items subjected to the pitch shift and which is selected based on the calculated matching level.
摘要:
A method of manipulating a complex waveform by considering the harmonic and partial frequencies as moving targets over time in both amplitude and frequency and adjusting the moving targets by moving modifiers in both amplitude and frequency. The manipulation of harmonic frequencies and the synthesis of harmonic frequencies are based on the harmonic rank. The modifiers move with the movement of the frequencies based on rank. Harmonic transformation modifies, by rank, the waveform from one source to a waveform of a second or target source. Harmonics and other partials accentuation identifies each of the frequencies and its relationship to adjacent frequencies as well as fixed or moving thresholds and make the appropriate adjustment. Interpolation is also disclosed as well as models which imitate natural harmonics.
摘要:
A pitch-control system automatically corrects the pitch in accordance with a harmony-dependent, variable key, in particular the harmonic key, for a musical instrument having an input device for inputting note input signals in a predetermined fixed key, in particular the tempered key, and a sound-generating device to which the note input signals are applied. The pitch-control system comprises a chord-recognition circuit which determines, for each input signal pattern corresponding to a chord, whether the input signal pattern corresponds to a chord pattern in a predeterined plurality of chord patterns, a signal pattern memory circuit (34) which records a signal pattern for each chord pattern in the predetermined plurality of chord patterns, and a control circuit (32) which, when the chord recognition circuit determines that an input singal pattern corresponding to one of the predetermined chord patterns is applied, causes the signal pattern memory circuit (34) to apply the signal pattern corresponding to the chord pattern so determined to the tone-generating device (20) for generation of the chord corresponding to the variable key.
摘要:
An automatic composition apparatus includes a processing unit. The processing unit performs (i) a calculation process of calculating a matching level of each chord progression data item for a motif including a plurality of note data items, with reference to a plurality of note connection rules each of which defines a connection relation of consecutive note types, and (ii) a melody generating process of generating a melody based on the motif and the chord progression data items which matching levels are calculated.
摘要:
A method of tuning notes in a chord comprising: receiving activated notes tuned to a first scale; determining a sustained chord as a group of activated notes whose time of activation exceeds a threshold; determining a chord type from the group of the activated notes of the sustained chord; determining the chord interval positions occupied by each of the notes of the sustained chord, and the order and spread of the interval positions; and returning selected notes of the group based on the determined chord type and order and spread of the interval positions in the chord.
摘要:
Apparatus for adjusting the tuning of a musical instrument to cause the instrument to sound in just intonation while the instrument is being played comprises a data base in memory (52) for storing an array of just intonation tone identifiers (54). The tone identifiers in the array are arranged by key, chordal root and tone according to just intonation relationships defined by the ratios of a scale selected by the musician. A selector unit (20) is provided for enabling a musician to select a key (22) and/or a chordal root (24), as a result of which a CPU (48) retrieves from the array a set of tone identifiers in just intonation corresponding to the selected key or chordal root and transmits them to the sounding means of the instrument. The system may be used with electronic tone generators (42), instruments with strings (65), and organ pipes (102).