Sound production device and system

A technology of sound-emitting device and sound-emitting structure, which is applied to frequency/directional characteristic devices, sensors, electrical components, etc., can solve the problem of difficult application of sound-emitting devices, and achieve the effect of reducing impact, reducing damage, and ensuring stability and accuracy.

Active Publication Date: 2021-12-07
LOW SPEED AERODYNAMIC INST OF CHINESE AERODYNAMIC RES & DEV CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to provide a sounding device and system, which solves the problem that the existing sounding device is difficult to apply in the wind tunnel test

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Such as figure 1 As shown, the first embodiment of the present invention provides a sounding apparatus 100, including: division unit 110, a treble sound structure 120, and a bass sound structure 130:

[0048] The division unit 110 connects the high tone sound structure 120 and the low tone sound symbol structure, the high tone sound structure 120 and the low tone sound structure 130 to each other, the treble sound structure 120 is a ring high-wave speaker, the bass The sound radiating end of the vocal structure 130 is provided to the ring high-tube.

[0049] The division unit 110 can distinguish the sound signal of the different frequency bands, which are enlarged, and then sent to the sound structure of the respective frequency band and reproduce, suitable for high quality sound, effectively improve the sound quality of the sounding device.

[0050] By setting the treble sound structure 120 and the bass sound structure 130, the sounding device 100 enables the output of the...

Embodiment 2

[0074] Such as Figure 7 , Figure 8 As shown, the present invention provides a wind tunneling system including: a connection device 200, a control device 300, and a sound device 100:

[0075] The connecting device 200 is connected to the sounding device 100, which is configured to control the sound intensity of the havan device 100.

[0076] The control device 300 can be placed outside the flow field, convenient for the user to operate; when the test, the sounding device 100 is fixed in the flow field through the connecting device 200.

[0077] The wind tunneling device is formed by the sound tuning device and the connecting device to obtain a test device that can be applied to the short-tank sound of the engine in the sound tunnel, avoiding the high cost of real flight, high test difficulty, difficult to implement, It has the advantage of low experimentation cost, simple and easy, and reliable and easy to test.

[0078] Typically, the maximum sound intensity of the sounding device...

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Abstract

The invention is suitable for the technical field of wind tunnel tests, and provides a sound production device and system.The sound production device comprises a frequency division part, a high-pitch sound production structure and a low-pitch sound production structure, the frequency division part is connected with the high-pitch sound production structure and the low-pitch sound production structure, and the high-pitch sound production structure and the low-pitch sound production structure are connected with each other; the high-pitch sound production structure is an annular high-pitch loudspeaker, and the sound radiation end of the low-pitch sound production structure is arranged back to the annular high-pitch loudspeaker. The sound production device and system provided by the invention improve the use efficiency of the sound source, can be suitable for broadband sound production, and are more suitable for sound production in a wind tunnel flow field.

Description

Technical field [0001] The present invention belongs to the field of wind tunnel test, in particular, to a sounding device and system. Background technique [0002] As air transport traffic increases sharply, the aircraft's noise pollution is getting more serious, which not only seriously affects the daily life and physical health of residents near the airport, but also reduces the comfort and satisfaction of the cabin passengers. The increasingly aggravated aircraft noise pollution further caused people's attention and attention, and it is urgent to reduce the noise of the aircraft's noise and the inside of the cabin. Therefore, the technological study of the aircraft noise reduction is more urgent. [0003] For large commercial aircraft in the prior art, engine short chambers are an important factor that leads to aircraft noise, and prior art is very small in the wind tunnel to study engine staples on the surface, cabin or body around the body. The noise effect. The test of the...

Claims

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Application Information

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IPC IPC(8): H04R1/26H04R1/28H04R1/40
CPCH04R1/26H04R1/2811H04R1/403
Inventor 李文建黄奔吴松岭杨玫
Owner LOW SPEED AERODYNAMIC INST OF CHINESE AERODYNAMIC RES & DEV CENT
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