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JPS5514827

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DESCRIPTION JPS5514827
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic perspective view of the present
invention-embodiment, and FIG. 2 is a similar view of another embodiment. 1 ииииииии Super
directional microphone, 2 иии и и и Drive mechanism, 3 и и и и и и и и и и и и и и и и и и и и и и и и Analysis , 6 и и и и и и
и и и и display unit.
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sound source
locator. To prepare for the device's percentage noise 1. It is necessary to know the noise
generation site with a certainty of 11 V. However, in the conventional sound level meter, the
directivity of the microphone is weak, and there is not much difference in the measurement
output between when the microphone is facing the noise generation site and when it does not.
Because it is not, it was difficult to know the noise generation site by the positive 1-, F, 11112 ?
? 7:. / U ? M + + ? ? ? ? ? ?? ? ? ? ? $ $ $ $ $ $ ? ? ? ? ?? ?? ?? ?? ?
? ?? ?? ?? ?? ?? ?? ?? ?? ??The details of the present invention will be
described. In FIG. 1, the superdirective microphone (1) is: The tip (и? Of the arm (3) attached to
the drive mechanism (2) at its proximal end The output of the C-mounted superdirective
microphone (1) is amplified by an amplifier (4) and input to an analyzer (5). The analyzer (5)
outputs the effective value or the peak value as a DC signal, and the output is displayed by the
display (6). In the sound source probe according to the invention of the above configuration, the
drive mechanism (2) The arm (3) is driven, but at this time the microphone / microphone (1)
moves on a spherical surface (7) whose radius is the sum of the length of the arm (3) and the
axial length of the microphone (1). The driving mechanism stops the microphone (1) at
predetermined intervals on the spherical surface (7) and moves the parallel return path (8). In
other words, it makes the inside of the spherical surface (7) scan within the same J J-stop. Then,
the Tokyo night sound of the up stop is sampled on the My 2-d crophone (1), and the effective
value or the peel is displayed on the display unit. In this way, the distribution of the acoustic
energy from the sound source (S) in the spherical surface (7) can be known, and from that, the
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generation site of the breaking noise can be known in the sound wave (S). That is, the noise
generation site can be accurately determined by the position meter and the direction of the
microphone when the indication of the effective value or peak in the display unit (6) becomes
maximum. It should be noted that the sound source search device of the present invention
configured as described above ((In the case where a band filter circuit of hot octave or% octave is
attached to the analyzer (5), 0. It is possible to output not only the A (overall) value but also the
sound pressure level in the desired band. Still, it is possible to record the position of the
superdirective microphone (1), the sound pressure level at that position, etc. (it is also possible to
make a record such as gray scale display, contour line display, etc.). The present invention is not
limited to the above embodiments.
For example, the scanning 6 in the spherical surface (7) by the superdirective microphone (1)
may be performed by tracing the spiral path shown in (21) at 21st. As is apparent from the
above, according to the probe of the present invention, it is possible to accurately know the noise
generation site of the device, which is extremely useful for noise control. The arm of t1 probe, the
drive range is not so large when the measurement target is small, so it does not require a large
space for installation and use, ?
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