Method of producing light animation with rhythm of music
A method of producing a light animation with a rhythm of music is disclosed. An electronic device performs Fourier series transform on a sound signal of music produced from at least one musical instrument, so as to obtain a rhythm diagram of the sound signal. The operation to extract a rhythm change point of the rhythm diagram is performed, and when the intensity of the rhythm diagram has a change from increase to decrease, the time point of the change is used as the rhythm change point and the electronic device transmits a lighting control signal to a light emitting device. After receiving the lighting control signal, the light emitting device emits light based on the lighting control signal, and the light emitted from the light emitting device continues to form the light animation, thereby improving overall performance appreciation of the music for audiences.
1. A method of producing light animation with rhythm of music, comprising steps:
(A), performing, by an electronic device, Fourier series transform on a sound signal, produced from at least one musical instrument, of the music, to obtain a rhythm diagram of the sound signal, wherein the rhythm diagram presents variation of intensity of the sound signal over time at least one frequency;
(B), performing, by the electronic device, an operation to extract a rhythm change point of the rhythm diagram, wherein when the intensity presented in the rhythm diagram is continuously increased over time, the operation is not performed, and when the intensity presented in the rhythm diagram has a change from increase to decrease, a time point of the change is used as the rhythm change point and the electronic device transmits a lighting control signal to the light emitting device; and
(C), emitting light, by the light emitting device based on the lighting control signal after the light emitting device receives the lighting control signal, wherein the light emitted from the light emitting device continues to form light animation.
2. The method according to claim 1 , wherein the electronic device is a desktop computer, a notebook computer, a tablet computer, a smartphone, or a personal digital assistant.
3. The method according to claim 1 , further comprising a step (A 01 ) before the step (B),
(A 01 ) determining, by the electronic device, a music genre based on the intensity of the rhythm diagram of the sound signal, music intensity in waveform diagram, and a frequency value in a spectrogram of the sound signal.
4. The method according to claim 1 , wherein the light emitting device in the step (C) stores a plurality of light animations corresponding to a plurality of music genres.