JP5105977B2 - Acoustic diagnostic system and diagnostic device - Google Patents

Description

  The present invention relates to an acoustic diagnostic system and a diagnostic device thereof.

  Conventionally, when diagnosing an acoustic device, a signal generator that outputs a waveform signal for diagnosis, and a frequency analysis device that collects sound waves output from a speaker included in the acoustic device, converts them into electrical signals, and analyzes them A diagnostic waveform signal output from a signal generator is input to an acoustic device to be diagnosed, and a sound wave reproduced by the acoustic device and output from a speaker is analyzed by the frequency analysis device. The presence or absence of an abnormality in the audio equipment was determined by comparing with the characteristics at the time of shipment. Although not for acoustic use, there is an electric field type ammeter that measures the current flowing through the power line that supplies power to the drive motor that drives the hard disk, and detects an abnormality based on a change in the current as an abnormality detection device. .

JP 2004-318819 A

  Conventionally, acoustic devices have been diagnosed as described above. However, the method of using the frequency analysis device is complicated, and there is a problem that it is not easy for the user to diagnose the deterioration of the characteristics of the acoustic device and the presence or absence of abnormality. Moreover, since the user was diagnosing based on his / her own experience, there was a problem that an error occurred in the diagnosis result. Moreover, it is difficult to detect an abnormality in an acoustic device even with a device that includes an electric field type ammeter that measures current.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to obtain an acoustic diagnosis system that can easily and reliably diagnose an acoustic device and the diagnostic device.

The acoustic diagnosis system according to the present invention includes an acoustic device including a speaker that converts a diagnostic waveform signal into a sound wave, a microphone unit that collects the sound wave, a first storage unit that stores the diagnostic waveform signal, and the microphone unit. The second storage unit that stores the waveform signal collected in step 3, the third storage unit that stores the standard value for diagnosis, and the waveform signal stored in the second storage unit are stored in the third storage unit A control unit that performs diagnosis based on a standard value, and a diagnostic device that includes a connection terminal with the acoustic device, the acoustic device includes a fourth storage unit that stores a diagnostic procedure, and the fourth storage unit Based on the stored diagnostic procedure, the diagnostic waveform signal stored in the first storage unit is read out, the diagnostic waveform signal is output from the speaker, and the diagnostic device is picked up by the microphone unit The waveform signal is Stored in the storage unit, and to store the waveform signal to itself the result of diagnosis based on the stored standard value to said third memory unit.

  According to this invention, since it comprised as mentioned above, there exists an effect which can diagnose an audio equipment easily and reliably.

Hereinafter, an example of an embodiment of the present invention will be described with reference to the accompanying drawings.
Embodiment 1 FIG.
FIG. 1 is a diagram showing an acoustic diagnosis system according to the first embodiment. In the first embodiment, an in-vehicle audio device having four speakers is described as an example of the audio device, but the number of speakers is not limited to four. In addition, the audio equipment is not limited to being used in a vehicle.

  The acoustic diagnostic system according to the first embodiment includes a diagnostic device 10 to which a microphone unit 11 is connected, a USB (Universal Serial Bus) terminal 21 to which the diagnostic device 10 is connected, and a display unit that displays information to the user and has a touch panel function. 24, the acoustic device 20 including the storage unit (fourth storage unit) 25 that stores the specifications and the acoustic diagnosis procedure (sequence program) of the acoustic device 20, the control unit 26 that controls the acoustic device 20, and the acoustic device 20. Amplifiers 22a to 22d that amplify the signals that are connected and output from the acoustic device 20 and speakers 23a to 23d that emit the amplified signals output from the amplifiers 22a to 22d as sound waves, respectively. The speakers 23a, 23b, 23c, and 23d correspond to channel numbers 1 to 4, respectively.

  FIG. 2 is a configuration diagram of the diagnostic device 10 and the microphone unit 11 according to the first embodiment. The diagnostic device 10 according to the first embodiment includes a USB I / F (Interface) unit (connection terminal) 12, a control unit 13, and a storage unit 14. The USB I / F unit 12 is a terminal for connecting the diagnostic device 10 to the audio device 20 for communication. The control unit 13 controls the entire diagnostic device 10, diagnoses the waveform signal collected mainly by the microphone unit 11, and stores the diagnosis result and the collected waveform signal in the storage unit 14. The microphone unit 11 also includes an electroacoustic conversion unit 11a that collects sound waves emitted from the speakers 23a to 23d of the acoustic device 20, an amplifier 11b that amplifies the sound waves collected by the electroacoustic conversion unit 11a, and an output from the amplifier 11b. A / D converter 11c that converts the analog signal to be converted into a digital signal.

  The storage unit 14 includes a diagnostic memory unit 14a that stores a standard value for diagnosing whether there is an abnormality in the audio device 20, a specification memory unit 14b that stores a specification of the audio device 20 that can be diagnosed by the diagnostic device 10, and the audio device 20 A waveform memory unit 14d storing a waveform signal for diagnosis for each measurement item, a sound collection memory unit 14e storing a waveform signal of a sound wave collected by the microphone unit 11, and a waveform signal stored in the sound collection memory unit 14e. The measurement memory unit 14c stores table data in which measurement items and speaker numbers are associated with each other. The waveform memory unit 14d is further logically divided into a plurality of sections (waveform memories 1 to 4), and one type of waveform signal is stored in each section. Similarly, the sound collection memory unit 14e is also logically divided into a plurality of sections (sound collection memories 1 to 12), and one type of waveform signal is stored in each section.

  FIG. 3 is a diagram showing information stored in the diagnostic memory 14a (third storage unit). The diagnostic memory 14a stores in advance standard values for measurement items and speakers. The actual measurement values and the standard values are compared and diagnosed, and the diagnostic results are stored. The calculation of the measurement value and the diagnosis are performed by the control unit 13 and stored in the diagnosis memory 14a.

  FIG. 4 is a diagram illustrating an example of information stored in the specification memory unit 14b. In the specification memory unit 14b, the VENDER_ID (vendor identifier), the PRODUCT_ID (product identifier), the model name, and the like of the audio device 20 that can be diagnosed by the diagnostic device 10 according to the first embodiment are stored in advance. In the example illustrated in FIG. 4, it is possible to diagnose the audio device 20 having the VENDER_ID “0FFF”, the PRODUCT_ID “0010”, and the model name “AUDIO001”. The other items are blank (blank) before the diagnostic device 10 is connected to the audio device 20, and are stored in the storage unit 25 of the audio device 20 when the diagnostic device 10 is connected to the audio device 20. Write the stored specifications in a blank and store them.

  In addition, the audio device 20 has a radio broadcast reception function, and when an abnormality such as reception failure occurs during the reception operation, the information is stored in the storage unit 25 of the audio device 20 as error information. 4 is stored in the specification memory unit 14b of the diagnostic device 10 at the time of the connection as shown in FIG. Similarly, regarding an abnormality such as inability to read a TOC (Table of Contents) of a CD (Compact Disc), when the information is stored as error information in the storage unit 25 of the audio device 20, the above-described abnormality occurs. It is stored in the specification memory unit 14b of the diagnostic device 10.

  FIG. 5 is a diagram showing information stored in the measurement memory unit 14c. The number, measurement item, and channel number of the collected waveform signal are set so that the waveform signal stored in the sound collection memory unit 14e corresponds to which channel number (speaker) and measurement item. Corresponding table data is stored. Here, the measurement item A is a sweep, the measurement item B is a cross modulation distortion, and the measurement item C is an impulse response. Channels 1 to 4 correspond to speakers 23a to 23d included in the audio equipment 20, respectively.

Next, each measurement item A to C will be described.
FIG. 6 is an example of a waveform signal obtained when the measurement item A is measured. A sweep waveform signal whose frequency is changed with a constant amplitude is input to the acoustic device 20, and a sound wave radiated from the speaker 23a is input to the microphone. 3 is an example of a waveform signal collected by a unit 11. The effective value of the amplitude of the waveform signal is the measured value V1 in FIG. Similarly, the measured values V2 to V4 are calculated for the speakers 23b to 23d.

FIG. 7 is an example of a waveform signal when the measurement item B is measured. A sine wave signal of 7 kHz and a sine wave signal of 60 Hz are input to the acoustic device 20, and a sound wave radiated from the speaker 23 a is input to the microphone unit 11. It is an example of the collected waveform signal. The waveform signal includes distortion components E1 to E5 according to the characteristics of the speaker 23a even at frequencies other than the input frequencies of 7 kHz and 60 Hz. By substituting these distortion components E1 to E5 into the following equation (1), the measured value D1 (distortion rate) in FIG. 3 is calculated. Similarly, the measured values D2 to D4 are calculated for the other speakers 23b to 23d.

  FIG. 8 is an example of a waveform signal when the measurement item C is measured, and is an example of a waveform signal in which an impulse wave is input to the acoustic device 20 and a sound wave radiated from the speaker 23 a is collected by the microphone unit 11. . The waveform signal has an attenuation characteristic according to the characteristic of the speaker 23a as shown in FIG. Since the calculation of the impulse characteristics requires a large amount of calculation, the diagnostic device 10 according to the first embodiment does not calculate the measurement value and only stores the waveform signal. A value may be calculated and compared with a standard value.

Next, the operation will be described.
FIG. 9 is a flowchart showing the sound collecting operation of the diagnostic device 10 and the acoustic device 20 according to the first embodiment. When the USB I / F 12 of the diagnostic device 10 is connected to the USB terminal 21 of the audio device 20, power is supplied from the audio device 20 and the power of the diagnostic device 10 is turned on. One of the voltages of the communication line D + / D− terminal of the USB I / F 12 of the diagnostic device 10 is high, and the voltage and the communication speed of the communication line D + / D− terminal are detected by the acoustic device 20. Thereafter, the voltage is lowered from high to low, and RESET (reset) is performed (step ST1).

  Next, the acoustic device 20 performs configuration by requesting device information from the diagnostic device 10, and establishes a link (step ST2). Next, the control unit 26 of the acoustic device 20 confirms the VENDER_ID, PRODUCT_ID, and model name stored in the specification memory unit 14b of the diagnostic device 10, and from the specifications stored in its own storage unit 25, the VENDER_ID, PRODUCT_ID. Then, it is determined whether or not the model names match (step ST3). When the VENDER_ID or the like does not match in step ST3, the control unit 26 of the audio equipment 20 ends the operation. When the VENDER_ID or the like matches, the channel selection button mark is displayed on the display unit 24, and the channel selection button is displayed. When the mark is pressed by the user for 2 seconds or longer, the sequence program stored in the storage unit 25 is read and the diagnosis mode is set (step ST4). If the channel selection button mark is not pressed for 2 seconds or more in step ST4, the operation is terminated.

  Next, the control unit 26 reads out the number of waveform signals stored in the waveform memory unit 14d of the diagnostic device 10 and the address where the waveform signals are stored (step ST5). Next, the controller 26 stores the model name, date of manufacture, AM / FM (Amplitude Modulation / Frequency Modulation) reception function, presence / absence of a CD (Compact Disc) / DVD playback function, and playback. The number of channels (speakers), the attenuation ratio of each channel, and the like are written in the specification memory unit 14b of the diagnostic device 10 (step ST6). Next, the control unit 26 returns the sound quality settings such as bass and treble changed by the user to default values which are factory default values (step ST7).

  Next, the control unit 26 sets the channel number to 1 and the measurement item to A (step ST8). Next, the control unit 26 reads the waveform signal for sweep diagnosis of the measurement item A from the waveform memory unit 14d of the diagnostic device 10 (step ST9), and sets the gain of the transmission path of the channel 1 (speaker 23a) to 0 dB (decibel). ), The gain of the transmission path of the other channel is set to −∞ dB. Next, the control unit 26 outputs the waveform signal for sweep diagnosis acquired in step ST9 to the channel 1 (step ST10). The waveform signal output from the control unit 26 is amplified by the amplifier 22a and radiated as sound waves from the speaker 23a.

  Next, the sound wave radiated from the speaker 23a is collected by the electroacoustic conversion unit 11a of the diagnostic device 10 (step ST11), converted into a waveform signal, amplified by the amplifier 11b, and then the A / D conversion unit 11c. The analog signal is converted to a digital signal by The waveform signal output from the A / D conversion unit 11c is assigned a unique number by the control unit 13 and stored in the sound collection memory unit 14e. In addition, the control unit 13 stores the unique number, the diagnostic item, and the channel number assigned to the waveform signal in the measurement memory unit 14c in association with each other (step ST12). Next, the control unit 26 of the audio equipment 20 advances the channel number by one (step ST13), and determines whether the measurement has been completed up to the last channel 4 (step ST14).

  If the measurement has not been completed up to the last channel 4 in step ST14, the control unit 26 performs the processing from step ST10 to step ST14 until the measurement of the last channel 4 is completed. If the measurement has been completed up to the last channel 4 in step ST14, the control unit 26 advances one measurement item (step ST15) and determines whether the measurement of the last measurement item C has been completed (step ST15). Step ST16). If the measurement has not been completed up to the last measurement item C in step ST16, the control unit 26 performs the processes from step ST9 to step ST16 until the measurement of the last measurement item C is completed, and ends the process.

  FIG. 10 is a flowchart showing a diagnostic operation of the diagnostic device 10 according to the first embodiment. The control unit 13 of the diagnostic device 10 sets the channel number as 1 and the measurement item as A (step ST21), and refers to the measurement memory unit 14c to collect the waveform signal 1-A of the measurement item A and the channel 1. Read from the memory unit 14e (second storage unit) (step ST22). Next, the control unit 13 calculates the effective value of the amplitude of the waveform signal 1-A, calculates the measured value V1, and stores it in the diagnostic memory 14a (step ST23). Next, the control unit 13 calculates an absolute value R1 of a value obtained by dividing the measured value V1 by the standard value SV1. If R1 is within 3 dB, the control unit 13 determines that it is normal, and ERR (0) is greater than 3 dB and less than 10 dB. If so, Δ (ERR1) is stored in the diagnostic memory 14a as being necessary, and Δ (ERR1) is stored as abnormal if R1 is greater than 10 dB (step ST24).

  Next, the control unit 13 advances the channel number by one (step ST25), and determines whether the diagnosis has been completed up to the last channel 4 (step ST26). If the diagnosis has not been completed up to the last channel 4 in step ST26, the control unit 13 performs the processing from step ST22 to step ST26 until the diagnosis of the last channel 4 is completed. If the diagnosis has been completed up to the last channel 4 in step ST26, the control unit 13 advances the measurement item by one and moves to the diagnosis of the measurement item B (step ST27).

  The control unit 13 reads the measurement item B and the waveform signal 1-B of channel 1 from the sound collection memory unit 14e (step ST28). Next, the control unit 13 calculates the intermodulation distortion of the waveform signal 1-B using the above-described equation (1), and stores it in the diagnostic memory 14a as the measured value D1 (step ST29). Next, the control unit 13 compares the measured value D1 with the standard value SD1, and if the measured value D1 is smaller than the standard value SD1, it is determined as normal (ERR0), and the measured value D1 is smaller than the standard value SD1. If the measured value D1 is larger than twice the standard value SD1, Δ (ERR2) is regarded as abnormal if the measured value D1 is larger than twice the standard value SD1. Store (step ST30).

  Next, the control unit 13 advances the channel number by one (step ST31), and determines whether the diagnosis has been completed up to the last channel 4 (step ST32). If the diagnosis has not been completed up to the last channel 4 in step ST32, the control unit 13 performs the processes from step ST28 to step ST32 until the diagnosis of the last channel 4 is completed. If the diagnosis has been completed up to the last channel 4 in step ST32, the control unit 13 sends the measurement item and determination code (ERR0 to ERR0) to the display unit 24 of the audio device 20 if there is an abnormal item or an inspection required item. ERR2) and its channel number are displayed. Based on the instruction from the diagnostic device 10, the control unit 26 of the audio device 20 displays the measurement item and the channel number together with the diagnosis result on the display unit 24 (step ST27), and ends the operation.

  As described above, the acoustic diagnosis system according to the first embodiment includes the waveform memory unit 14d that stores the waveform signal for diagnosis, and the microphone that collects the sound wave output from the speaker 23 of the acoustic device 20 based on the waveform signal. Unit 11, a sound collection memory unit 14e that stores the waveform signal of the sound wave collected by the microphone unit 11, a diagnosis memory 14a that stores in advance standard values for diagnosing the acoustic device 20, and a sound collection memory unit After calculating the waveform signal stored in 14e, the diagnostic device 10 including the control unit 13 for comparing with the standard value, the storage unit 25 for storing the diagnostic procedure, and the diagnostic device 10 based on the diagnosis The audio device 20 includes a control unit 26 that reads a waveform signal stored in the waveform memory unit 14d and emits a sound wave from the speaker 23 based on the waveform signal. Therefore, there is an effect that an audio device can be diagnosed easily and reliably. In addition, there is an effect that no error occurs in the diagnosis result.

  In addition, since the diagnosis result is stored in the diagnosis memory 14a, the diagnosis device 10 is connected to a personal computer or the like, and the diagnosis result is transmitted to the service center or the like via the Internet to perform a more detailed diagnosis and give an instruction. It can also be configured to obtain. Moreover, since the diagnostic device 10 includes the specification memory unit 14b that stores the specifications of the diagnosable audio device 20, only the diagnosable audio device 20 can be appropriately diagnosed. In addition, since an independent power source is not used for the diagnostic device 10, there is an effect that the convenience is high when the diagnostic device 10 is used for the on-vehicle audio device 20.

Embodiment 2. FIG.
FIG. 11 is a diagram showing a configuration of the diagnostic device 10 according to the second embodiment. In the first embodiment, the sequence program that is a diagnostic procedure is stored in the storage unit 25 of the acoustic device 20, but in this second embodiment, the sequence program that is the diagnostic procedure is stored in the diagnostic device 10. A configuration including the sequence memory unit (fifth storage unit) 14f will be described. Since other configurations are the same as those in the first embodiment, the same reference numerals are given and description thereof is omitted.

  FIG. 12 is a diagram showing the contents of the sequence program stored in the sequence memory unit 14f, in which an address where a waveform signal used for measurement is stored and an address where each sequence is stored are stored in association with each other. In sequence 1, an address where waveform signals used in measurement items A to C are stored and a sequence as a measurement procedure thereof are stored. In sequence 2, stored in a sound collection memory unit 14e used for diagnosis. The address of the waveform signal and the sequence that is the diagnostic procedure are stored.

Next, the operation will be described.
When the USB I / F 12 of the diagnostic device 10 is connected to the USB terminal 21 of the audio device 20, power is supplied from the audio device 20 and the power of the diagnostic device 10 is turned on. One of the voltages of the communication line D + / D− terminal of the USB I / F 12 of the diagnostic device 10 is high, and the voltage and the communication speed of the communication line D + / D− terminal are detected by the acoustic device 20. Later, the voltage is pulled from high to low and RESET is performed. Next, the acoustic device 20 performs configuration by requesting device information from the diagnostic device 10 to establish a link.

  Next, the control unit 26 of the acoustic device 20 confirms “VENDER_ID, PRODUCT_ID, and model name” stored in the specification memory unit 14b of the diagnostic device 10, so that “CMD_GET, start address, model name, VENDOR_ID, RESP = OK”. And send. Here, CMD_GET is a command requesting transmission of data in the memory, VENDOR_ID, type name is data requesting transmission, and RESP = OK is a parameter requesting transmission of the last two characters (OK) of transmission.

  When receiving the command from the audio device 20, the control unit 13 of the diagnostic device 10 reads out the requested VNDOR_ID from the specification memory unit 14 b and transmits it to the control unit 26 of the audio device 20. Here, first, only VNDOR_ID is transmitted, and the model name is transmitted as a blank. Next, the control unit 26 of the audio equipment 20 confirms whether or not the transmitted VENDOR_ID matches the VENDOR_ID stored in the storage unit 25. If the VENDOR_ID matches, the “CMD_GET, the start address, the model name code” again. , VENDOR_ID, RESP = OK ”.

  When receiving a command from the acoustic device 20, the control unit 13 of the diagnostic device 10 reads out the requested model name code from the specification memory unit 14 b and transmits it to the control unit 26 of the acoustic device 20. Next, the control unit 26 of the audio device 20 checks whether the upper five characters (first five characters) of the transmitted model name match the model name stored in the storage unit 25, and if they match, Transmits “OK”. Next, the control unit 26 displays a channel selection button mark on the display unit 24, and when the channel selection button mark is pressed by the user for 2 seconds or longer, "CMD_GET, Procedure 1, RESP = OK" is transmitted. To do.

  When receiving a command from the audio device 20, the control unit 13 of the diagnostic device 10 reads the procedure 1 from the sequence memory 14 f and transmits it to the audio device 20. Next, the control unit 26 of the audio device 20 requests the waveform signal required in the procedure 1 to the control unit 13 of the diagnostic device 10 based on the waveform signal address associated with the procedure 1, and the control unit 13 The requested waveform signal is acquired from the waveform memory unit 14d and transmitted to the audio equipment. When receiving the waveform signal, the control unit 26 of the acoustic device 20 transmits “CMD_GET, Procedure 2,... RESP = OK” to the diagnostic device 10 and receives Procedure 2. The control unit 26 executes the measurement process based on the procedure 2, and when the execution of the procedure 2 is completed, the procedure 26 and the procedure 4 are executed in the same manner, and the process is executed until the last procedure is completed.

  As described above, the diagnostic device 10 includes the sequence memory unit 14f that stores a sequence program that is a diagnostic procedure, and the acoustic device 20 reads the sequence program and executes the diagnosis based on the sequence. There is an effect that diagnosis can be executed even if the device 20 does not have a sequence program. Other effects are the same as those of the first embodiment.

Embodiment 3 FIG.
FIG. 13 is a diagram showing a configuration that is a main part of the acoustic diagnosis system according to the third embodiment. In the first embodiment, the diagnostic device 10 includes the microphone unit 11, and the sound waves emitted from the speakers 23 a to 23 d of the acoustic device 20 are collected by the microphone unit 11. In the third embodiment, the USB I / F 30 e is installed. The form using the microphone 30 which has is demonstrated. The microphone 30 includes an electroacoustic conversion unit 30a that collects sound waves radiated from the speakers 23a to 23d of the acoustic device 20, an amplifier 30b that amplifies the sound waves collected by the electroacoustic conversion unit 30a, and an analog signal output from the amplifier 30b. An A / D conversion unit 30c that converts to a digital signal, a CPU (Central Processing Unit) 30d that performs arithmetic processing, and a USB I / F unit 30e that connects to a HUB (hub) 40 are provided. The HUB 40 includes a plurality of USB I / Fs 40a, and the diagnostic device 10, the audio device 20, and the microphone 30 are connected to each other via the HUB 40. Since other configurations are the same as those in the first embodiment, the same reference numerals are given and description thereof is omitted.

Next, the operation will be described.
When the diagnostic device 10, the audio device 20, and the microphone 30 are connected to the HUB 40, the diagnostic device 10, the audio device 20, and the microphone 30 to which the HUB 40 is connected are detected, and each is reset to establish communication. Next, the acoustic device 20 allocates a unique identifier (address) to the diagnostic device 10 and the microphone 30, acquires a device ID, and confirms the configuration. Since the subsequent operation is the same as that of the first embodiment, the description thereof is omitted.

  As described above, if there is the microphone 30 provided with the USB I / F 30e, the microphone unit 11 of the diagnostic device 10 can be omitted, and the manufacturing cost can be reduced. Other effects are the same as those of the first embodiment. Similarly to the second embodiment, the diagnostic device 10 may be configured to include a sequence memory unit 14f that stores a sequence program that is a diagnostic procedure. In this case, the same effect as in the second embodiment is obtained.

  In the first to third embodiments, the control unit 26 of the audio device 20 executes the sequence program. However, the control unit 13 of the diagnostic device 10 executes the sequence program, and controls the audio device 20 based on the sequence program. The unit 26 may be configured to instruct a procedure.

It is the figure which showed the acoustic diagnostic system by this Embodiment 1. FIG. It is a block diagram of the diagnostic apparatus by this Embodiment 1. FIG. It is the figure which showed the information memorize | stored in the diagnostic memory. It is the figure which showed an example of the information memorize | stored in the specification memory part 14b. It is the figure which showed the information memorize | stored in the measurement memory part. It is an example of the waveform signal obtained at the time of the measurement of the measurement item A. It is an example of the waveform signal obtained at the time of the measurement of the measurement item B. It is an example of the waveform signal obtained at the time of the measurement of the measurement item C. It is the flowchart which showed the sound collection operation | movement of the audio equipment by this Embodiment 1, and a diagnostic apparatus. It is the flowchart which showed the diagnostic operation | movement of the diagnostic apparatus by this Embodiment 1. FIG. It is the figure which showed the structure of the diagnostic apparatus 10 by this Embodiment 2. FIG. It is the figure which showed the content memorize | stored in the sequence memory part. It is the figure which showed the structure used as the principal part of the acoustic diagnosis system by this Embodiment 3. FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 Diagnosis apparatus, 11 Microphone part, 11a Electroacoustic conversion part, 11b Amplifier, 11c A / D conversion part, 12 USB I / F (connection terminal), 13 Control part, 14 Memory | storage part, 14a Diagnostic memory part (3rd memory | storage part) ), 14b Specification memory unit, 14c Measurement memory unit, 14d Waveform memory unit (first storage unit), 14e Sound collection memory unit (second storage unit), 14f Siemens memory unit (fifth storage unit), 20 Audio equipment, 21 USB terminal (connection terminal), 22a, 22b, 22c, 22d amplifier, 23a, 23b, 23c, 23d speaker, 24 display unit, 25 storage unit (fourth storage unit), 26 control unit, 30 microphone, 30a electroacoustic Conversion unit, 30b amplifier, 30c A / D conversion unit, 30d CPU, 30e USB I / F unit, 40 HUB, 40a USB I / F F.

Claims (4)

A microphone unit for collecting sound waves, a first storage unit for storing waveform signals for diagnosis, a second storage unit for storing waveform signals collected by the microphone unit, a third storage unit for storing standard values for diagnosis, A control unit for diagnosing the waveform signal stored in the second storage unit based on a standard value stored in the third storage unit, and a connection terminal with an audio device;
A diagnostic procedure is received from an audio device , the diagnostic waveform signal read from the first storage unit and radiated from a speaker based on the diagnostic procedure is received by the microphone unit, and the waveform signal collected by the microphone unit is received. A diagnostic device that stores in the second storage unit and stores a result of diagnosing the waveform signal based on a standard value stored in the third storage unit. An acoustic device including a speaker that converts a diagnostic waveform signal into a sound wave;
A microphone unit that collects the sound wave, a first storage unit that stores the waveform signal for diagnosis, a second storage unit that stores a waveform signal collected by the microphone unit, and a third memory that stores a standard value for diagnosis A control unit for diagnosing the waveform signal stored in the second storage unit based on a standard value stored in the third storage unit, a diagnostic device including a connection terminal with the acoustic device,
In an acoustic diagnosis system consisting of
The audio equipment is
A fourth storage unit that stores the diagnostic procedure; based on the diagnostic procedure stored in the fourth storage unit; reads out the diagnostic waveform signal stored in the first storage unit; Output from the speaker,
The diagnostic device is
The waveform signal collected by the microphone unit is stored in the second storage unit, and the diagnosis result of the waveform signal based on the standard value stored in the third storage unit is stored in itself. Acoustic diagnostic system. The audio equipment is
Transmitting the identifier stored in the fourth storage unit to the diagnostic device;
The diagnostic device is
It has a specification memory part that stores identifiers of diagnosable audio devices,
The acoustic diagnosis system according to claim 2, wherein the diagnosis is performed when an identifier stored in the fourth storage unit matches an identifier stored in the specification memory unit. It has a specification memory part that stores identifiers of diagnosable audio devices,
The diagnostic device according to claim 1, wherein the diagnosis is performed when an identifier received from the acoustic device matches an identifier stored in the specification memory unit.

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