Loudness testing equipment of recorder

Abstract

The embodiment of the utility model provides loudness testing equipment of a recorder. Relates to the testing field. The loudness testing equipment of the recorder comprises a sound production device, a sound receiving device and processing equipment, the sound production device comprises an audio analyzer and an artificial mouth, and the audio analyzer is connected with the artificial mouth; the sound receiving device comprises a microphone and a sound card, the microphone is connected with the sound card, and the sound card is connected with the processing equipment; the audio analyzer is used for controlling the artificial mouth to play a first sound signal, the recorder is used for collecting and processing the first sound signal to obtain a second sound signal and playing the second sound signal, and the microphone is used for collecting and processing the second sound signal to obtain a third sound signal and sending the third sound signal to the processing equipment through the sound card; and the processing equipment is used for determining a loudness test result of the recorder according to the third sound signal. And the accuracy of the loudness test of the recorder is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of testing, in particular to a loudness test device for a recorder. BACKGROUND

[0002] When performing a task, law enforcement personnel usually uses a recorder to record sound or video on site, and can check the recorded sound or video after the task is completed. In order to ensure that the recorder can record and play clear and distinguishable sound, it is necessary to test the loudness of the recorder.

[0003] In related technologies, the loudness of the recorder is generally tested by using a sound pressure level measurement method. The tester needs to place a test device (for example, a sound level meter) close to the recorder, and test the sound played by the recorder to obtain the loudness result.

[0004] However, in the above process, there is an error between the sound played by the recorder and the sound received by the test device, which makes the test result deviate from the true loudness value, resulting in low accuracy of the loudness test. UTILITY MODEL CONTENT

[0005] The present application provides a loudness test device for a recorder to solve the problem of low accuracy of the loudness test of the recorder.

[0006] In a first aspect, the present application provides a loudness test device for a recorder, comprising: a sound generating device, a sound receiving device, and a processing device, wherein,

[0007] The sound generating device comprises an audio analyzer and an artificial mouth, and the audio analyzer and the artificial mouth are connected.

[0008] The sound receiving device comprises a microphone and a sound card, and the microphone and the sound card are connected, and the sound card is connected with the processing device.

[0009] The audio analyzer is used to control the artificial mouth to play a first sound signal, the recorder is used to collect and process the first sound signal to obtain a second sound signal and play the second sound signal, the microphone is used to collect and process the second sound signal to obtain a third sound signal, and the third sound signal is sent to the processing device through the sound card, and the processing device is used to determine the loudness test result of the recorder according to the third sound signal.

[0010] In a possible implementation, the device further comprises a power amplifier, wherein,

[0011] The input end of the power amplifier is connected with the output end of the audio analyzer.

[0012] An output terminal of the power amplifier is connected with an input terminal of the artificial mouth.

[0013] In a possible implementation, the device further comprises a power supply, wherein,

[0014] The power supply is connected with the audio analyzer, the sound card and the processing device respectively;

[0015] The power supply is configured to supply power to the audio analyzer, the sound card and the processing device.

[0016] In a possible implementation, the device further comprises a controller, wherein,

[0017] The controller is connected with the power supply, the audio analyzer, the sound card and the processing device respectively;

[0018] The controller is configured to control the power supply to supply power to the audio analyzer, the sound card and the processing device;

[0019] The controller is further configured to control the audio analyzer, the sound card and the processing device to work.

[0020] In a possible implementation, the device further comprises a noise sound device, wherein,

[0021] The power supply and the controller are connected with the noise sound device respectively.

[0022] In a possible implementation, a first memory is arranged in the noise sound device, wherein the first memory comprises a plurality of preset environmental noises.

[0023] The noise sound device is configured to play the plurality of preset environmental noises after receiving a first playing instruction.

[0024] In a possible implementation, a second memory is arranged in the audio analyzer, and the second memory comprises a plurality of preset sound signals.

[0025] The audio analyzer is configured to determine the first sound signal from the plurality of preset sound signals and send the first sound signal to the artificial mouth after receiving a second playing instruction.

[0026] In a possible implementation, the device further comprises a first container and a second container, wherein,

[0027] The audio analyzer, the artificial mouth and the noise sound device are arranged in the first container;

[0028] The sound card and the microphone are arranged in the second container.

[0029] In a possible implementation, the outer sidewall of the first container is provided with a first flexible ruler for measuring the distance between the first container and the recording instrument.

[0030] In a possible implementation, the outer sidewall of the second container is provided with a second flexible ruler for measuring the distance between the second container and the recording instrument.

[0031] The embodiment of the present application provides a loudness test device of a recording instrument, and the loudness test device of the recording instrument comprises a sound emitting device, a sound collecting device and a processing device, wherein the sound emitting device comprises an audio analyzer and an artificial mouth, the audio analyzer and the artificial mouth are connected; the sound collecting device comprises a microphone and a sound card, the microphone and the sound card are connected, and the sound card is connected with the processing device. When the loudness test of the recording instrument is needed, the audio analyzer plays a first sound signal through the artificial mouth, the recording instrument collects and plays a second sound signal, the microphone collects the second sound signal, and sends a third sound signal obtained through the sound card to the processing device, and then the processing device processes the third sound signal to obtain a loudness test result. In the above process, the sound emitting device can conveniently control the recording instrument to collect sound, and the sound collecting device and the processing device can conveniently test the playing condition of the recording instrument and accurately analyze the loudness of the sound played by the recording instrument, so that the accuracy of the loudness test of the recording instrument is improved. BRIEF DESCRIPTION OF DRAWINGS

[0032] The drawings incorporated in the specification and constituting a part thereof illustrate embodiments consistent with the present application and, together with the specification, serve to explain the principles of the application.

[0033] Figure 1 A structural schematic diagram of a loudness test device of a recording instrument provided by the embodiment of the present application;

[0034] Figure 2 A structural schematic diagram of another loudness test device of a recording instrument provided by the embodiment of the present application;

[0035] Figure 3 A structural schematic diagram of another loudness test device of a recording instrument provided by the embodiment of the present application;

[0036] Figure 4 A structural schematic diagram of another loudness test device of a recording instrument provided by the embodiment of the present application;

[0037] Figure 5 A structural schematic diagram of another loudness test device of a recording instrument provided by the embodiment of the present application.

[0038] Explanation of reference signs:

[0039] 10 - loudness test device;

[0040] 11 - sound production device;

[0041] 12 - sound receiving device;

[0042] 13 - processing device;

[0043] 14 - power supply;

[0044] 15 - controller;

[0045] 111 - audio analyzer;

[0046] 112 - artificial mouth;

[0047] 113 - power amplifier;

[0048] 114 - noise sound;

[0049] 115 - first container;

[0050] 116 - first flexible ruler;

[0051] 121 - microphone;

[0052] 122 - sound card;

[0053] 123 - second container;

[0054] 124 - second flexible ruler.

[0055] The specific embodiments of the application have been shown by way of example in the above figures, and will be described in more detail hereafter. These figures and the written description are not to be construed as limiting the scope of the concept of the application in any way, but are merely to illustrate specific embodiments of the application by way of example to those skilled in the art. DETAILED DESCRIPTION

[0056] The exemplary embodiments will be described in detail herein with reference to the attached drawings. The description of the exemplary embodiments is intended to apply to all alternative embodiments, as would be understood by one skilled in the art. The following exemplary embodiments are described herein with reference to the figures. In the description of the figures, like numbers represent the same or similar elements throughout. The following exemplary embodiments are described in terms of the best mode for practicing the application. Other embodiments can be practiced without the specific details (e.g., dimensions, materials, etc.) provided herein and it is contemplated that persons having ordinary skill in the art having the benefit of this disclosure can make modifications and variations to the embodiments without departing from the scope or spirit of the application.

[0057] It should be noted that in the embodiments of the present application, some software, components, models, etc. that are available in the industry can be mentioned, which should be considered as exemplary, and the purpose is only to illustrate the feasibility of the implementation of the technical solutions of the present application, but it does not mean that the applicant has or will necessarily use the scheme.

[0058] The test device shown in the present application will be described in detail through specific embodiments. It should be noted that the following embodiments can exist independently or be combined with each other. For the same or similar content, the description will not be repeated in different embodiments.

[0059] Figure 1 A structural schematic diagram of a loudness test device of a recorder provided by an embodiment of the present application is shown in FIG. 1. As shown in FIG. 1, the loudness test device 10 includes a sound emitting device 11, a sound receiving device 12, and a processing device 13. Figure 1 The sound emitting device 11 includes an audio analyzer 111 and an artificial mouth 112, and the audio analyzer 111 is connected to the artificial mouth 112. The sound receiving device 12 includes a microphone 121 and a sound card 122, and the microphone 121 is connected to the sound card 122. The sound card 122 is connected to the processing device 13. The audio analyzer 111 is configured to control the artificial mouth 112 to play a first sound signal. The recorder is configured to collect and process the first sound signal, obtain a second sound signal, and play the second sound signal. The microphone 121 is configured to collect and process the second sound signal, obtain a third sound signal, and send the third sound signal to the processing device 13 through the sound card 122. The processing device 13 is configured to determine a loudness test result of the recorder according to the third sound signal.

[0060] The recorder has the functions of recording and playing, and can be used to record videos or sounds, and play the recorded videos or sounds.

[0061] The audio analyzer 111 has the functions of storing and playing, and can be used to store and play multiple sound signals.

[0062] The audio analyzer 111 can be provided with a second memory, and multiple sound signals can be stored in the second memory. For example, the second memory of the audio analyzer 111 can store multiple sound signals with fixed time length and fixed loudness. The sound signals can include male voice, female voice, and mixed voice of male and female.

[0063] The audio analyzer 111 can determine a first sound signal from multiple preset sound signals after receiving a second playing instruction, and send the first sound signal to the artificial mouth 112.

[0064] The second playing instruction is used to instruct the audio analyzer 111 to select and send the first sound signal.

[0065] The staff can operate the audio analyzer 111 to make the audio analyzer receive the second playing instruction. For example, a playing button can be arranged on the audio analyzer 111, and after the staff clicks the playing button, the audio analyzer 111 obtains the second playing instruction; or a display screen is arranged on the audio analyzer 111, and the staff can input operations in the audio analyzer 111 through the display screen, so that the audio analyzer 111 receives the second playing instruction.

[0066] The output end of the audio analyzer 111 is connected with the input end of the artificial mouth 112, and the audio analyzer 111 can convert the sound signal and transmit the sound signal to the artificial mouth 112 through the output end of the audio analyzer 111.

[0067] The artificial mouth 112 has a simulated function and can be used to simulate the sound characteristics of the human mouth. The artificial mouth 112 can process the received sound signal and then play the sound signal through the output end. For example, assuming that the audio analyzer 111 sends the selected sound signal to the input end of the artificial mouth 112 through the output end, the artificial mouth 112 processes the received sound signal and then plays the sound signal through the output end.

[0068] The audio analyzer 111 and the artificial mouth 112 are located on one side of the recording instrument, and the artificial mouth 112 is at a certain distance from the recording instrument, so that the recording instrument can collect the sound signal played by the artificial mouth 112.

[0069] The microphone 121 has the function of collecting sound signals and can be used to collect the sound signal played by the recording instrument. For example, assuming that the recording instrument starts to play the sound signal, the microphone 121 can collect the sound signal at a suitable distance and convert and process the sound signal.

[0070] The input end of the sound card 122 is connected with the microphone 121, and the sound card 122 can receive the sound signal sent by the microphone 121 and convert and process the sound signal. For example, assuming that the microphone 121 sends the sound signal to the input end of the sound card 122, the sound card 122 converts and processes the sound signal and then sends the sound signal to the processing device 13 through the output end of the sound card 122.

[0071] The microphone 121 and the sound card 122 are located on the other side of the recording instrument, and the microphone 121 is at a certain distance from the recording instrument, so that the microphone 121 can receive the sound signal played by the recording instrument. Optionally, the microphone 121 can be aligned with the middle part of the recording instrument to receive the sound signal.

[0072] The processing device 13 has the functions of storing and processing sound signals, and can be used to store sound signals and analyze the loudness of the sound signals to obtain the loudness value.

[0073] The processing device 13 is connected with the sound card 122, can receive the sound signal sent by the sound card 122, and store the sound signal in the processing device 13 in the audio file format, and then perform the loudness analysis on the sound signal to obtain the loudness test result.

[0074] Next, the working flow of the loudness test device 10 of the recorder is described.

[0075] Before the loudness test of the recorder is needed, the recorder and the loudness test device can be properly placed, so that the artificial mouth 112 in the loudness test device 10 has a certain distance from the recorder, and the microphone 121 in the loudness test device 10 has a certain distance from the recorder. When the loudness test of the recorder is performed, the audio analyzer 111 can obtain the first sound signal and send the first sound signal to the artificial mouth 112. The artificial mouth 112 converts the received first sound signal and plays the first sound signal through the output end. The recorder can collect and process the first sound signal to obtain the second sound signal, and the loudness of the second sound signal is less than or equal to the loudness of the first sound signal.

[0076] The recorder can also play the obtained second sound signal. The microphone 121 collects and processes the second sound signal to obtain the third sound signal, and sends the third sound signal to the processing device 13 through the sound card 122. The processing device 13 performs the loudness analysis on the third sound signal to obtain the loudness test result. The loudness of the third sound signal is less than or equal to the loudness of the second sound signal.

[0077] Optionally, the processing device can determine the loudness value of the third sound signal. If the loudness value of the third sound signal is not within the preset loudness range, it indicates that the audio performance of the recorder is low, and it is determined that the loudness test result is failed. If the loudness value of the third sound signal is within the preset loudness range, it indicates that the audio performance of the recorder is high, and it is determined that the loudness test result is passed.

[0078] In Figure 1In the embodiment shown, the loudness test device 10 of the recorder comprises a sound emitting device 11, a sound receiving device 12 and a processing device 13, the sound emitting device 11 comprises an audio analyzer 111 and an artificial mouth 112, and the audio analyzer 111 is connected with the artificial mouth 112; the sound receiving device 12 comprises a microphone 121 and a sound card 122. The audio analyzer 111 has a storage and playing function; the artificial mouth 112 has a simulation function; the audio analyzer 111 controls the artificial mouth 112 to send a first sound signal to the recorder, so that the recorder collects the first sound signal; after the collection is completed, the recorder sends a second sound signal to the microphone 121, the microphone 121 collects the second sound signal and sends a third sound signal to the processing device 13 through the sound card 122, and the processing device 13 can be used to accurately analyze the loudness of the third sound signal, thereby improving the accuracy of the loudness test of the recorder.

[0079] On the basis of any one of the above embodiments, in the following, the structure of the loudness test device of the recorder will be further described. Figure 2 On the basis of any one of the above embodiments, in the following, the structure of the loudness test device of the recorder will be further described.

[0080] Figure 2 On the basis of any one of the above embodiments, in the following, the structure of the loudness test device of the recorder will be further described. Figure 1 On the basis of any one of the above embodiments, in the following, the structure of the loudness test device of the recorder will be further described. Figure 2 The loudness test device 10 further comprises a power amplifier 113. The input end of the power amplifier 113 is connected with the output end of the audio analyzer 111; and the output end of the power amplifier 113 is connected with the input end of the artificial mouth 112.

[0081] The power amplifier 113 has a function of amplifying signal power, can be used for power amplification processing of the sound signal, and further improves the loudness of the sound signal. The power amplifier 113 amplifies the sound signal sent by the audio analyzer 111 by adjusting the amplification multiple, and sends the amplified sound signal through the output end.

[0082] The input end of the power amplifier 113 is connected with the output end of the audio analyzer 111, and the output end is connected with the input end of the artificial mouth 112. The audio analyzer 111 sends the sound signal to the input end of the power amplifier 113 through the input end, the power amplifier 113 sends the sound signal after the amplification processing to the input end of the artificial mouth 112 through the output end, and the artificial mouth 112 plays the sound signal through the output end after receiving the sound signal.

[0083] On the basis of any one of the above embodiments, in the following, the structure of the loudness test device of the recorder will be further described. Figure 2In the embodiment shown, the loudness test device 10 of the recorder is provided with a power amplifier 113. The power amplifier 113 can perform power amplification processing on the sound signal, so that the artificial mouth 112 can receive a sound signal with greater power. In this way, the artificial mouth 112 can play a sound with higher loudness, thereby better testing the recorder and improving the accuracy of testing the recorder.

[0084] On the basis of any one of the above embodiments, the structure of the loudness test device of the recorder will be further described below in combination with Figure 3 , the structure of the loudness test device of the recorder will be further described below in combination with

[0085] Figure 3 Another structural schematic diagram of the loudness test device of the recorder provided by the embodiment of the present application is shown in Figure 2 On the basis of the embodiment shown, please refer to Figure 3 , the loudness test device 10 further comprises a power supply 14 and a controller 15. The power supply 14 is connected with the audio analyzer 111, the sound card 122 and the processing device 13 respectively. The power supply 14 is used to supply power to the audio analyzer 111, the sound card 122 and the processing device 13. The controller 15 is connected with the power supply 14, the audio analyzer 111, the sound card 122 and the processing device 13 respectively. The controller 15 is used to control the power supply 14 to supply power to the audio analyzer 111, the sound card 122 and the processing device 13. The controller 15 is further used to control the audio analyzer 111, the sound card 122 and the processing device 13 to work.

[0086] The power supply 14 has the function of supplying power, which can be used to supply power to the audio analyzer 111, the sound card 122 and the processing device 13 to ensure that each device can continuously and stably work.

[0087] The power supply 14 is connected with the controller 15, and the power supply 14 can be turned on or off through the controller 15. The power supply 14 is turned on to supply power to each device when the loudness test is needed.

[0088] The controller 15 has the function of controlling, which can be used to control the devices connected with the controller 15. The staff can operate the devices connected with the controller 15 by operating the controller 15.

[0089] The controller 15 can control the running state of the audio analyzer 111, the sound card 122 and the processing device 13 according to the preset external instruction. The running state can include a working state and a pause state. For example, if the external instruction received by the controller is a start instruction, the controller can control the audio analyzer 111, the sound card 122 or the processing device 13 to switch to the running state. If the external instruction received by the controller is a pause instruction, the controller can control the audio analyzer 111, the sound card 122 or the processing device 13 to switch to the pause state.

[0090] The controller 15 is connected with the power supply 14, the audio analyzer 111, the sound card 122 and the processing device 13 respectively. When the loudness test of the recorder is performed, the controller 15 controls the power supply 14 to supply power to the audio analyzer 111, the sound card 122 and the processing device 13, and controls the audio analyzer 111, the sound card 122 and the processing device 13 to start running, so as to complete the loudness test of the recorder; after the test is completed, the controller 15 controls the audio analyzer 111, the sound card 122 and the processing device 13 to stop running, and controls the power supply 14 to stop supplying power.

[0091] In Figure 3 In the embodiment shown, the loudness test device 10 of the recorder is provided with the power supply 14 and the controller 15. The power supply 14 can supply power to the audio analyzer 111, the sound card 122 and the processing device 13, so that the audio analyzer 111, the sound card 122 and the processing device 13 can continuously and stably run. The controller 15 can control the power supply 14 to supply power to the audio analyzer 111, the sound card 122 and the processing device 13. Only when the recorder needs to be tested, the controller 15 controls the audio analyzer 111, the sound card 122 and the processing device 13 to be powered on and run. The controller 15 can also control the audio analyzer 111, the sound card 122 and the processing device 13 to work, so that the audio analyzer 111, the sound card 122 and the processing device 13 can efficiently and orderly perform the loudness test of the recorder, and the convenience of the loudness test of the recorder is higher.

[0092] On the basis of any one of the above embodiments, in the following, the structure of the loudness test device of the recorder will be further described in combination with Figure 4 The structure of the loudness test device of the recorder will be further described.

[0093] Figure 4 Another structure diagram of the loudness test device of the recorder provided by the embodiment of the present application is shown in Figure 3 On the basis of the embodiment shown, please refer to Figure 4 The loudness test device 10 further comprises a noise sound box 114. The power supply 14 and the controller 15 are connected with the noise sound box 114 respectively.

[0094] The noise sound box 114 has the functions of storing and playing noise, and can play background noise in different environments.

[0095] The first memory can be arranged in the noise sound box 114, and a plurality of environmental noises can be stored in the first memory. For example, a plurality of environmental noises with different lengths and different loudnesses can be stored in the first memory of the noise sound box 114.

[0096] The noise sound box 114 plays a plurality of preset environmental noises after receiving a first playing instruction.

[0097] The first playing instruction is used to instruct the noise sound player 114 to select and play specific environmental noise.

[0098] The input end of the noise sound player 114 is connected with the power supply 14, and the power supply 14 can supply power to the noise sound player 114 to enable the noise sound player 114 to operate normally. In addition, the input end of the noise sound player 114 is connected with the controller 15, and the controller 15 can control the working state of the noise sound player 114 according to a preset external instruction.

[0099] The staff can operate the controller 15. After the power supply 14 completes power supply and it is confirmed that the test equipment can operate normally, the controller 15 sends the first playing instruction to the noise sound player 114. The noise sound player 114 selects and plays environmental noise in the first memory according to the first playing instruction. After it is confirmed that the noise sound player 114 starts to play environmental noise, the controller 15 sends the second playing instruction to the audio analyzer 111. The audio analyzer 111 selects and sends the first sound signal to the artificial mouth 112 according to the second playing instruction.

[0100] In Figure 4 In the embodiment shown in the figure, the loudness test equipment 10 of the recorder is provided with the noise sound player 114. The noise sound player 114 can play background noise in different scenes. In this way, the recorder can perform loudness test under different environmental noise, and the accuracy of the loudness test of the recorder is improved.

[0101] On the basis of any one of the above embodiments, in the following, the structure of the loudness test equipment of the recorder will be further described in combination with Figure 5 The structure of the loudness test equipment of the recorder will be further described in combination with

[0102] Figure 5 Another structure schematic diagram of the loudness test equipment of the recorder provided by the embodiment of the present application is shown in the figure, and on the basis of the embodiment shown in the figure, please refer to Figure 4 On the basis of the embodiment shown in the figure, please refer to Figure 5 The loudness test equipment 10 further includes a first container 115, a second container 123, a first flexible ruler 116 and a second flexible ruler 124. The audio analyzer 111, the power amplifier 113, the artificial mouth 112 and the noise sound player 114 are arranged in the first container 115. The sound card 122 and the microphone 121 are arranged in the second container 123. The outer side wall of the first container 115 is provided with the first flexible ruler 116, and the first flexible ruler 116 is used to measure the distance between the first container 115 and the recorder. The outer side wall of the second container 123 is provided with the second flexible ruler 124, and the second flexible ruler 124 is used to measure the distance between the second container 123 and the recorder.

[0103] The first container 115 has a containing function, and can be used to contain the audio analyzer 111, the power amplifier 113, the artificial mouth 112 and the noise sound 114. The sound signals sent by the noise sound 114 and the artificial mouth 112 can be played through the first container 115.

[0104] The second container 123 has a containing function, and can be used to contain the sound card 122 and the microphone 121. The microphone 121 can collect sound signals through the second container 123. The sound card 122 can send sound signals to the processing device 13 through the second container 123.

[0105] The first flexible ruler 116 is located on the outer side wall of the first container 115. The length of the first flexible ruler 116 can be set to 10 centimeters, so that the recorder can collect the sound signals emitted by the first container 115.

[0106] The first flexible ruler 116 is used to measure the distance between the first container 115 and the recorder. Before the loudness test of the recorder is needed, the staff can adjust the length of the first flexible ruler 116, and place the recorder according to the preset length of the first flexible ruler 116, so that the recorder can collect the sound signals played by the artificial mouth 112 at the appropriate distance.

[0107] The second flexible ruler 124 is located on the outer side wall of the second container 123. The length of the second flexible ruler 124 can be set to 10 centimeters, so that the microphone 121 can collect the sound signals played by the recorder.

[0108] The second flexible ruler 124 is used to measure the distance between the second container 123 and the recorder. After the placement position of the first container 116 and the recorder is determined, the staff can place the second container 115 according to the preset length of the second flexible ruler 124 and the position of the recorder, so that the microphone 121 can collect the sound signals played by the recorder at the appropriate distance.

[0109] Next, the working process of the recorder loudness test device 10 is described as follows:

[0110] Before the loudness test of the recorder is needed, the staff first adjusts the length of the first flexible ruler 116 and the second flexible ruler 124, and then places the recorder and the first container 115 according to the length of the first flexible ruler 116, and places the second container 123 according to the length of the second flexible ruler 124 and the position of the recorder.

[0111] When performing a loudness test on the recorder, the controller 15 controls the power supply 14 to power the audio analyzer 111 , the noise speaker 114 , the sound card 122 and the processing device 13 , and controls the audio analyzer 111 , the noise speaker 114 , the sound card 122 and the processing device 13 to start running.

[0112] After receiving the first play instruction sent by the controller 15, the noise speaker 114 plays multiple preset environmental noises through the output end. After receiving the second play instruction sent by the controller 15, the audio analyzer 111 sends the first sound signal to the input end of the artificial mouth 112 through the power amplifier 113. The output end of the artificial mouth 112 plays the first sound signal through the first container 115. The recorder collects and processes the first sound signal and the environmental noise, and plays the second sound signal to the second container 123. The microphone 121 collects and processes the second sound signal and sends the obtained third sound signal to the processing device 13 through the sound card 122. The processing device 13 performs loudness analysis on the third sound signal to obtain a loudness test result.

[0113] After completing the loudness test on the recorder, the controller 15 controls the audio analyzer 111 , the noise sounder 114 , the sound card 122 and the processing device 13 to stop running, and controls the power supply 14 to stop supplying power.

[0114] exist Figure 5 In the illustrated embodiment, the recorder loudness test device 10 is provided with a first container 115 to accommodate the relevant sound-generating device; a second container 123 to accommodate the relevant sound-receiving device; a first flexible ruler 116 to measure the distance between the first container 115 and the recorder, so that the recorder can accurately capture the sound signal played by the artificial mouth 112; and a second flexible ruler 124 to measure the distance between the second container 123 and the recorder, so that the microphone 121 can accurately capture the sound signal played by the recorder through the second container 123, thereby improving the accuracy of the recorder loudness test.

[0115] Obviously, those skilled in the art may make various changes and modifications to the embodiments of the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the embodiments of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations.

Claims

1. A loudness test device for a recorder, characterized in that: include: Sound generating device, sound receiving device and processing equipment, wherein, The sound-generating device includes an audio analyzer and an artificial mouth, wherein the audio analyzer is connected to the artificial mouth; The sound collecting device includes a microphone and a sound card, the microphone is connected to the sound card, and the sound card is connected to the processing device; The audio analyzer is used to control the artificial mouth to play a first sound signal; the recorder is used to collect and process the first sound signal to obtain a second sound signal and play the second sound signal; the microphone is used to collect and process the second sound signal to obtain a third sound signal, and send the third sound signal to the processing device through the sound card; the processing device is used to determine a loudness test result of the recorder based on the third sound signal.

2. The device according to claim 1, characterized in that The device also includes a power amplifier, wherein The input end of the power amplifier is connected to the output end of the audio analyzer; The output end of the power amplifier is connected to the input end of the artificial mouth.

3. The device according to claim 1, characterized in that The device also includes a power supply, wherein The power supply is connected to the audio analyzer, the sound card and the processing device respectively; The power supply is used to supply power to the audio analyzer, the sound card and the processing device.

4. The device according to claim 3, characterized in that The device further comprises a controller, wherein The controller is respectively connected to the power supply, the audio analyzer, the sound card and the processing device; The controller is used to control the power supply to supply power to the audio analyzer, the sound card and the processing device; The controller is also used to control the operation of the audio analyzer, the sound card and the processing device.

5. The device according to claim 4, characterized in that The device also includes a noise sounder, wherein, The power supply and the controller are respectively connected to the noise speaker.

6. The device according to claim 5, characterized in that The noise speaker is provided with a first memory, wherein the first memory includes a plurality of preset environmental noises; The noise sound is used to play the plurality of preset environmental noises after receiving a first play instruction.

7. The device according to any one of claims 1 to 6, characterized in that A second memory in the device of the audio analyzer, wherein the second memory includes a plurality of preset sound signals; The audio analyzer is configured to determine the first sound signal from the plurality of preset sound signals after receiving the second play instruction, and send the first sound signal to the artificial mouth.

8. The device according to claim 5 or 6, characterized in that The apparatus further comprises a first container and a second container, wherein The audio analyzer, the artificial mouth and the noise sounder are arranged in the first container; The sound card and the microphone are arranged in the second container.

9. The device according to claim 8, characterized in that A first flexible ruler is provided on the outer side wall of the first container, and the first flexible ruler is used to measure the distance between the first container and the recorder.

10. The device according to claim 8, characterized in that A second flexible ruler is provided on the outer side wall of the second container, and the second flexible ruler is used to measure the distance between the second container and the recorder.

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