发明授权
US4481852A Sound generating circuit for timepiece 失效
钟表发声电路

Sound generating circuit for timepiece
摘要:
A sound generating circuit for a timepiece including a sound base signal generator, a program divider, a dividing ratio selecting counter a sound interval base signal generator and a sound producer, whereby the sounding action of frequencies which repeatedly changes at the sound intervals and cycles is performed and can produce the onomatopoetic sounds of bird chirp, insect churr and the like which feels soft and soothing for the users.
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