CN211063787U

CN211063787U - Dual-track testing and correcting device

Info

Publication number: CN211063787U
Application number: CN201922123307.1U
Authority: CN
Inventors: 郝庆凯; 王诠富
Original assignee: TIANHAN TECHNOLOGY (WUJIANG) CO LTD
Current assignee: TIANHAN TECHNOLOGY (WUJIANG) CO LTD
Priority date: 2019-12-02
Filing date: 2019-12-02
Publication date: 2020-07-21
Anticipated expiration: 2029-12-02

Abstract

The utility model discloses a test and correcting unit of binaural, including sound shielding case and the control terminal who has test system, be provided with sound source ware, test platform in the sound shielding case, the sound source ware sets up test platform's top, left channel and right channel are placed to the last test platform, the sound source ware left channel with right channel with control terminal electric connection. The test and correction device adopts the shielding box to enable the test result to be more accurate, avoids the interference of other factors, can detect the double sound channels, and corrects and compensates the unbalance of the left sound channel and the right sound channel in time.

Description

Dual-track testing and correcting device

Technical Field

The utility model relates to an electronic equipment field especially relates to a test and correcting unit of binaural.

Background

At present, more and more people like to record their lives by using lenses, and especially people want to record their journey and share their experiences when traveling or doing outdoor activities, even in water. The motion type DV is small and exquisite, light and convenient, and has high-standard effects of water resistance, dust resistance and the like, so the motion type DV is very suitable for outdoor shooting and video recording. However, the sports DV has good waterproof performance due to the special waterproof film, but also has a sound insulation effect, which affects the sound reception size of MIC and the sound reception of left and right dual channels is unbalanced. The unbalance of the two channels will eventually cause the difference of the recorded sound, the difference of the recorded audio frequency has small sound, too much noise, etc.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defect in the prior art, the embodiment of the utility model provides a test and correcting unit of binaural, including sound shielding case and the control terminal who has test system, be provided with sound source ware, test platform in the sound shielding case, the sound source ware sets up test platform's top, left channel and right channel are placed to test platform is last, the sound source ware left channel with right channel with control terminal electric connection.

Further, the sound source device adopts a standard sound source with the frequency of 1 KHz.

Furthermore, the sound shielding box adopts a pneumatic shielding box, the shell of the sound shielding box adopts an aluminum alloy material, and the interior of the sound shielding box adopts wave-absorbing foam, wave-absorbing glue and a grounded metal shielding net.

Furthermore, the sound shielding box adopts an extrusion type sealing design, and an upper cover and a lower cover compress a groove shielding mode.

Further, the control terminal comprises a detection unit, a processing unit and an execution unit, wherein the detection unit and the execution unit are respectively electrically connected with the left channel and the right channel, the processing unit is electrically connected with the detection unit and the execution unit, the detection unit is used for detecting the sound reception sizes of the left channel and the right channel, the processing unit judges whether the sound reception sizes of the left channel and the right channel reach a preset value and are consistent, a corresponding instruction signal is obtained according to a judgment result, and the execution unit receives the instruction signal and then performs correction compensation on the left channel and the right channel.

Further, the control terminal further includes a material storage unit, and the control terminal reads the obtained data into the material storage unit after performing correction compensation on the left channel and the right channel.

The utility model has the advantages as follows:

the special shielding box can ensure that the test is carried out under the condition of no interference of other external factors, so that the test result is more accurate; the sound source device adopts a standard sound source to ensure that sound signals received by the left channel and the right channel are the same.

The control terminal can detect whether the sound receiving sizes of the left and right channels are consistent or not, and can perform compensation correction on the left and right channels when the left and right channels are inconsistent so that the left and right channels are the same.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic diagram of a testing and calibrating apparatus according to an embodiment of the present invention.

Reference numerals of the above figures: a sound shielding box-1; a sound source device-2; a test platform-3; left channel-41; right channel-42; and (5) controlling the terminal.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature.

To achieve the above object, the present invention provides a dual-track testing and calibrating device, as shown in fig. 1. This test and correcting unit includes sound shielding case 1 and control terminal 5 that has test system, be provided with sound source ware 2, test platform 3 in the sound shielding case 1, sound source ware 2 sets up test platform 3's top, place left sound channel 41 and right sound channel 42 on test platform 3, sound source ware 2 left sound channel 41 with right sound channel 42 with control terminal 5 electric connection.

Further, the sound source device 2 adopts a standard sound source with the frequency of 1 KHz.

The sound shielding box 1 can ensure that the test is carried out under the condition of no interference of other external factors, so that the test result is more accurate. The use of standard sound sources by the sound source unit 2 also ensures that the sound signals received by the left channel 41 and the right channel 42 are identical. The influence of external objective factors on the test result is completely eradicated, the accuracy of the test result is improved, and the accuracy of the later correction compensation is ensured.

In the present embodiment, the preset value is set to 100 dB. Since the MIC to be tested adopts waterproof silica gel, the MIC to be tested has influence on the sound reception, and the sound reception is too small, so that the recording effect is not ideal. If the sounds of the left channel 41 and the right channel 42 are too small, the standard of the product is not met. The processing unit determines whether the left channel 41 and the right channel 42 are larger than a preset value, and determines whether the sound reception sizes of the left channel 41 and the right channel 42 are the same when the left channel 41 and the right channel 42 are both larger than the preset value.

In a normal situation, it should be detected that the output signals of the left channel 41 and the right channel 42 are the same, i.e. that the size and frequency of the recordings of the left channel 41 and the right channel 42 are the same. If the sizes of the received sounds of the left channel 41 and the right channel 42 are not consistent, the processing unit obtains the unbalanced side of the left channel 41 and the right channel 42, calculates the deviation value of the two sides of the left channel and the right channel, and sends a compensation instruction to the execution unit, after receiving the compensation instruction, the execution unit performs compensation correction on the unbalanced side to be compensated, and compensates the corresponding value of the unbalanced side to make the difference value of the two sides of the left channel and the right channel within a reasonable range, in this embodiment, the difference value of the left channel and the right channel does not exceed 2 dB.

After the compensation, it is necessary to detect whether the left channel 41 and the right channel 42 are balanced again until the compensation is corrected to the left-right channel balance.

Further, the control terminal 5 further includes a material storage unit, and the control terminal 5 reads the obtained data into the material storage unit after performing correction compensation on the left channel 41 and the right channel 42.

The present invention has been explained by using specific embodiments, and the explanation of the above embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.

Claims

1. The utility model provides a test and correcting unit of binaural, its characterized in that includes sound shielding case and the control terminal who has test system, be provided with sound source ware, test platform in the sound shielding case, the sound source ware sets up test platform's top, left channel and right channel are placed to test platform is last, the sound source ware left channel with right channel with control terminal electric connection.

2. The binaural testing and correction device according to claim 1, wherein said sound source unit employs a standard sound source with a frequency of 1 KHz.

3. The dual-channel testing and correcting device of claim 2, wherein the sound shielding box is a pneumatic shielding box, the shell of the sound shielding box is made of aluminum alloy material, and the sound shielding box is internally made of wave-absorbing foam, wave-absorbing glue and a grounded metal shielding net.

4. The binaural testing and correction device according to claim 3, wherein the sound shielding box is of a squeeze seal design, and the upper and lower covers are pressed against the groove for shielding.

5. The device according to claim 4, wherein the control terminal comprises a detection unit, a processing unit and an execution unit, the detection unit and the execution unit are electrically connected to the left channel and the right channel, respectively, the processing unit is electrically connected to the detection unit and the execution unit, the detection unit is configured to detect the sound reception sizes of the left channel and the right channel, the processing unit determines whether the sound reception sizes of the left channel and the right channel reach a predetermined value and are consistent with each other, a corresponding instruction signal is obtained according to a result of the determination, and the execution unit receives the instruction signal and then performs correction compensation on the left channel and/or the right channel.

6. The apparatus of claim 5, wherein the control terminal further comprises a data storage unit, and the control terminal reads the obtained data into the data storage unit after performing correction compensation on the left channel and the right channel.