TW558434B - Electronic auscultation device and method - Google Patents

Abstract

The invented electronic auscultation device and method are applied in a medical diagnostic environment in order to digitize the auscultation sound and perform a sound frame accumulation calculation; the calculation result is used to control the noise output; furthermore, the sum of the energy of the sound frame and the average environmental noise of the sub-frequency band are used as the basis for noise filtration so that, a user can use the invented device to filter and attenuate the received noise signal and select different frequency band for signal output in real time to enable the user to receive an accurate and clear auscultation noise.

Description

V. Description of the Invention (1) [Technical Field of the Invention] ^ The invention relates to an electronic auscultation device and method device and method; in particular, the 4th, the present invention is applied to a medical diagnosis environment by the energy of the sound frame The cumulative sum is used as an electronic stethoscope and method for controlling noise filtering and snuggling to improve the quality of sound signal acquisition. [Background of the Invention and Known Technology] According to the known technology, a conventional stethoscope collects sound signals such as d chest breathing by touching the surface of the human body with a rachel-shaped sound cover, and uses the mechanism shape of the sound cover to amplify the sound resonance. The sound is transmitted to the ear through the sound tube. The 4th and 4th person can make further diagnosis based on the sound, but this mechanical sound cover can only amplify the sound and has no filtering effect, such as : When the user uses the stethoscope to make sounds, it is easy to move the sound cover; Amplify the sound of the sounds caused by friction between clothes and fingers, making it uncomfortable, and the friction between the sound cover and the human skin surface will also be The main voice is confused or disturbed, the voice of the auscultation is not clear enough, and the accuracy of the judgment is affected. In addition, because the sound tube of the traditional stethoscope is often exposed to the outside, it is easy to generate noise due to bumping. „Auscultation earplugs are designed to isolate external environmental sounds. When you use the earphones, you have to plug the ears. It is comfortable and must be worn and removed frequently in order to communicate with the patient. It is also not conducive to use. Because the traditional auscultation H system simply uses the ㈣ sound mask to capture the internal sound signals of the human body, so we summarize "the shortcomings of dry use, For example, the material amplified by j is reduced by the material ― and the frequency band set by the material is 之 -Qing Band) as the sound of the sound is too large. It cannot be removed when it is used. Explanation (2) The sound signals of friction sound, collision sound, and air resonance in the sound enclosure are disturbed, which causes the diagnosis to be incorrect. Therefore, the object of the present invention is to provide an electronic auscultation: use Before the person hears the sound, use the wave filter to eliminate the specific two: of: The method of accumulating energy in the frame of Γ is used as the basis for noise elimination and the opening and closing of the turn to further improve audio access. Another quality of Lamin - mesh (iv) - electronic auscultation apparatus and method, 2,, ° &. -. Digital signal processor (DSP) and to select the frequency band of noise advanced

Processing to improve the quality of audio capture. A

[Summary of the Invention] Due to the conventional technology, the stethoscope only uses the mechanical sound cover to extract the sound signals inside the human body. It cannot amplify the high-magnification sound signal or the specific sound frequency band. The generated frictional sound, collision sound, and air resonance sound in the sound enclosure, etc., may easily cause the sound signal to be disturbed and cause incorrect diagnosis. Therefore, the present invention provides an electronic auscultation device and method for processing audio signals by combining a plurality of converters, filters, controllers, and frequency band selectors between sound receiving speakers. ^ Improve the quality of the audio output from the speaker. After the audio passes through the sound collector and amplification circuit, the low-frequency components are first filtered out by a high-pass filter, and then digitized and transmitted to a microcomputer controller. The microcomputer controller accumulates the total energy of a number of sound frames (Audio Frame) 4 with a predetermined length, so as to determine whether to turn the output switch on and off to turn the audio to the speaker; the invention and further Combined with a band selection (please read the precautions on the back before filling this page)

χ 297 g t) 558434 Λ7 B7_ V. Description of the invention (3) Selector and multiple band filters for users to choose to capture sound signals in a specific frequency band, so that they can clearly listen to the collected sound. [Comparison explanation of main component symbols] 1 ... Sound collector 2 — First amplification circuit 3 — Yutong》 Issue 4… A / D converter 5 —- Microcomputer controller 6 —- Band selector Ί ... Band filter 8 — output switch 9 —- second amplification circuit 10 — speaker 11 — Xing line transmission interface 12 — temporary storage Is 13 — digital signal processor 14 — _ D / A converter 101 — — sound collection program 102 —-sound Enlarged program Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs (please read the precautions on the back before filling this page) 103-—High-pass filtering program 104… A / D conversion program 105-—Sound box accumulation program 106-—Close output Program 107 --- Open output program 3 This paper size applies Chinese National Standards (CNS) Al Regulations (210 X 297 mm) 558434 A7 Intellectual Property Bureau, Ministry of Economic Affairs, Consumer Consumption Cooperatives #

The paper size is based on Guan Jiaxian (cns) XTStH V. Description of the invention (4 108 Noise cancellation program 109 --- Sound amplification program 110 --- Sound output program 111- --- Band selection program 112 ... D / A conversion program [ Detailed description of the invention] Although the present invention will be fully described with reference to the accompanying drawings containing preferred embodiments of the present invention, it should be understood before the description that those skilled in the art can persuade the description in this article Invention, while achieving the effects of the present invention. Therefore, in order to understand the following description is a broad search for those skilled in the art, and its content is not intended to limit the invention. Please refer to FIG. 1, which shows the invention The first embodiment of the electronic auscultation device is an architecture diagram. As shown in the figure, the electronic auscultation device of the present invention digitizes the audio between the sound receiving = 1 and the loudspeaker ③ 1G. Based on a microcomputer control device 5 based on -The calculation result of the energy of the sound frame is used to control whether the sound is received at $ 1 or not. The electronic consultation device of the present invention further includes a frequency band selector 6 and a plurality of frequency bands. Device 7, Provide the user to select the sound signal of the specific frequency band to be extracted, and send it to the speaker 10 via the output switch 8. In the embodiment of this service, a kind of electronic auscultation device basically includes two collections. It is used to receive the sound signal input by the user, where the sound collector 1 can be implemented by -clip # by a microphone; at least one amplification line is connected to the sound recognition of the sound collector 1, and the third secret is -Guanglun end It is used to amplify the above-mentioned audio signal, M and a speaker state 10, and it is used to receive the amplified audio signal for sound.

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V. Description of the Invention (2) In the first preferred embodiment of the present invention, in order to digitize the audio to calculate a preset sound frame M, the electronic auscultation device is then placed in the sound collector, i, and speaker 10 It includes: a first amplification circuit 2 connected to the signal output terminal of the sound collector 1 to amplify the aforementioned sound signal; a high-pass filter 3 connected to the signal output terminal of the -amplified circuit 2 to eliminate The two-frequency component of the sound signal; an A / D converter 4 is connected to the output terminal 4 of the aforementioned high-pass filter 3, for receiving the high-frequency signal filtered by the aforementioned high-pass filter 3, and converting the high-frequency signal An analog signal is converted into a digital signal; a microcomputer controller 5 is connected to the signal wheel output end of the A / D converter 4 and calculates the digital sound signal based on a preset sound frame. The total energy of the sound frame is used to determine whether the total energy of the sound frame exceeds a preset transmission energy level (or threshold) to determine whether to output a sound signal. An output switch 8 is connected to the signal output terminal of the first amplification circuit 2. To receive audio signals and connect The micro-computer control whether the hoist controller 5 outputs the sound signal; and a second amplifier circuit 9 is connected to the signal output terminal of the switch 8, for amplifying said audio signal and outputs to the speaker 10. In addition, in the first preferred embodiment of the present invention, in order to provide a doctor or a nurse to effectively listen to the sound of different parts of the body, the electronic auscultation device of the present invention further includes: a plurality of frequency band filters between the sound collection 1 and the output switch 8. The receivers 71, 72, 73 receive sound signals input by the sound collector i to filter out sound signals of different frequency bands; and a frequency band selector 6 provides doctors or nurses to select filters 71, 72, 72 of different frequency bands, 73 to filter the aforementioned sound signals; among which 'the band filters 71, 72, 73 may be any kind of low-pass, high-pass, or band-pass waveband; in this paper Standards apply Chinese standards (CNSW regulations (210 X 297 meals) (Please read the precautions on the back before filling out this page) _ 装 -------- Order ---------. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 5 558434

V. Description of the invention (6) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs. Take three types of filtering as an example. For example, the band filter can be set to Bell Mode and the frequency range is set to 2. Up to 2000Hz, the most prominent for listening to heart sounds, Diaphragm Mode, whose frequency range is 100 to 500Hz 'is best for listening to lung breathing sounds; and the frequency range is 0 to 1000Hz' for listening to high High-frequency sound, suitable for high-frequency sound of the abdominal cavity. Please refer to FIG. 2, which is an implementation architecture diagram of a second embodiment of the electronic auscultation device of the present invention. In the second preferred embodiment of the present invention, the structure of the electronic auscultation device is the same as that of the embodiment in FIG. 1, but further-combined with the wireless transmission interface 11 (WirdeSS interface). The wireless transmission interface may be It is a radio wave (Radio FreqUency) or infrared (Infrared) transmission component, and the sound signal output through the second amplification line 9 can be transmitted through this interface u, so that the remote wireless receiver can put the received data Come out to facilitate remote broadcasting and teaching. Please refer to FIG. 3, which is the first implementation flowchart of the electronic auscultation method of the present invention, and please refer to FIG. 2. The method implemented by the electronic auscultation device of the present invention includes the following procedures: Procedure 101: Sound collection by The sound is collected to collect the input voice, and the signal is transmitted to the first amplification circuit 2. Program 102: Sound Amplification This program amplifies the signal from program 101 and the sound output from the first round of the sound collector, so as to provide sufficient sound resolution in the following program. (Please read the > i urgent matter on the back before filling in this page) -ti ------ order -------- ·

558434 A7

Ministry of Economic Affairs, Intellectual Property Bureau, employee consumer cooperative prints program 103: The high-pass filter will remove the low-frequency #money from the sound signal amplified by program 102 through a high-pass filter, which means that a signal higher than a certain frequency passes, such as ,: Set to pass only signals with frequencies above · ΗZ and pass the passed signals to an A / D converter 4. Program 104: A / D conversion This program is to digitize signals. The high-frequency signal obtained through program 103 is converted from analog signals to digital signals through an A / D converter 4 '. Program 105: The sound box accumulates the sound signal or the background noise of the environment. After the sound signals are input and the signals are digitized by programs 101, 102, 103, and 104, the digital signals are transmitted to a microcomputer controller 5 and borrowed. Thus, the microcomputer controller 5 accumulates the energy of a sound frame. The following will further illustrate the method of sound box accumulation, and the equation is as follows:

Ei = Σ ⑴ = / = 1 As shown in equation (1), where is set to the total sound energy of a sound frame, the heart is the energy after digitization of each input sound, and η is the total sample in the sound frame. Sampling Data, where the length of the sound box can be set with the amount of data. For example, if the sampling frequency (Sampling Frequeney) * 讣 Hz, the sound frame of 256 samples of data, the sound box length is 32 millisecond. The sound energy accumulated in the above frame is used for judging whether the input sound is greater than the preset accumulated value. In the present invention, when the accumulated sound frame energy exceeds an energy accumulation preset value a, the microcomputer controller 5 determines that the input sound is noise, but the paper size of this discrimination is applicable to the Chinese National Standard (CNS) A4 regulations (21 °). X 297 mm) 7 IIIIIII · IIIIII — ^^ * | Snow ||| — 1 · (Please read the notes on the back before filling out this page) 558434 A7 B7 V. Description of the invention (8 The response of the chirp signal is not fast enough Therefore, the present invention is able to make the 2: !! tone change situation more instantaneous by using the method of moving the sound frame (M_g 亀 "), the total energy of the ten different vowels. The calculation equation is as follows:

Ei- \ + e / -et-n + l ； i > n ... (2) 'n is the total number of data points in the sound frame, when the total energy of the sound frame exceeds -pre-feasibility; '^ Sound, and the microcomputer controller 5, the turn-off switch 8 is turned off, so that the speaker 10 is output in a mute (Mute), so that = = expected and disturbed. ㈣, the size of the sound frame shift will also be ^ i Do not adjust the sensitivity of the sound. When the sound frame moves larger, the later the pure sound is identified, and the smaller the day frame moves, the more sensitive the noise recognition is. Because moving the sound collector to the auscultation site to overbook === generate 嶋, and the sound coffee moves to 隼 cry nl * θ, it will make the user's ears uncomfortable; wait for the sound J 2: After that, the aforementioned noise will not be Is being produced. Therefore, for the purpose of measuring noise in the debt, the present invention can also be preset-the second energy accumulation duty value B, and the value "B" is less than the preset value A, then the preset value a is used to identify the beginning of the chewing sound | and the B value It is used to discriminate whether the noise is terminated. When the noise is started, the output will be stopped and the program will be entered into 106. When the noise is terminated, the output will be turned on immediately and the program will be entered into program 10.7. When the total energy of the frame passes the conditions preset in program 1G5 through the sound frame of program 105, the input sound Khan Day l 'is not used as the turn-on of the sound signal. At this time, the paper size of the microcomputer applies the Chinese national standard (CNS) A4 specifications (210 X 297)

Printed by the Intellectual Property I Fee Cooperative of the Ministry of Economic Affairs

^ 58434 The controller 5 controls the wheel-out switch 8 to turn off the output sound signal to the speaker 10, so that the user will not be disturbed by the noise signal. Program 107: Turn on turn-out ;: After the total energy of the sound box is judged by the accumulated sound box of program 105, if the accumulated energy of the sound box is lower than the conditions preset in program 1G5, the sound of the round-in sound is considered slavery At this time, the microcomputer controller 5 will control the output switch 9 to turn on and read out the sound signal and proceed to the next step. The program uses an oscilloscope or digital signal processor (e.g., "or, DSP") The signal of the frequency band to be used is taken out. Program 108: Noise Cancellation No. 2 is used for diagnosis of patients. In addition to the collected sounds, they also include air resonance, the patient's talking voice, parent, and material. Among them, The air resonance sound is the smallest of all sounds after high volume, so for the air resonance: 3 / show 'can be solved by the noise treatment method of the present invention, the material is described, and the description is given. In addition, the patient's voice I heard weeping and coughing sounds, because these volumes are generally very large, and the husband = controller 5 can borrow ⑽ to identify these sounds. Li will program 109 ·· Signal Amplifier Shilvzheng This program is a program ⑽ Transmitted voice message The signal is amplified and transmitted to the speaker 10 by the large, spring road 9. Brother-Zi program 110 ·· The sound output will turn out the audio from the speaker 〖〇 sound. Κιβ ^ -------- Order ----- f Please read the notes on the back before filling in this page)

-1 · ϋ I

This paper size is suitable for t ® @ (CNS) A4 ^ (21〇TiT ^ 558434 Printed by the Consumers ’Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 B7 Invention description (10) In addition, the user can use the frequency band selector 6 and the frequency wave The sound signal of the sudden == fixed frequency band, for example, the frequency of the device 6 3 = frequency: according to the wave device 7 selects different frequency ranges to auscultate heart sounds, lung 4 breathing sounds, or high-frequency sounds of the abdominal cavity. Implementation: I图: Figure: i shows the composition of the third embodiment of the audio capture device of the present invention. In the third preferred embodiment of the present invention, it can be combined with a number of tiger processors 13 处理器 for band selection and advanced Noise treatment ^ ⑽ 心 1.11). The electronic auscultation of this embodiment of the present invention = digitizes the audio between the collector 1 and the speaker 1G, and determines whether the digital audio in the turn is based on the calculation result of the _ preset sound frame energy by the computer controller 5 It also sounds in turn; its towel, the electronic auscultation device of the present invention goes to the speaker 10 6 and the digital signal processor (DSP) 13 == contains -band selector illusion 1 the user selects the sound of a specific frequency f ^, And advanced noise treatment. = This invention ^ Three best practices_, the electronic auscultation device then includes between the sound receiving 1 2 and 1, and the sound benefit 1 ():-the-amplified circuit 2 'is connected to the signal output terminal of the sound collecting @ 1 'To amplify the sound signal;-A / D conversion L4 is connected to the signal wheel output of the first amplifying circuit 2 mentioned above, and is used to convert the analog signal into an analog signal and convert it into a digital signal. The output end of the signal wheel of the A / D converter 4 is calculated based on a preset = box to calculate the total frame of the aforementioned digital sound signal. Based on this, it is determined whether the total energy of the frame exceeds the preset transmission energy level. (Or threshold) to determine whether: the sound signal is output; a D / A converter 14 'is connected to the aforementioned microcomputer-controlled "5 signal wheel output end" to convert the sound signal output from the digital letter paper to the Chinese standard National Standard (CNS) A4 Specification (210 X 297 public) 10 ------------ Installation—— 丨 Order · 1 丨! --- (Please read the precautions on the back before filling in this (Page) 558434 A7 V. Description of the invention (11) Replaced by analog signal; a second amplification circuit 9 is connected to the ## output terminal of the D / A converter 14 for The aforementioned analog sound signal is output to the speaker 10 ′ and a frequency band 1 ¾ Is 6 ′ and is connected to the signal round-in end of the microcomputer controller 5 to control the microcomputer controller 5 to output sound signals of different frequency ranges. In order to effectively process the sound signals According to the problem of wave and noise and reducing the computing load of the microcomputer controller 5, the electronic auscultation device still includes: a digital signal processor U and a register 12, connected to the microcomputer controller '5. In this embodiment, ㈣A The digital signal time domain (Tune Domain) signal converted by the / D converter 4 can be converted into other types of regional signals by the instruction of the microcomputer controller 5. Generally, a typical discrete conversion type can be used.

Transformatlon), such as the Fourier transform (Four transformation), its equation is as follows: Order 00 ⑶ {ά} = Χ {ω) = Σ x {n) e'jwn =) is in time :? Bit data, ⑷ and x (_ to frequency or second, to read subjects. In this embodiment, when the sound signal is converted into a digital signal via A / transfer and transmitted to the microcomputer processor 5 _, microelectronics = 5 series by The digital signal processor 13 performs discrete conversion of the riding speed to obtain signals of different frequency bands, which can be stored in the register 12 and is used to calculate the total energy of the sound box of the digital sound signal. The sound signal is processed according to 2 and is based on the frequency band. Select g 6 to make a sound decision, and then use D / A to convert n 14 to _, °, 1, signal output. &Quot; Comparison, and pass to the speaker H) Play this paper paper size thorn t Guanjia Fresh (CNS) A4 size: 297 mm 11 558434 A7

Please read the precautions before completing this page. 558434 Printed A7 by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs. 5. Description of Invention (l3) is a radio frequency or infrared playback component. The sound signal output from the amplification line 9 can be transmitted through this interface, so that the remote wireless receiver can play the received signal, and can be combined with the temporary memory 12 to record the processed sound digitally. The signal is repeatedly extracted and played, which is convenient for remote broadcasting and teaching. Please refer to FIG. 6, which is an implementation architecture diagram of a fifth embodiment of the electronic auscultation device of the present invention. As shown in FIG. 6, the electronic auscultation device of the present invention digitizes audio between the sound collector 1 and the sounder 10. The input audio of the sound collector 1 is divided into two channels, and one channel is digitized. A frequency band selector 6 and a plurality of frequency band filters 71, 72 are used to provide the user with the option to digitize the sound signal of the specific frequency band to be captured in the input audio, and the other channel is to extract the high frequency of the round-in audio The frequency component is digitized, and based on the calculation result of the preset sound frame energy, the first microcomputer controller 5 controls whether the digitized sound signal of the selected frequency band is output to the speaker 10 via the D / A converter 14. In the fifth preferred embodiment of the present invention, in order to digitize high-frequency audio to calculate-set the sound box energy f, the electronic auscultation device includes:-a first amplification circuit 2, connected to the signal wheel of the sound collector i The output end is used to amplify the input sound signal; the L wave device 3 is connected to the signal output end of the first amplification line 2 to filter out the low frequency components of the sound signal; an a / d converter 4 is connected to the pass The signal output terminal of the filter 3 digitizes the high-frequency sound signal to provide the high-frequency digitized sound signal to the microcomputer controller 5 and based on the calculation result of the preset sound frame energy, whether to output the sound signal or not Decide. ------------ Install i I (Please read the precautions on the back before filling this page) Order ·

The Zhang scale is applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 Gongchu) — a · _ — 558434 Printed by the Consumers ’Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 5. Description of the invention (14) In addition, in order to provide users with choice A specific frequency band for inputting audio # The device includes: a plurality of frequency band filters 71, 72, and 73, which receive sound signals output from the M-amplified line 2 for the purpose of extracting different frequency bands No. 5, · -band selector 6 Provide users with the option to select different frequency bands. 72 ,,? To filter the sound signal; an A / D converter 4 is connected to the output end of the signal wheel of the filters 7, 72, and 73. In response to the choice of the frequency band selector 6, the special money The output signal is digitized, so as to provide the digitized sound signal of the specific frequency band to the microcomputer controller 5. In this embodiment, the microcomputer controller 5 receives the high-frequency digital sound signal of the turn-in audio and the digital sound signal of a specific frequency band through the digitalization of the two channels, and calculates the aforementioned height based on the preset sound box. Frequency digital sound signal frame total energy, based on which to determine whether the total energy of the sound frame exceeds a preset 'round; moon level (or threshold) to determine whether to output digital sound signals in a specific frequency band; a D / A converter 14 , Connected to the output end of the signal wheel of the aforementioned microcomputer controller 5, Asia converts the digital sound signal of the specific frequency band into an analog audio, and amplifies the analog audio through a second amplification line 9 and outputs it to the speaker 10. Please continue to refer to FIG. 6, and please refer to FIG. 2 and FIG. 5 together, which are implementation diagrams of the fifth embodiment of the electronic auscultation device of the present invention. In the fifth preferred embodiment of the present invention, a wireless transmission interface may be further combined, wherein the wireless transmission interface may be a radio wave or infrared playback component, and the sound output through the second amplification line 9 The signal can be transmitted through the interface 11 ', so that the remote wireless receiver can play the received signal. This rule states that the government electricity controller 5 is equipped with a register 12 to record digitally processed sound data, and to delay the predetermined sound frame length to calculate the sound. The paper size applies the Chinese national standard (CNS ) A4 specification ⑽χ 297 public director) < Please read the notes on the back before filling this page)

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Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs

The sound frame energy 'is used as the basis for judging whether the sound is played and the voice attenuation. The stored auscultation sound data can be repeatedly extracted from the broadcast text, which is convenient for wireless broadcast and teaching. Spray > See Figure VII for a second implementation flowchart of the electronic auscultation method of the present invention, and please refer to Figure 6. The method implemented by the electronic auscultation device of the present invention includes the following procedures: Procedure 101: Sound collection by The sound collection 11 1 collects input audio, and transmits the input audio to the first amplified line 2. Program 102: Amplify the sound This program is to amplify the signal at the end of program 1G1, the sound collector, and then use: "U big: Road 2 to amplify, and the amplified sound signal will be transmitted separately through the two chemical processing systems. The high-pass oscilloscope 3 and the frequency band are 72, 73, and the resolution is provided in the following program 103 and ⑴ to maintain the sound quality of the sound. 4th program 103a / 103b: High-pass filtering / A / D conversion program The amplified sound signal transmitted to the two-pass filter 3 in 102, and the low-frequency signal is filtered out by the high-pass filter 3, and only passes above a certain J. For example, it can be set to allow only signals with a frequency above 5_z to pass. The signals are digitized by the A / D converter 4 and processed by the microcomputer controller 5. The main program llla / lllb of the No. 1 carrier: Band selection / A / D conversion sends the program 102 to the band oscillator 71, ^ 、 7 signal 'can be used by—band selector band mu (please read the precautions on the back before filling this page)

-— — — — — — I — I · 1111111 ·

This paper scale applies the Chinese National Standard (CNS) A4 specification (210 558434, printed by the Consumer Property Cooperative of Intellectual Property Bureau of the Ministry of Economic Affairs, printed A7 V. Invention Description (le) 73 to filter the amplified sound signal, and the signal passed by an A / The d converter 4 is digitized and transmitted to the microcomputer controller 5. Program 105: The sound box accumulates the sound of the auscultation or the background noise of the environment. The sound signals are rotated and digitized by programs 101, 102, 103, and 111. After processing, the digital signals are respectively transmitted to a microcomputer controller 5; the microcomputer controller 5 accumulates the energy of a sound frame i based on the high-frequency T sound signal, as described in the previous embodiment, to determine whether to output the selected frequency band. Sound signal. The judgment method implemented by the microcomputer controller 5 is the same as the program j 〇5 shown in Figure 2. When it is said that the start of the voice is detected, it is immediately: stop outputting the sound signal with snoring and return to the program 103 to continue Detect alpha dead sound; when the beep sound is terminated, the computer controller 5 outputs a digital sound signal of the selected frequency band and enters program 112. Program 112: D / A conversion judges the selection of program 105 by rotation Band digital sound signal D / A converter 14, converts to an analog audio, to obtain the sound signal of the auscultation fixed frequency band. Program 109: Sound amplification This program is to use the analog audio which is turned out by program 112 and then use the largest The line 9 amplifies the signal and transmits it to the speaker 10. Program 110: The sound turns out, and the sound out of the sound is emitted from the speaker 10. In the present invention—a preferred embodiment, the present invention ## and time discrimination detect The sound signal is controlled by a microcomputer. ^ Zhang scale is applicable to Zhongguanjia standard (ϋ_Α4 sizeΑG X 297 male 1 " ----------- installation -------- order ----- --- (Please read the notes on the back before filling out this page) DS434 Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economics B7 V. Invention Description (I7) = Manufacturer (V * 0perated Transmissi (m, ν〇χ), Utilizing the frictional sound generated when the sound collector touches the object, the microcomputer controller 5 reverts to the operation mode to save power when Xunzhen detects the signal of the wheeler. In another preferred embodiment of the present invention, the microcomputer controls Device 5 uses temporary memory to store digitized sound The signal is used for noise detection, processing, and playback. After a detailed description of the preferred embodiment of the present invention, those skilled in the art can clearly understand that it can be used without departing from the scope and spirit of the patent. Progress: Various changes and modifications, and the present invention is not limited to the second embodiment of the description, way 'for example: the present invention can be an independent electronic auscultation device, with a transmission interface, through its audio and audio The transmitting end is connected to the wireless playback interface, or the device of the present invention can be directly built into the ear and implemented ▲. In addition, the present invention uses the sound frame energy of an environmental sound to set a one-stage energy threshold. It can also dynamically adjust the sound frame energy of the ambient sound. 2 = The invention device can adapt to the user's environment and effectively pass through data. Said 'Quite rising audio capture quality. [Effect of the invention], the invention of the electronic auscultation device and method will have many advantages and features. This 2 provides a kind of application in the environment of medical diagnosis. By using the accumulated energy of the sound box as the standard for starting the audio rotation control, it is possible to avoid habituation. Take: The friction sound, collision sound and air in the hood caused by the use of the sound = L is incorrect because the sound is taken incorrectly, thereby improving the correct operation of the message = the difference between the device and the method—the advantage is the combination of _ Register and micro-electronics' digitize the voice input by the user, and digitize the data; Paper size suitable for financial specifications (210 17 X 297 mm) 558434 A7 __B7_ V. Description of the invention (I8) Excessive noise Elimination and attenuation processing is stored in a temporary register, and the sound frame energy accumulation is used as the basis for starting the output channel, thereby improving the integrity of the transmission message reception.俾 Make the sound signal obtained by the user conform to the correctness and integrity. (Please read the precautions on the back before filling out this page) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 18 This paper size is applicable to China National Standard (CNS) A4 (210 X 297 mm) 558434 5. Description of the invention ( l9) [Simplified description of the diagrams] Figures Figures Figures are the implementation architecture of the first embodiment of the electronic auscultation device Figure 1 is the implementation architecture of the second embodiment of the electronic auscultation device of the present invention Figure 1 is the present invention The first method of electronic auscultation device-implementation flowchart. Figure 4 is the implementation architecture of the third embodiment of the electronic auscultation device of the present invention. Figure 5 is the implementation architecture of the fourth embodiment of the electronic auscultation device of the present invention. Figure 6 is the implementation architecture of the fifth embodiment of the electronic auscultation device of the present invention. Seven is a second implementation flowchart of the electronic auscultation device method of the present invention. (Please read the notes on the back before filling this page)

Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs This paper is sized to the Chinese National Standard (CNS) A4 (210 X 297 mm) 19

Claims (1)

558434 Intellectual Property Bureau of the Ministry of Economic Affairs employee cooperative prints A8 B8 C8 D8, patent applicants 1. An electronic auscultation device, an A / D converter between a sound collector and a speaker to collect the sound The analog audio of the device is a digital signal; a controller receives the digital signal to accumulate a sound frame energy, and the remote controller determines whether the total energy of the sound frame reaches a set threshold and an output switch receives the analog Audio, and accept the control of the controller to open and close the analog audio to the speaker; wherein, the controller controls the output switch to output the analog audio according to whether the total energy of the audio frame reaches the set threshold Until the aforementioned vocalizer makes a sound. 2. The electronic auscultation device according to item 1 of the scope of patent application, wherein the sound collector is a microphone. x 3. According to the electronic auscultation device described in item 丨 of the patent application, Shang She: an amplification circuit connected to the signal output of the sound collector to amplify the analog audio; and a high-pass filter, The amplified analog audio filters out low-frequency components and outputs them to the aforementioned A / D converter. 4. The electronic auscultation device as described in item 1 of the scope of patent application, further comprising: an amplification circuit connected to the signal output terminal of the output switch for amplifying and outputting the analog audio to the aforementioned speaker. 5. As for the electronic auscultation device described in item 1 of the scope of patent application, there is still a package: This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) (Please read the precautions on the back before filling in this page) 558434 VI. Scope of patent application A plurality of frequency band filters 'are used to filter the sound of different frequency bands in the analog audio of the sound collector. # Office · 摞 m take a frequency band selector' to select the signal input end. The "Ear" number is transmitted to the output switch including: 6. The electronic auscultation device described in the scope of the patent application, which still has a storage device, is connected to the aforementioned controller to record the digitalized f ## 枓 '_ Calculate the delay of the predetermined sound box length based on the system 11 ... Based on the judgment of whether the sound is played and the attenuation of the noise-the wireless transmission interface can be a radio wave or infrared transmission component, and the analog audio wireless transmission wheel that outputs the aforementioned switch out When you go out, the wireless receiver can play the received signal.… 7 · As described in the electronic auscultation device described in the second page of the scope of patent application, the set threshold is a one or two stage energy threshold. 8. If the scope of patent application In the electronic auscultation device described in item 7, the second-stage energy threshold includes a first-energy threshold and a second-energy threshold, and the first-energy threshold is greater than the second-energy threshold. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs, 9. The electronic auscultation device according to item 8 of the scope of patent application, wherein the controller uses the first energy threshold to identify the start of the noise, and the second The threshold of the noise is discriminated from the noise threshold. Brother 10. As described in the electronic auscultation device described in item 9 of the patent scope, the controller judges that when the total energy of the aforementioned sound box exceeds the _ energy threshold, the controller controls the output. The switch is turned off, so that the aforementioned speaker is muted. Month U. The electronic auscultation device described in item 10 of the scope of patent application, in which the paper size applies the Chinese National Standard (CNS) A4 specification Q Q 297 Public Love 558434 6. Application The foregoing scope of the patent control judges that the total energy of the aforementioned sound frame is low = :: __ open, and this-two ^ reads the total energy of the aforementioned sound frame as a follow-up diagnosis device, where = · the electronic auscultation device described in item 12 of the scope of patent application The energy of the frame is the value accumulated by the aforementioned controller sampling the aforementioned facial audio and converted by the A / D converter within a preset time. ', A kind of electronic auscultation device', a sound collector and a speaker Data = converter 'An analog audio conversion line for the sound collector-controller' receives the aforementioned digital audio, accumulates-the sound frame energy, and the controller judges the aforementioned sound frame Whether the energy reaches a set threshold value; a frequency band selector connected to the signal input terminal of the controller; and-a D / A converter connected to the signal output terminal of the aforementioned controller to turn the controller out The digital audio is converted into an analog signal, and the analog signal is transmitted to the aforementioned speaker for sound;-wherein, the controller is based on whether the total energy of the aforementioned sound frame reaches the set threshold and is determined based on the rotation of the band selector Output the above-mentioned digital audio signals in different frequency bands to the aforementioned D / A converter. 15. The electronic auscultation device as described in item 14 of the scope of the patent application, wherein the sound collector is a microphone. 16. If the scope of the patent application is claimed The electronic auscultation device described in item 14 further includes:-an amplifying circuit 'connected to the signal output terminal of the sound collector for the application of the Chinese National Standard (CNS) A4 Regulation_Grid (210 X 297) 558434 A8 B8 C8 558434 C8 -------D8 VI. Application scope of patent 23 · The electronic auscultation device described in item 22 of the scope of patent application, where the controller determines that the total energy of the aforementioned sound frame exceeds the first energy threshold, the aforementioned The controller controls to mute the aforementioned speakers. 24. The electronic auscultation device according to item 23 of the scope of patent application, wherein when the description controller determines that the total energy of the sound frame is lower than the second energy threshold, the foregoing controller determines the foregoing according to the rotation decision of the frequency band selector. Digital audio signals in different frequency bands are output to the aforementioned D / A converter. 25. The electronic auscultation device according to item 14 of the scope of patent application, wherein the total energy of the aforementioned sound frame is the accumulation of the energy of a plurality of sound frames. 26. The electronic auscultation device according to item 25 of the scope of patent application, wherein the energy of the sound box is a value accumulated by the aforementioned controller sampling the aforementioned analog audio through the A / D converter within a preset time. 27. An electronic auscultation device comprising between a sound collector and a speaker: a first channel processor for converting two frequency components of the analog audio of the sound collector into a high-frequency digital audio; The second channel processor is used to select the audio signals of different frequency bands of the analog audio to convert into a selected frequency band digital audio. A controller receives the high frequency digital audio and the selected frequency digital audio, and based on the high frequency digital The audio accumulates the energy of the sound box, and the control is to determine whether the total energy of the sound box reaches a set threshold value, based on which to determine whether digital audio of the selected frequency band is output; and a D / A converter is connected to the signal of the controller The output end is used for converting the digital audio of the selected frequency band output by the controller into an analog signal, and transmitting the analog signal to the aforementioned speaker for sound. This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) (Please read the precautions on the back before filling this page) --------- Line! Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs Sixth, the scope of the patent application: The printed content of the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs ... = · The electronic auscultation device described in item 27 of the scope of patent application, where: the first channel processor contains a high-pass filter, A / D converter is used to filter out the low-frequency components of analog =; and the A / D converter turns the ^ number of the high-pass filter into digits and converts the aforementioned high-frequency digital audio. 29. The electronic auscultation device according to item 27 in the scope of the patent application, wherein the second channel is provided with a plurality of band filters for filtering: sound signals of different frequency bands; a band selector for selecting The waveband of different frequency bands-come and go through this analog audio; and, -A / D converter, m Hai frequency τ inverse selection a, digitally convert the signal output from the waveband to the aforementioned selected frequency band Digital audio. A 3〇. According to the electronic auscultation device described in item 27 of the scope of the patent application, it still contains ^ 4 and stores αβ, which is connected to the other controller to record the digitally processed sound data. The sound frame energy of the sound data is used as the basis for whether the sound is played or not. 31. A method for auscultation of stems, including the following steps: digitizing an analog audio; using a sound box as a unit, calculating the energy of the audio frame of the aforementioned digital analog audio; setting an energy threshold to judge whether the total energy of the audio frame is The energy threshold is reached; and whether the analog audio is output to a speaker for sound is determined based on whether the total energy of the sound frame reaches the set threshold value. 32. According to the electronic auscultation method described in item 31 of the scope of patent application, the following steps still need to be performed. Set the threshold value of 30% to the energy threshold of one or two stages. 297 public love) 26 ----------------- ^ -----— II (Please read the precautions on the back before filling out this page) ~ S434 Scope of patent application The first energy threshold and a second energy threshold are printed by the consumer cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs, and the first energy threshold is greater than the second energy threshold. * Person 33. According to the electronic auscultation method described in item 32 of the scope of the patent application, there are still 3 steps: the first energy threshold is used to identify the beginning of the noise, and the second energy threshold is used to identify the end of the noise. Person 34. According to the electronic auscultation method described in item 33 of the scope of patent application, the package still includes the following steps: when it is judged that the total energy of the sound frame exceeds the first energy threshold, control the mute the speaker. Person 35. According to the electronic auscultation method described in item 34 of the scope of patent application, the following steps are still included: when it is determined that the total energy of the aforementioned sound box is lower than the second energy threshold, the aforementioned analog audio is controlled to be output to a speaker for sound. Person 36. According to the electronic auscultation method described in item 35 of the scope of patent application, the method further includes the following steps: according to the input of a frequency band selector, outputting a different frequency band signal of the aforementioned analog audio to a speaker for sound. 37. An electronic auscultation method, including the following steps: digitizing an analog audio; using the sound frame as a unit, calculating the sound frame energy of the high frequency component of the aforementioned digital analog audio; setting an energy threshold to judge based on Whether the total energy of the sound frame reaches the energy threshold; and, determining whether the digitalized analog audio is restored to the analog audio and output to a speaker according to whether the total energy of the sound frame reaches the set threshold.口 ° 38 · —An electronic auscultation method, including the following steps: Digitizing the high-frequency component of an analog audio into a high-frequency digital audio; This paper is suitable for financial purposes_National Standard (CNS) A4 Specification (210 X 297 public review " (Please read the notes on the back before filling this page) The scope of the patent application is digitized. This analogy goes to, for example, the conversion of the different frequency band components of the Digital Lixun · XiXun into a selected frequency band, and the unit of t is to calculate the sound frame energy of the aforementioned high-frequency digital audio; Determine whether the total energy of the sound frame reaches this threshold; and determine the sound of the front speaker according to the threshold value of the digital sound of the selected frequency band in the sound frame.% The original is-output depends on the audio rotation to ----- ------------------ Order --------- line (please read the notes on the back before filling out this page) Employee Consumer Cooperatives, Intellectual Property Bureau, Ministry of Economic Affairs Printing 7R This paper size is applicable to China National Standard (CNS) A4 (210 X 297 mm)