| 摘要 |
A SPEAKER SYSTEM FOR USE IN A TELEVISION SET,PROVIDES FLAT FREQUENCY CHARACTERISTICS BY COUPLING AN ACOUSTIC PIPE (16) TO THE FRONT OF A SPEAKER (15).A REFLECTOR BOARD (18. FIG 1) IS PLACED IN THE INSIDE OF THE PIPE TO GUIDE THE SOUND FROM THE SPEAKER AND A PARTITION BOARD (30) IS INSERTED INTO THE PIPE FROM THE OBLONG OPENING (16a) OF THE PIPE, TO CONNECT TO THE REFLECTOR BOARD. THE PARTITION BOARD IS COUPLED TO THE SIDE OF THE OBLONG OPENING. A PORT (31) IS PROVIDED ON THE PARTITION BOARD. TWO PARTITION BOARDS (30,34) CAN BE PLACED EITHER SIDE OF THE ACOUSTIC PIPE, EACH WITH A PORT (31,35). SOUND ABSORBING MATERIAL (37,38
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