(57) Abstract Objective At the same time purity sau which can obtain the effect of the sound which you hear and is goodndobotsukusuratsupa is offered. Constitution As for sound box bugle, sound bocksu saundobotsu of 40 and aforementioned sound box 40It constitutes from the bugle 20 which is provided inside face plate 10 before kusuThe section which is done, is inside the sound box of aforementioned bugle 20As for amount with the cover body 30 of the fiber material which has suitable thickness the packageIt is overturned. As for the sound which transmits bugle 20 facing toward the rearEvery other stopping/deciding and it is absorbed it is with aforementioned fiber material cover body 30The careless random resonance phenomenon which can be generated by the mutual interference of the me and sound it is lightThe decrease it does.
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