| 摘要 |
PURPOSE:To make it possible to generate complex tones by providing plural sound generating devices for electronic watches. CONSTITUTION:A watch provides plural piezo-electric elements 23-25 which have different resonance frequencies. Complex tones are easily produced as an alarm tone by combining the elements 23 through 25 and an electromagnetic buzzer or a speaker, etc. The same holds true by combining plural electromagnetic buzzers and speakers. |
