In summary, the integral visual learning system for electric guitar and similar instruments, to which the present invention refers, has a learning method that is integrated into an application for mobile devices and contains all the learning methodology and knowledge that It will be transmitted to the user to develop the ability to play the instrument. This learning method is connected to a display device on the instrument fretboard by means of a Bluetooth communication device and allows the user to visualize by means of the illumination of transparent resins, the information of notes, chords, musical scales, and other information sent from the learning method. The system also has an augmented reality device that is made up of augmented reality glasses that allow the user to visualize a virtual teacher who provides the user with theoretical information, as well as images superimposed with the position and shape of the fingers of your left/right hand to correctly play the notes, chords and musical scales. Likewise, the system has a feedback device that identifies the notes and/or chords that the user played on the instrument and compares them with the notes and/or chords requested in the exercises contained in the learning method, this allows the users identify the precision with which they performed the exercises and gradually improve until they obtain the required mastery at the different learning levels. Finally, the system has a recharge device for a lithium ion battery that powers the entire system.

A method and an information processing apparatus to generate a digital score file of a song are described. The information processing apparatus includes processing circuitry. The processing circuitry is configured to obtain a candidate audio file satisfying a first condition from audio files of unaccompanied singing of the song without instrumental accompaniment. The processing circuitry is configured to divide the candidate audio file into valid audio segments based on timing information of the song, and extract pieces of music note information from the valid audio segments. Each of the pieces of music note information includes at least one data set of a music note in the song. The data set includes an onset time, a duration, and a music note value of the music note. The processing circuitry is configured to generate the digital score file based on the pieces of music note information.

A digital tuner that determines a tuning target period; receives an audio signal from an instrument to be tuned; obtains a plurality of different segments of the audio signal starting at times that correspond to integer multiples of the target period; produces waveform samples from the segments; and displays of a succession of waveform segments at same display position using said segments so that the shape of the waveform appears to move on the display at a speed and direction directly dependent on a difference of a wave period of the audio signal to be tuned and the tuning target period.

Methods and apparatus to classify media based on a pitch-independent timbre attribute from a media signal are disclosed. An example apparatus includes means for accessing a media signal; and means for: determining a spectrum of audio corresponding to the media signal; and determining a timbre-independent pitch attribute of audio of the media signal based on an inverse transform of a complex argument of a transform of the spectrum.

A transducer apparatus for a labrosone is disclosed, the labrosone having a labrosone resonant chamber. A labrosone speaker delivers a sound signal to the labrosone resonant chamber. A labrosone microphone receives a resultant sound from the labrosone resonant chamber. A mouthpiece microphone receives sound from a labrosone mouthpiece. An electronic processor is connected to the labrosone speaker, and receives signals from the labrosone microphone and the mouthpiece microphone. The electronic processor generates an excitation signal which is delivered as an acoustic excitation signal to the labrosone resonant chamber by the labrosone speaker. The electronic processor uses the signals from the labrosone microphone and the mouthpiece microphone to determine a desired musical note which a player of the labrosone wishes to play. The electronic processor then synthesizes and outputs the desired musical note to an output device, whereby the musical note is played audibly and/or displayed visually to the player.

A hand-held strumming device includes a hollow body, a power source, a motor, a regulator, and a strummer. The power source is disposed in the hollow body. The motor is in electrical communication with the power source. The regulator is in electrical communication with both the motor and the power source. The regulator is configured to selectively adjust a rotational speed of the motor. The strummer is rotatably disposed on the disk. The strummer is configured to be presented to strings of a stringed instrument upon rotation of the motor to strum the strings.

With reference to FIG. 7a the present invention relates to transducer apparatus (200) for use with a reed instrument (201) having an air chamber (15) forming a resonant cavity whose resonance characteristics are controlled by opening and closing of tone holes (17A, 17B) connecting the air chamber to the exterior of the reed instrument. The transducer apparatus comprises attachment means (202) for releasably securing the transducer apparatus to a mouthpiece (201) of the reed instrument in place of a reed. A reed replacement section (203) has a housing with an abutment surface for abutting a surface part of the mouthpiece which would be abutted by a reed secured to the mouthpiece. An air passage extends through the housing of the reed replacement section (203) from an air inlet (211) through which a player of the instrument can blow to an air outlet (213) through which air blown by the player is delivered to atmosphere, without passing through the air chamber (15) within the reed instrument. A speaker (208) is supported by the housing and delivers sound to the air chamber (15). An air chamber microphone (209) is supported by the housing and receives sound in the air chamber (15). An electronic processing unit (204) has: an excitation unit (101) which produces an excitation signal for driving the speaker (208); a processor (102) for receiving a measurement signal produced by the microphone and for detecting from the measurement signal a musical note played by the instrument; a synthesizer (220) for generating an electronic signal embodying a musical note which corresponds to the detected musical note; and output means (103) for transmitting the musical note generated by the synthesizer to a receiver external of the transducer apparatus. The invention also relates to a system for representing the sounds of a reed instrument having the components of the transducer apparatus, to an electronic system for determining a musical note played by a reed instrument having the components of the transducer apparatus and to a method of practising playing of a reed instrument comprising use of the components of the transducer apparatus.

An acoustic device includes an audio recording playback unit, an analysis unit, and an acoustic effect imparting unit. The audio recording playback unit records and plays back string independent acoustic signals for each string independent acoustic signal. The string independent acoustic signals respectively correspond to different strings of a stringed instrument and being independent from each other. The analysis unit analyzes at least one string independent acoustic signal from among the recorded string independent acoustic signals. The acoustic effect imparting unit imparts an acoustic effect to the at least one string independent acoustic signal for each string independent acoustic signal, based on a result of the analysis by the analysis unit.

Methods and apparatus to classify media based on a pitch-independent timbre attribute from a media signal are disclosed. An example apparatus includes means for accessing a media signal; and means for: determining a spectrum of audio corresponding to the media signal; and determining a timbre-independent pitch attribute of audio of the media signal based on an inverse transform of a complex argument of a transform of the spectrum.

A method for performing melody detection comprises interpreting the global perceptual effect of all the sounds at once, to determine what is the melody actually perceived by the human ear, and providing a music sheet or a text printout including a time sequence of single notes describing that melody.