Abstract: Disclosed are systems, methods, and non-transitory computer-readable storage media for scrolling a virtual keyboard on a touch screen device including a display. A first aspect allows detecting a user contact swipe motion in a predetermined direction along said keyboard, scrolling said keyboard across said display in accordance with said motion, and stopping said scrolling upon termination of user contact swipe motion. A second aspect allows scrolling of a virtual keyboard to snap to an intelligent position based on a song key or relative minor of the song key. A third aspect allows a note to be held when a user's finger remains in contact with the display even though the finger is no longer in contact with a key linked to the note on the keyboard as a result of scrolling.

Abstract: Systems, methods, and non-transitory computer-readable storage media generate customized arpeggios. An exemplary method includes providing a storage medium, including a database storing data corresponding to an arpeggio pattern to be played by a virtual instrument. The method further includes receiving a plurality of user inputs that enable a user to select a desired set of musical notes (e.g. a chord) other than the notes (e.g. chord) used to create the arpeggio stored in the database, without having to re-enter the note sequence. The method then includes creating the desired arpeggio for the selected set of notes by applying the stored arpeggio data from the database to the entered notes, and playing the created desired arpeggio.

Abstract: Systems, methods, and non-transitory computer-readable storage media generate customized arpeggios. An exemplary method includes providing a storage medium, including a database storing data corresponding to an arpeggio pattern to be played by a virtual instrument. The method further includes receiving a plurality of user inputs that enable a user to select a desired set of musical notes (e.g. a chord) other than the notes (e.g. chord) used to create the arpeggio stored in the database, without having to re-enter the note sequence.

Abstract: A system and method that enables a user to generate and manipulate string-instrument chord grids in a digital audio workstation. The system and method for generating a string-instrument chord grid includes receiving first data input and second data input. The first data input can include a chord root note and/or a position for one or more fingering dots. The second data input can include an instrument type and our tuning for one or more strings. Using the received data input, a processor generates an entered string-instrument chord based and displays the entered string-instrument chord on a grid. The processor can also generate and display the musical name of the entered string-instrument chord.

Abstract: Disclosed are systems, methods, and non-transitory computer-readable storage media for scrolling a virtual keyboard on a touch screen device including a display. A first aspect allows detecting a user contact swipe motion in a predetermined direction along said keyboard, scrolling said keyboard across said display in accordance with said motion, and stopping said scrolling upon termination of user contact swipe motion. A second aspect allows scrolling of a virtual keyboard to snap to an intelligent position based on a song key or relative minor of the song key. A third aspect allows a note to be held when a user's finger remains in contact with the display even though the finger is no longer in contact with a key linked to the note on the keyboard as a result of scrolling.

Abstract: Disclosed are systems, methods, and non-transitory computer-readable storage media for scrolling a virtual keyboard on a touch screen device including a display. A first aspect allows detecting a user contact swipe motion in a predetermined direction along said keyboard, scrolling said keyboard across said display in accordance with said motion, and stopping said scrolling upon termination of user contact swipe motion. A second aspect allows scrolling of a virtual keyboard to snap to an intelligent position based on a song key or relative minor of the song key. A third aspect allows a note to be held when a user's finger remains in contact with the display even though the finger is no longer in contact with a key linked to the note on the keyboard as a result of scrolling.

Abstract: A system and method that enables a user to generate and manipulate string-instrument chord grids in a digital audio workstation. The system and method for generating a string-instrument chord grid includes receiving first data input and second data input. The first data input can include a chord root note and/or a position for one or more fingering dots. The second data input can include an instrument type and our tuning for one or more strings. Using the received data input, a processor generates an entered string-instrument chord based and displays the entered string-instrument chord on a grid. The processor can also generate and display the musical name of the entered string-instrument chord.

Abstract: The disclosed technology provides for determining whether an audio stream is monophonic or polyphonic. An exemplary method includes analyzing and detecting frequency peaks in a portion of the audio stream. The method includes determining whether the portion of the audio stream is monophonic, by determining if all detected peaks are integer intervals of a lowest detected frequency peak. The method then includes determining that the audio stream portion is monophonic if a greatest common devisor frequency exists between a threshold frequency and the lowest detected frequency peak, wherein each detected peak is an integer multiple of the greatest common devisor frequency. The method includes determining that the portion of the audio stream is polyphonic if any one of the detected peaks is not substantially an integer multiple of the lowest detected frequency and if no greatest common devisor frequency exists between the threshold frequency and the lowest detected frequency peak.

Abstract: A system and method that enables a user to generate and manipulate string-instrument chord grids in a digital audio workstation. The system and method for generating a string-instrument chord grid includes receiving first data input and second data input. The first data input can include a chord root note and/or a position for one or more fingering dots. The second data input can include an instrument type and our tuning for one or more strings. Using the received data input, a processor generates an entered string-instrument chord based and displays the entered string-instrument chord on a grid. The processor can also generate and display the musical name of the entered string-instrument chord.

Abstract: Disclosed are systems, methods, and non-transitory computer-readable storage media for scrolling a virtual keyboard on a touch screen device including a display. A first aspect allows detecting a user contact swipe motion in a predetermined direction along said keyboard, scrolling said keyboard across said display in accordance with said motion, and stopping said scrolling upon termination of user contact swipe motion. A second aspect allows scrolling of a virtual keyboard to snap to an intelligent position based on a song key or relative minor of the song key. A third aspect allows a note to be held when a user's finger remains in contact with the display even though the finger is no longer in contact with a key linked to the note on the keyboard as a result of scrolling.

Abstract: The disclosed technology provides for determining whether an audio stream is monophonic or polyphonic. An exemplary method includes analyzing and detecting frequency peaks in a portion of the audio stream. The method includes determining whether the portion of the audio stream is monophonic, by determining if all detected peaks are integer intervals of a lowest detected frequency peak. The method then includes determining that the audio stream portion is monophonic if a greatest common devisor frequency exists between a threshold frequency and the lowest detected frequency peak, wherein each detected peak is an integer multiple of the greatest common devisor frequency. The method includes determining that the portion of the audio stream is polyphonic if any one of the detected peaks is not substantially an integer multiple of the lowest detected frequency and if no greatest common devisor frequency exists between the threshold frequency and the lowest detected frequency peak.

Abstract: A system and method that enables a user to generate and manipulate string-instrument chord grids in a digital audio workstation. The system and method for generating a string-instrument chord grid includes receiving first data input and second data input. The first data input can include a chord root note and/or a position for one or more fingering dots. The second data input can include an instrument type and our tuning for one or more strings. Using the received data input, a processor generates an entered string-instrument chord based and displays the entered string-instrument chord on a grid. The processor can also generate and display the musical name of the entered string-instrument chord.

Abstract: A method and apparatus for shifting pitches of audio signals to achieve desired pitch relationships between the audio signals. Two or more audio signals are received. The audio signals may be in either a digital or analog format. One of the input audio signals is selected to be a reference signal. For each of the other audio signals, the pitch of the other audio signal is compared with the pitch of the reference signal to determine a relative pitch relationship. For each of the other signals, an adjustment is determined to bring the relationship to a desired pitch relationship. Based on the adjustment, the pitch of at least one of the audio signals is adjusted to achieve the desired pitch relationship between the audio signals.

Abstract: A method and apparatus for shifting pitches of audio signals to achieve desired pitch relationships between the audio signals. Two or more audio signals are received. The audio signals may be in either a digital or analog format. One of the input audio signals is selected to be a reference signal. For each of the other audio signals, the pitch of the other audio signal is compared with the pitch of the reference signal to determine a relative pitch relationship. For each of the other signals, an adjustment is determined to bring the relationship to a desired pitch relationship. Based on the adjustment, the pitch of at least one of the audio signals is adjusted to achieve the desired pitch relationship between the audio signals.