METHOD AND APPARATUS FOR PRODUCING SITUATIONAL ACOUSTO-OPTIC EFFECT

摘要

A method and an apparatus for producing situational acousto-optic effect are provided. In the method, a sound signal is detected and a fast Fourier transform (FFT) and a normalization calculation are performed on the sound signal to produce a frequency domain signal. Then, a plurality of frequencies having variations between the frequency domain signals produced before and after a time point are determined whether to fit in with a frequency spectrum of a specific tone. Once the frequencies fit in with the frequency spectrum, a light source is controlled to produce light with a color corresponding to the specific tone.

主权项

1. A method for producing situational acousto-optic effect, adapted to an electronic apparatus, comprising:
detecting a sound signal; performing a fast Fourier transform and a normalization calculation on the sound signal to produce a frequency domain signal; determining whether a plurality of frequencies having variations between the frequency domain signals produced before and after a time point fit in with a frequency spectrum of a specific tone; and controlling a light source to produce light with a color corresponding to the specific tone once the frequencies fit in with the frequency spectrum of the specific tone.