CN219659918U - Audio testing device and audio testing equipment - Google Patents

Abstract

The utility model relates to an audio test device and an audio test equipment, which are used for outputting an input audio test signal to equipment to be tested through a target transmission channel by a channel selection module configured with a plurality of signal transmission channels; the control module is respectively connected with the channel selection module and the equipment to be tested, controls the channel selection module to select the target transmission channel according to the audio test requirement, and receives an audio signal output by the equipment to be tested after processing the audio test signal so as to obtain an audio test characteristic value according to the audio signal, wherein the audio test characteristic value is used for representing that the audio signal output by the equipment to be tested accords with a preset audio test standard; the efficiency of the multichannel audio test to equipment to be tested is improved, the audio function of the equipment to be tested is effectively guaranteed to meet the normal requirement, and then the equipment use experience is improved.

Description

Audio testing device and audio testing equipment

Technical Field

The present utility model relates to the field of device function testing, and in particular, to an audio testing apparatus and an audio testing device.

Background

Along with development of scientific technology, the types of contacted devices in daily work and life are more and more abundant, and in order to ensure that functions of different types of devices meet normal use requirements, the device function test is very important. The audio test is an indispensable test in the function test of the equipment, and greatly influences the use experience of the equipment.

The existing audio test method is that audio signals with specific frequency and alternating current effective value are output to equipment to be tested through a data acquisition card; and analyzing the audio signal output by the equipment to be tested, judging whether the analysis result meets the test standard on the test tool, if so, passing the audio test of the equipment to be tested, otherwise, failing. However, the method has few audio output channels, so that the efficiency of multi-channel audio testing of the device to be tested is greatly limited.

Disclosure of Invention

Accordingly, it is necessary to provide an audio test device and an audio test apparatus for solving the above-mentioned problems.

An audio testing apparatus comprising:

the channel selection module is configured with a plurality of signal transmission channels and is used for outputting an input audio test signal to the equipment to be tested through the target transmission channel;

the control module is used for being respectively connected with the channel selection module and the equipment to be tested, controlling the channel selection module to select the target transmission channel according to the audio test requirement, and receiving the audio signal which is output by the equipment to be tested after the audio test signal is processed, so as to obtain an audio test characteristic value according to the audio signal, wherein the audio test characteristic value is used for representing that the audio signal output by the equipment to be tested accords with a preset audio test standard.

In one embodiment, the channel selection module is configured with an input port, a plurality of output ports and a controlled port, wherein the input port is used for inputting the audio test signal, the output port is connected with the device to be tested, and the controlled port is connected with the control end of the control module;

the channel selection module is used for receiving the channel selection instruction output by the control module, conducting a signal transmission channel between the input port and the output port of the target according to the channel selection instruction to serve as the target transmission channel, and inputting the audio test signal to the equipment to be tested through the target transmission channel.

In one embodiment, the controlled ports include a controlled enable port and a controlled select port, and the channel selection instruction includes an enable control signal and a channel selection signal, wherein the channel selection module starts a channel selection mode according to the received enable control signal, and determines an output port of the target according to the channel selection signal in the channel selection mode.

In one embodiment, the control module is further configured to output an audio test signal according to the audio test requirement; the audio test apparatus further includes:

the input end of the buffer module is connected with the output end of the control module, the output end of the buffer module is connected with the input port, and the buffer module is used for carrying out amplitude adjustment processing on the audio test signal output by the control module so that the amplitude of the audio test signal is in a preset amplitude range.

In one embodiment, the buffer module includes:

the voltage dividing unit is connected with the output end of the control module and is used for dividing the audio test signal output by the control module so as to adjust the voltage distribution of the audio test signal;

and the buffer unit is respectively connected with the voltage division unit and the input port and is used for buffering the audio test signal subjected to the voltage division processing so as to enable the amplitude of the audio test signal to be in a preset amplitude range.

In one embodiment, the voltage dividing unit includes:

the first resistor, the second resistor and the third resistor; the first end of the first resistor is connected with the first end of the third resistor, the second end of the first resistor is connected with the first end of the second resistor, and the second end of the second resistor is grounded;

the buffer unit includes:

an amplifier, a fourth resistor, a fifth resistor, and a sixth resistor; the first end of the amplifier is connected with the second end of the first resistor and the first end of the second resistor respectively, the second end of the amplifier is connected with the first end of the sixth resistor, the third end of the amplifier is connected with the first end of the fourth resistor and the first end of the fifth resistor respectively, the second end of the fourth resistor is connected with one end of a power supply, the fourth end of the amplifier is connected with the second end of the fifth resistor and grounded, the fifth end of the amplifier is connected with the first end of the sixth resistor, and the sixth end of the amplifier is connected with the other end of the power supply.

In one embodiment, the method further comprises:

the input end of the filtering module is connected with the buffer module, the output end of the filtering module is connected with the input port, and the filtering module is used for filtering the audio test signal after amplitude adjustment.

In one embodiment, the control module is further configured to output an audio test signal according to the audio test requirement; the control module includes:

the instruction acquisition unit is used for acquiring an audio test instruction input by a user;

the signal output unit is used for being respectively connected with the equipment to be tested and the instruction acquisition unit, and controlling the audio test signal to be output to the equipment to be tested according to the audio test instruction;

the signal analysis unit is used for being connected with the output end of the equipment to be tested, receiving the audio signal output by the equipment to be tested after the audio test signal is processed, and acquiring an audio test characteristic value according to the audio signal so as to analyze whether the audio signal output by the equipment to be tested accords with a preset audio test standard.

In one embodiment, the control module is further configured to generate a prompt instruction according to the audio test feature value; the audio test apparatus further includes:

and the prompt module is connected with the control module and used for generating an acousto-optic prompt signal according to the prompt instruction so as to enable a tester to acquire an audio test result of the equipment to be tested.

An audio test apparatus comprising:

such as the audio test apparatus described above.

According to the audio test device and the audio test equipment, the input audio test signals are output to the equipment to be tested through the target transmission channel by the channel selection module which is configured with the plurality of signal transmission channels; the control module is respectively connected with the channel selection module and the equipment to be tested, controls the channel selection module to select the target transmission channel according to the audio test requirement, and receives an audio signal output by the equipment to be tested after processing the audio test signal so as to obtain an audio test characteristic value according to the audio signal, wherein the audio test characteristic value is used for representing that the audio signal output by the equipment to be tested accords with a preset audio test standard; the efficiency of the multichannel audio test to equipment to be tested is improved, the audio function of the equipment to be tested is effectively guaranteed to meet the normal requirement, and then the equipment use experience is improved.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of an audio test system according to an embodiment;

FIG. 2 is a block diagram schematically illustrating the structure of an audio test apparatus according to an embodiment;

FIG. 3 is a schematic diagram of a specific structure of a channel selection module according to an embodiment;

FIG. 4 is a schematic block diagram showing a specific structure of a buffer module in one embodiment;

FIG. 5 is a schematic diagram showing a specific structure of an audio test apparatus according to an embodiment;

FIG. 6 is a schematic block diagram of a specific architecture of a control module in one embodiment.

Detailed Description

In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. Embodiments of the utility model are illustrated in the accompanying drawings. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

It will be understood that the terms first, second, etc. as used herein may be used to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another element.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or be connected to the other element through intervening elements. Further, "connection" in the following embodiments should be understood as "electrical connection", "communication connection", and the like if there is transmission of electrical signals or data between objects to be connected.

As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," and/or the like, specify the presence of stated features, integers, steps, operations, elements, components, or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or groups thereof.

Referring to fig. 1, a schematic structural diagram of an audio test system in one embodiment is shown.

In this embodiment, the audio test system includes an audio test device 100 and a device under test 200, as shown in fig. 1, where the audio test device 100 is connected to the device under test 200.

In the audio test process, the audio test device 100 inputs an audio test signal to the device under test 200 according to an audio test requirement input by a user, the device under test 200 internally processes the audio test signal and outputs the internally processed audio signal to the audio test device 100, the audio test device 100 analyzes the audio signal to obtain an audio test feature value, and determines whether the audio signal output by the device under test 200 meets a preset audio test standard according to the audio test feature value.

Referring to fig. 2, a block diagram is schematically shown of an audio test apparatus in one embodiment.

In this embodiment, as shown in fig. 2, the audio test apparatus includes a channel selection module 120 and a control module 140.

The channel selection module 120 is configured with a plurality of signal transmission channels for outputting the input audio test signal to the device under test via the target transmission channel.

Alternatively, the channel selection module 120 may be a selector configured with a plurality of signal transmission channels, and selects a target transmission channel of the plurality of signal transmission channels, and outputs an audio test signal to a device under test via the target transmission channel.

Alternatively, the target transmission channel may be a signal transmission channel used for transmitting the audio test signal in the channel selection module 120 in the current test period; in the case where the audio test signal is output to the device under test via the target transmission channel, the audio test signal may be output to the device under test via any one of the plurality of signal transmission channels.

The control module 140 is configured to be connected to the channel selection module 120 and the device under test, and is configured to control the channel selection module 120 to select the target transmission channel according to an audio test requirement, and receive an audio signal output by the device under test after processing the audio test signal, so as to obtain an audio test feature value according to the audio signal, where the audio test feature value is used to characterize that the audio signal output by the device under test meets a preset audio test standard.

Optionally, the control module 140 may be a controller that selects the target transmission channel according to an audio test requirement input by a user, receives an audio signal obtained by processing the audio test signal by the device under test, and obtains an audio test feature value according to the audio signal, and specifically, the controller may be an MCU (Microcontroller Unit, micro control unit).

Optionally, the device under test may be an electronic device with an audio function; the device to be tested comprises a MIC (Microphone) interface and a SPEAK (loudspeaker) interface; the process of the device to be tested for processing the audio test signal may be that the device to be tested passes through a MIC interface and a peak interface channel through a corresponding protocol instruction, and the audio test signal input to the device to be tested is amplified and then output through the peak interface; the amplification processing may be performed by a PA (Power amplifier).

Optionally, the method for obtaining the audio test feature value may be that an ADC (Analog to Digital Converter, analog-to-digital converter) port of the controller receives an audio signal output via the peak interface of the device under test, and analyzes the audio signal to obtain the audio signal; the method for analyzing the audio signal may be that the controller collects N points on the audio signal according to a preset sampling frequency, and calculates an audio test characteristic value based on voltage values of the N points and a fast fourier transform, so as to ensure accuracy of a sampling process, wherein a value range of N is not less than 64.

Optionally, the audio test feature value includes an RMS (Root Mean Square) value of the audio signal, a THD (Total Harmonic Distortion ) value of the audio signal; the audio signal meets a preset audio test standard, which may be that an RMS (Root Mean Square) value of the audio signal and a THD (Total Harmonic Distortion ) value of the audio signal are all in a preset range.

Specifically, in the multi-path audio test process, the control module 140 controls the channel selection module 120 to select one of the plurality of signal transmission channels according to an audio test requirement, and outputs the audio test signal to the device to be tested, the device to be tested passes through a MIC interface and a peak interface channel through a corresponding protocol instruction, amplifies the audio test signal input to the device to be tested, and then outputs the audio signal to the control module 140 through the peak interface, the control module 140 analyzes the audio signal to obtain an RMS value of the audio signal and a THD value of the audio signal, and if the RMS value of the audio signal and the THD value of the audio signal are both in a preset range, the audio signal output by the device to be tested accords with a preset audio test standard; under the condition of meeting multi-channel audio loop test, the efficiency of multi-channel audio test on equipment to be tested is improved, the audio function of the equipment to be tested is effectively ensured to meet the normal requirement, and then the equipment use experience is improved.

In one embodiment, the channel selection module is configured with an input port, a plurality of output ports and a controlled port, wherein the input port is used for inputting the audio test signal, the output port is connected with the device under test, the output port is used for outputting the audio test signal to the device under test, and the controlled port is connected with a control end of the control module; the channel selection module receives the channel selection instruction output by the control module through the controlled port, and conducts a signal transmission channel between the input port and the output port of the target to serve as the target transmission channel according to the channel selection instruction, and inputs the audio test signal to the device to be tested through the target transmission channel.

Wherein the controlled ports comprise controlled enabling ports and controlled selecting ports, and the channel selecting instruction comprises enabling control signals and channel selecting signals; the channel selection module starts a channel selection mode according to the received enabling control signal, and determines an output port of the target according to the channel selection signal in the channel selection mode.

Alternatively, the channel selection module may be a switch chip, and in particular, the switch chip may be a 3-way one-eighth analog switch circuit with a common enable input control bit.

Optionally, the controlled enabling port may be a port for receiving the enabling control signal sent by the control module, and in particular, the controlled enabling port may be an enabling pin of a switch chip; the enable control signal may be an enable signal for the channel selection module to start a channel selection mode; the channel selection mode may be a working mode in which the channel selection module selects the target transmission channel from a plurality of signal transmission channels.

Optionally, the controlled selection port may be a port for receiving the channel selection signal sent by the control module, and in particular, the controlled selection port may be a channel selection pin of a switch chip; the channel selection signal can be a signal which is output by the control module according to the audio test requirement and used for controlling the channel selection module to select the target transmission channel from a plurality of signal transmission channels; the method for conducting the signal transmission channel between the input port and the output port of the target may be to control the active level on the channel selection pin according to the channel selection signal.

Alternatively, the output end of the target may be a signal output port for outputting an audio test signal from the plurality of output ports in the current test period.

Alternatively, in the case that the audio test signal is output to the device under test via the target transmission channel, the audio test signal may be controlled to be output to the device under test via one of the plurality of signal output ports according to the channel selection instruction.

Specifically, in the process of multi-channel audio testing, the channel selection module starts a channel selection mode according to the received enabling control signal, and determines an output port of the target according to the channel selection signal in the channel selection mode so as to conduct a signal transmission channel between the input port and the output port of the target to serve as the target transmission channel; the efficiency of the multichannel audio test to equipment to be tested is improved, the audio function of the equipment to be tested is effectively guaranteed to meet the normal requirement, and then the equipment use experience is improved.

In one embodiment, as shown in fig. 3, the enable pin of the channel selection module U300 includes det_en, and the channel selection pin of the channel selection module U300 includes three pins, where the three pins include io_seta, io_setb, and io_setc; it should be noted that, according to the different signal transmission channels of the audio test requirement, the channel selection pins may be correspondingly set.

Specifically, when the enable pin det_en is at a high level and the channel select pins io_seta, io_setb, io_setc are all at a low level in the multi-channel audio test process, the signal transmission path DAC0_0 between the first controlled terminal and the target controlled terminal of the plurality of second controlled terminals is turned on, and the audio test signal is output from the signal transmission path DAC0_0 to the device to be tested; similarly, the remaining signal transmission paths dac0_1, … and dac0_7 between the first controlled terminal and the target controlled terminal in the plurality of second controlled terminals can be conducted only by controlling the action levels of the channel selection pins io_seta, io_setb and io_setc according to the channel selection instruction; the efficiency of the multichannel audio test to equipment to be tested is improved, the audio function of the equipment to be tested is effectively guaranteed to meet the normal requirement, and then the equipment use experience is improved.

In one embodiment, the control module is further configured to output an audio test signal according to the audio test requirement; the audio test device further comprises a buffer module, wherein the input end of the buffer module is connected with the output end of the control module, the output end of the buffer module is connected with the input port, and the buffer module is used for carrying out amplitude adjustment processing on the audio test signal output by the control module so that the amplitude of the audio test signal is in a preset amplitude range.

Optionally, the buffer module may be a buffer circuit for performing amplitude adjustment processing on the audio test signal output by the control module; the output end of the control module can be a DAC (Digital to Analog Converter, digital-to-analog converter) port of the controller; in particular, the BUFFER module may be a BUFFER circuit comprising an operational amplifier; the audio test signal output by the control module may be subjected to amplitude adjustment, so as to output a test signal in the form of a standard sine wave.

Referring to fig. 4, a block diagram is shown schematically, illustrating a specific structure of a buffer module in one embodiment.

In this embodiment, as shown in fig. 4, the buffer module 160 includes a voltage dividing unit 1620 and a buffer unit 1640.

The voltage dividing unit 1620 is connected to the output end of the control module, and is configured to perform voltage division processing on the audio test signal output by the control module, so as to adjust voltage distribution of the audio test signal.

Alternatively, the voltage dividing unit 1620 may be a voltage dividing circuit formed by dividing voltages by a plurality of resistors; specifically, as shown in fig. 5, the voltage dividing unit 1620 includes a first resistor R1, a second resistor R2, and a third resistor R3; the first end of the first resistor R1 is connected with the first end of the third resistor R3, the second end of the first resistor R1 is connected with the first end of the second resistor R2, and the second end of the second resistor R2 is grounded.

The buffer unit 1640 is respectively connected with the voltage dividing unit 1620 and the input port, and is used for buffering the audio test signal after the voltage dividing process, so that the amplitude of the audio test signal is in a preset amplitude range, the loss of the audio test signal after the voltage dividing process can be reduced, and the audio test signal is more stable.

Alternatively, the buffer unit 1640 may be a buffer having an amplitude adjustment function; specifically, as shown in fig. 5, the buffer unit 1640 includes an amplifier a, a fourth resistor R4, a fifth resistor R5, and a sixth resistor R6; the first end of the amplifier A is respectively connected with the second end of the first resistor R1 and the first end of the second resistor R2, the second end of the amplifier A is connected with the first end of the sixth resistor R6, the third end of the amplifier A is respectively connected with the first end of the fourth resistor R4 and the first end of the fifth resistor R5, the second end of the fourth resistor R4 is connected with one end of a power supply, the fourth end of the amplifier A is connected with the second end of the fifth resistor R5 and grounded, the fifth end of the amplifier A is connected with the first end of the sixth resistor R6, and the sixth end of the amplifier A is connected with the other end of the power supply.

Alternatively, the amplifier a may be an operational amplifier; the first end, the second end and the fifth end of the amplifier a may be a positive input end, a negative input end and an output end of the amplifier a, respectively.

In one embodiment, the audio test device further includes a filtering module, an input end of the filtering module is connected with the buffer module, an output end of the filtering module is connected with the input port, and the filtering module is used for filtering the audio test signal after the amplitude adjustment.

Optionally, the filtering module may be configured to filter an interference signal of a specific frequency band in the audio test signal; specifically, as shown in fig. 5, the filtering module may be a low-pass filter, where the low-pass filter includes a seventh resistor R7, an eighth resistor R8, and a capacitor C; the buffer module is respectively connected with the first end of the seventh resistor R7 and the first end of the eighth resistor R8, the second end of the seventh resistor R7 is respectively connected with the second end of the eighth resistor R8, the first end of the capacitor C and the channel selection module, and the second end of the capacitor C is grounded.

Specifically, in the process of multi-channel audio testing, the control module outputs an audio test signal according to the audio test requirement; the buffer module is used for carrying out amplitude adjustment processing on the audio test signal output by the control module, outputting the audio test signal subjected to the amplitude adjustment processing to the filtering module, and receiving the audio test signal and filtering an interference signal of a specific frequency band in the audio test signal by the filtering module; controlling the channel selection module to select one of the plurality of signal transmission channels to output the audio test signal to the device to be tested; the method and the device effectively meet the requirements of the audio test system on the signal waveforms, reduce the interference of noise signals in the audio test signals, improve the efficiency of multipath audio test on the equipment to be tested, effectively ensure that the audio functions of the equipment to be tested meet the normal requirements, and further improve the use experience of the equipment.

In one embodiment, the control module is further configured to generate a hint instruction according to the audio test feature value; the audio test device further comprises a prompt module, wherein the prompt module is connected with the control module, and the prompt module generates an acousto-optic prompt signal according to the prompt instruction so that a tester can acquire an audio test result of the device to be tested.

Optionally, the prompting module may be a light prompting module, a sound prompting module, or an interface prompting module; the prompting signals comprise light signals, sound signals and terminal interface prompting signals; the audio test result may be that the audio function of the device to be tested is abnormal, or that the audio function of the device to be tested is normal.

Optionally, the generating a prompting instruction according to the audio test feature value may be that when the audio test feature value is in a preset range, that is, an audio signal output by the device under test meets the preset audio test standard, a first prompting instruction is generated, where the first prompting instruction is used to indicate that an audio function of the device under test is normal; and generating a second prompt instruction when the audio test characteristic value is not in a preset range, namely the audio signal output by the equipment to be tested does not accord with the preset audio test standard, wherein the second prompt instruction is used for indicating the audio function abnormality of the equipment to be tested.

Specifically, in the multi-path audio test process, the control module analyzes the audio signal to obtain an RMS value of the audio signal and a THD value of the audio signal, and if the RMS value of the audio signal and the THD value of the audio signal are both in a preset range, the audio signal output by the device to be tested accords with a preset audio test standard; meanwhile, the control module generates a prompt instruction, and the prompt module generates an acousto-optic prompt signal according to the prompt instruction so that a tester can acquire an audio test result of the equipment to be tested; the efficiency of the multichannel audio test to equipment to be tested is improved, the audio function of the equipment to be tested is effectively guaranteed to meet the normal requirement, and then the equipment use experience is improved.

Referring to FIG. 6, a block diagram is shown illustrating a specific configuration of a control module in one embodiment.

In this embodiment, as shown in fig. 6, the control module 140 includes an instruction acquisition unit 1420, a signal output unit 1440, and a signal analysis unit 1460.

The instruction acquisition unit 1420 is configured to acquire an audio test instruction input by a user.

Optionally, the instruction obtaining unit may be a functional subunit in the MCU for receiving a test instruction input by a user; the audio test instruction can be an instruction for testing the audio function of the device to be tested, which is generated according to an audio test trigger event input by a user; the audio test trigger event can be touch operation or control voice input by a user through test software, and characterizes audio test requirements of the user.

Optionally, the method for acquiring the audio test instruction input by the user may be that the trigger event is converted into the audio test instruction corresponding to the trigger event by the trigger sensor; the audio test instruction has a one-to-one correspondence with the target transmission channel.

The signal output unit 1440 is respectively connected to the device under test and the instruction acquisition unit 1420, and controls the audio test signal to be output to the device under test according to the audio test instruction.

Optionally, the signal output unit may be a functional subunit in the MCU that controls the audio test signal to be output to the device under test via the target transmission channel.

The signal analysis unit 1460 is configured to be connected to an output end of the device to be tested, receive an audio signal output by the device to be tested after processing the audio test signal, and obtain an audio test feature value according to the audio signal, so as to analyze whether the audio signal output by the device to be tested meets a preset audio test standard.

Optionally, the signal analysis unit may be a functional subunit in the MCU for receiving and analyzing the audio signal output by the device under test after processing the audio test signal.

Optionally, the method for analyzing whether the audio signal output by the device to be tested accords with the preset audio test standard may be that the audio test characteristic value is sent to a special audio test software, the special audio test software judges whether the audio signal of the device to be tested passes the audio test according to the test standard, if the audio test passes, the audio signal output by the device to be tested accords with the preset audio test standard; if the audio test is not passed, the audio signal output by the device to be tested does not accord with the preset audio test standard.

Specifically, in the multi-channel audio test process, the instruction acquisition unit 1420 acquires an audio test instruction input by a user; the signal output unit 1440 is respectively connected to the device under test and the instruction acquisition unit 1420, and controls the audio test signal to be output to the device under test through the target transmission channel according to the audio test instruction; a signal analysis unit 1460 connected to the output end of the device to be tested, for receiving and analyzing the audio signal output by the device to be tested after processing the audio test signal to obtain an audio test characteristic value, if the audio test characteristic value is in a preset range, the audio signal output by the device to be tested accords with a preset audio test standard; the efficiency of the multichannel audio test to equipment to be tested is improved, the audio function of the equipment to be tested is effectively guaranteed to meet the normal requirement, and then the equipment use experience is improved.

The utility model also provides audio test equipment, which comprises the audio test device in any of the above embodiments.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (10)

1. An audio testing apparatus, comprising:

the channel selection module is configured with a plurality of signal transmission channels and is used for outputting an input audio test signal to the equipment to be tested through the target transmission channel;

the control module is used for being respectively connected with the channel selection module and the equipment to be tested, controlling the channel selection module to select the target transmission channel according to the audio test requirement, and receiving the audio signal which is output by the equipment to be tested after the audio test signal is processed, so as to obtain an audio test characteristic value according to the audio signal, wherein the audio test characteristic value is used for representing that the audio signal output by the equipment to be tested accords with a preset audio test standard.

2. The audio test device according to claim 1, wherein the channel selection module is configured with an input port for inputting the audio test signal, a plurality of output ports connected to the device under test, and a controlled port connected to a control terminal of the control module;

the channel selection module is used for receiving the channel selection instruction output by the control module, conducting a signal transmission channel between the input port and the output port of the target according to the channel selection instruction to serve as the target transmission channel, and inputting the audio test signal to the equipment to be tested through the target transmission channel.

3. The audio test device of claim 2, wherein the controlled ports include a controlled enable port and a controlled select port, and the channel selection instruction includes an enable control signal and a channel selection signal, wherein the channel selection module initiates a channel selection mode based on the enable control signal received and determines the output port of the target based on the channel selection signal in the channel selection mode.

4. The audio testing device of claim 2, wherein the control module is further configured to output an audio test signal in accordance with the audio test requirement; the audio test apparatus further includes:

the input end of the buffer module is connected with the output end of the control module, the output end of the buffer module is connected with the input port, and the buffer module is used for carrying out amplitude adjustment processing on the audio test signal output by the control module so that the amplitude of the audio test signal is in a preset amplitude range.

5. The audio testing device of claim 4, wherein the buffer module comprises:

the voltage dividing unit is connected with the output end of the control module and is used for dividing the audio test signal output by the control module so as to adjust the voltage distribution of the audio test signal;

and the buffer unit is respectively connected with the voltage division unit and the input port and is used for buffering the audio test signal subjected to the voltage division processing so as to enable the amplitude of the audio test signal to be in a preset amplitude range.

6. The audio test device of claim 5, wherein the voltage dividing unit comprises:

the first resistor, the second resistor and the third resistor; the first end of the first resistor is connected with the first end of the third resistor, the second end of the first resistor is connected with the first end of the second resistor, and the second end of the second resistor is grounded;

the buffer unit includes:

an amplifier, a fourth resistor, a fifth resistor, and a sixth resistor; the first end of the amplifier is connected with the second end of the first resistor and the first end of the second resistor respectively, the second end of the amplifier is connected with the first end of the sixth resistor, the third end of the amplifier is connected with the first end of the fourth resistor and the first end of the fifth resistor respectively, the second end of the fourth resistor is connected with one end of a power supply, the fourth end of the amplifier is connected with the second end of the fifth resistor and grounded, the fifth end of the amplifier is connected with the first end of the sixth resistor, and the sixth end of the amplifier is connected with the other end of the power supply.

7. The audio testing device of claim 4, further comprising:

the input end of the filtering module is connected with the buffer module, the output end of the filtering module is connected with the input port, and the filtering module is used for filtering the audio test signal after amplitude adjustment.

8. The audio testing device of claim 1, wherein the control module is further configured to output an audio test signal in accordance with the audio test requirement; the control module includes:

the instruction acquisition unit is used for acquiring an audio test instruction input by a user;

the signal output unit is used for being respectively connected with the equipment to be tested and the instruction acquisition unit, and controlling the audio test signal to be output to the equipment to be tested according to the audio test instruction;

the signal analysis unit is used for being connected with the output end of the equipment to be tested, receiving the audio signal output by the equipment to be tested after the audio test signal is processed, and acquiring an audio test characteristic value according to the audio signal so as to analyze whether the audio signal output by the equipment to be tested accords with a preset audio test standard.

9. The audio test device of claim 1, wherein the control module is further configured to generate a hint instruction based on the audio test feature value; the audio test apparatus further includes:

and the prompt module is connected with the control module and used for generating an acousto-optic prompt signal according to the prompt instruction so as to enable a tester to acquire an audio test result of the equipment to be tested.

10. An audio test apparatus, comprising:

the audio testing device of any of claims 1-9.