| 摘要 |
PURPOSE: To give a harmony only to a main melody among them when plural songs such as a duet, etc., are inputted in a karaoke device. CONSTITUTION: When two persons sing, whether or not the harmony is sung excepting the main melody is analyzed. A main melody selection part 23 decides the main melody from plural inputted basic frequencies. When the fact that the harmony is to be given is judged as the result of the analysis decision, a song analysis part 22 instructs the effect for a main melody component separation part 25, and the main melody selection part 23 instructs the frequencies of the main melody. The main melody component separation part 25 separates and extracts only the main melody component from plural inputted song voice signals to input it to a pitch shift part 26. The pitch shift part 26 pitch shifts the main melody component to an interval of e.g. three degree upper, and addition synthesizes with the inputted voice in an addition part 28 to output it to the outside. Thus, the voice signal giving the harmony only to the main melody is outputted. |
