JPS6318235Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a microphone holder particularly suitable for small stereo tape recorders.

Recently, many small stereo tape recorders have appeared that are capable of recording or playing back even while walking. Since the cabinet of such a stereo tape recorder is small, it is not possible to install the left and right microphones with a sufficient distance between them, and sometimes the left and right microphones are installed at the same location.

As mentioned above, in such a small tape recorder, since the distance between the left and right microphones is narrow, a mixture of sounds from the left and right sound sources is added to the microphones, making it impossible to perform sufficiently separated stereo recording.

Therefore, the present invention provides a microphone holder that enables stereo recording with a sufficient stereo effect by providing a sound insulating wall on the holder for attaching the microphone to a cabinet.The present invention will be explained below with reference to the drawings.

Reference numeral 1 denotes a holder in which a pair of left and right cylindrical holding chambers 2 and 3 are integrally molded by die-casting. are formed by opposing each other. A pair of sound insulating walls 6, 6 for insulating left and right sounds are formed near each of the sound collecting holes 4, 4 of the holder 1 , and a mounting portion 8 having a mounting hole 7 on the side is formed, respectively. Microphones 9 and 10 are held in the holding chambers 2 and 3, and 11 is a bracket for holding the holder 1 , which has a mounting piece 12 projecting downward. A pair of mounting members 13, 13 made of an elastic material are mounted on the bracket 11 at a predetermined distance, and are provided with square holes 14, 14 into which the sound insulating walls 6, 6 are fitted. 15 is a fixing member made of an elastic material like the pair of attachment members 13, 13, and has a fixing part 1 having a hole.
6 and a fitting portion 17 having a protrusion. 1
Reference numeral 8 denotes a tape recorder cabinet to which the microphones 9 and 10 are attached, and a mounting portion 19 to which the bracket 11 is attached is formed at one upper corner.

The microphone holder of the present invention is constructed as described above. Microphones 9 and 10 are held in holding chambers 2 and 3 of the holder 1 , and the holder 1 itself is also fixed to a bracket 11 attached to a cabinet 18. That is, the mounting piece 12 of the bracket 11 is fitted into the mounting hole 20 of the cabinet 18, and the bracket 11 is mounted to the mounting portion 19 of the cabinet 18. Next, the screw 21 is inserted into the fixing portion 16 of the fixing member 15, and the anterior muscle fixing member 15 is screwed onto the bracket 11. After that, the mounting members 13, 13 are bent outward, and the sound insulation walls 6, 6 of the holder 1 are attached to the mounting members 13, 13.
13, and the mounting hole 7 of the mounting portion 8 is fitted into the fitting portion 17 of the fixing member 15, thereby elastically fixing the holder 1 to the bracket 11. Finally, the microphones 9 and 10 are inserted into the left and right holding chambers 2 and 3 in the direction of the arrows with their left and right orientations reversed and fixed, thereby allowing the microphones 2 and 3 to be attached to the cabinet 18.

When recording using a stereo tape recorder equipped with the microphones 9 and 10, the microphones 9 and 10 are oriented at right angles to the sound source. Then, the sounds generated from the left and right sound sources are added to the left and right microphones 9 and 10, respectively, but the left and right sounds leak, especially if the left and right microphones 9 and 10 are installed close to each other, and The sound generated from the right sound source is added to the microphone 10, and the sound generated from the left sound source is added to the right microphone 10. However, in the present invention, since the holder 1 is provided with sound insulating walls 6, 6, the leaked sound is considerably reduced.

Figure 2 shows the data obtained from an experiment using the holder of the present invention, with the level plotted on the vertical axis and the frequency plotted on the horizontal axis. Curve 1 shows the sound pressure level from the right (left) sound source applied to the right (left) microphone 10, and curve 2 shows the sound pressure level applied to the right (left) microphone 10 when the sound insulation walls 6, 6 are provided. This shows the sound pressure level from the left (right) sound source, which is compared to the sound pressure level from the left (right) sound source that would leak into the right (left) microphone 10 if there were no sound insulation walls 6, 6. This clearly shows that the current level has been lowered to a sufficiently low level and has been further improved.

As mentioned above, the microphone holder of the present invention has a sound insulating wall near the sound collection hole on the front of the holder used to attach the microphone to the cabinet, so even if the left and right microphones are installed close together, You can record with a stereo feel.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the microphone holder of the present invention together with a bracket, etc., and FIG. 2 is a recording characteristic curve diagram of the microphone using the present invention. 1 ...Holder, 2,3...Holding chamber, 4,4...
... Sound collection hole, 5, 5 ... Opening, 6, 6 ... Sound insulation wall,
9, 10... Microphone, 11... Bracket, 13, 13... Mounting member, 14, 14... Mounting hole, 18... Cabinet.

Claims (1)

[Scope of utility model registration request] A microphone holder comprising: a pair of holding chambers consisting of a front surface having a sound collection hole and an open rear surface; the front and rear surfaces of the holding chambers being opposite to each other; and a sound insulating wall provided in the vicinity of the sound collection hole of each holding chamber. .