A method for detecting a melody of an audio signal, including: dividing the audio signal into a plurality of audio segments based on a beat, detecting a pitch frequency of each frame of audio sub-signal in each of the audio segments, and estimating a pitch value of each of the audio segments based on the pitch frequency; determining a pitch name corresponding to each of the audio segments based on a frequency range of the pitch value; acquiring a musical scale of the audio signal by estimating a tonality of the audio signal based on the pitch name of each of the audio segments; and determining a melody of the audio signal based on a frequency interval of the pitch value of each of the audio segments in the musical scale.

A system and method to generate and implement digital tuning files based on p-smooth number sequences for use with a digital musical instrument is provided. A p-smooth number sequence is generated and a subset of p-smooth numbers from the sequence is chosen as a musical octave of musical note frequencies. Each note within the octave is designated as a tonic, and each tonic is used to generate additional musical octaves and corresponding musical note notations. The musical octaves and corresponding musical note notations are stored into the digital memory of the digital musical instrument, and the instrument's native musical note mappings are remapped to the musical octaves and corresponding musical note notations from the digital file.

The embodiment relates to systems and methods structured to deliver acoustic and visual energies to be received by living beings, and, more particularly the energies received by living beings can be configured, composed, and/or designed to be delivered to address a plurality of conditions including enjoyment. The energies can be deployed by using various algorithms and can include tones, tuning, rhythms, sound waves, harmonies, melodies, chord progression and instrument arrangement to deliver the energies preferentially to different parts of a living being's body, such as but not limited to, right and/or left ears. The algorithms can include variations in Pythagorean tuning and just and pure intonation, monaural and binaural beats for brain wave entrainment, Solfeggio Frequencies, Fibonacci Sequencing, and/or carrier waves and isochronic tones.

A digital sight-singing piano is disclosed with a fixed-solfge keyboard, continuous keys and adjustable tones by kneading piano keys, wherein the key can be varied continuously and the frequency of a piano key can be slightly adjusted by kneading the piano key during playing. The keyboard of the digital sight-singing piano has fixed solfge, wherein no matter what key is used for playing, the piano keys in a solfge key set always have the same correspondence to the solfge syllables of the numbered musical notation in one octave. A color graphic vector numbered musical notation is also disclosed, wherein extended solfge is used to describe pitch, different colors are used to indicate the positions of the piano keys to press, notation frames with fixed width are used to represent the beat unit, and font (i.e., bold or not) of musical notes are used to show the strength of pressing piano keys. The color graphic vector numbered musical notation is suitable for computer-aided notation. It can be exhibited in several different types and provide multi-dimension playing information. The color graphic vector numbered musical notation can also be combined with the fixed-solfge keyboard to facilitate sight-singing and make it easy to learn to play the piano.

A system and method to generate and implement digital tuning files based on p-smooth number sequences for use with a digital musical instrument is provided. A p-smooth number sequence is generated and a subset of p-smooth numbers from the sequence is chosen as a musical octave of musical note frequencies. Each note within the octave is designated as a tonic, and each tonic is used to generate additional musical octaves and corresponding musical note notations. The musical octaves and corresponding musical note notations are stored into the digital memory of the digital musical instrument, and the instrument's native musical note mappings are remapped to the musical octaves and corresponding musical note notations from the digital file.

A digital sight-singing piano is disclosed with a fixed-solfge keyboard, continuous keys and adjustable tones by kneading piano keys, wherein the key can be varied continuously and the frequency of a piano key can be slightly adjusted by kneading the piano key during playing. The keyboard of the digital sight-singing piano has fixed solfge, wherein no matter what key is used for playing, the piano keys in a solfge key set always have the same correspondence to the solfge syllables of the numbered musical notation in one octave. A color graphic vector numbered musical notation is also disclosed, wherein extended solfge is used to describe pitch, different colors are used to indicate the positions of the piano keys to press, notation frames with fixed width are used to represent the beat unit, and font (i.e., bold or not) of musical notes are used to show the strength of pressing piano keys. The color graphic vector numbered musical notation is suitable for computer-aided notation. It can be exhibited in several different types and provide multi-dimension playing information. The color graphic vector numbered musical notation can also be combined with the fixed-solfge keyboard to facilitate sight-singing and make it easy to learn to play the piano.