Method and apparatus for providing information for laryngeal disease diagnosis

Abstract

A method for providing information for laryngeal disease diagnosis according to an embodiment of the present disclosure may comprise the steps of: acquiring information on a diagnostic phrase uttered by a subject; and extracting information on a laryngeal disease of the subject on the basis of the information on the diagnostic phrase. The diagnostic phrase may include one syllable or two or more different syllables in which each syllable includes one consonant and one vowel, wherein: for each syllable, each consonant is selected from among a fricative sound and a nasal sound produced at the palate or the larynx; and the vowel is selected from among a vowel in which a first formant is located in the highest frequency band, a vowel in which a second formant is located in the highest frequency band, and a vowel in which an average of the frequency band of the first formant and the frequency band of the second formant is located in the lowest frequency band.

Description

Method and device for providing information for diagnosing laryngeal diseases

[0001] The present disclosure relates to a method and device for providing information for diagnosing laryngeal diseases. Specifically, the present disclosure relates to a method and device for providing information about a subject's laryngeal disease through information about diagnostic phrases pronounced by the subject.

[0002] Various methods are being discussed to diagnose laryngeal diseases. Diagnosing laryngeal diseases through voice analysis is also being discussed (see Patent Document 1).

[0003] (Patent Document 1) [Patent Document 1] Korean Patent Publication No. 10-2003-0031076

[0004] Various embodiments of the present disclosure propose a method of providing diagnostic information on laryngeal diseases by predetermining phrases for diagnosing laryngeal diseases and analyzing the pronunciation of the phrases by a target patient.

[0005] A method for providing information for diagnosing a laryngeal disease according to one embodiment of the present disclosure may include a step of obtaining information on a diagnostic phrase pronounced by a subject of measurement; and a step of extracting information on a laryngeal disease of the subject of measurement based on the information on the diagnostic phrase.

[0006] An information providing device for diagnosing a laryngeal disease according to one embodiment of the present disclosure may include a voice input unit or a communication unit that obtains information on a diagnostic phrase pronounced by a measurement subject; and a control unit that extracts information on a laryngeal disease of the measurement subject based on the information on the diagnostic phrase.

[0007] A computer-readable storage medium recording a program for providing information for diagnosing a laryngeal disease according to one embodiment of the present disclosure may include an operation of the program for obtaining information on a diagnostic phrase pronounced by a subject of measurement; and an operation of extracting information on a laryngeal disease of the subject of measurement based on the information on the diagnostic phrase.

[0008] According to various embodiments of the present disclosure, information about a patient's laryngeal disease can be provided through analysis of diagnostic phrases pronounced by the patient.

[0009] According to various embodiments of the present disclosure, information on a patient's laryngeal disease can be provided by additionally considering the patient's lifestyle, environment, medical history, etc.

[0010] Figure 1 shows the configuration of an information providing device according to one embodiment of the present disclosure.

[0011] Figure 2 shows a graph showing the first and second tone frequencies of each vowel.

[0012] Figure 3 shows an example of a spectrogram that can be observed when a single vowel is uttered for a long time.

[0013] FIG. 4 illustrates a flowchart of a method for providing information for diagnosing laryngeal diseases according to one embodiment of the present disclosure.

[0014] Hereinafter, some embodiments of the present disclosure will be described in detail with reference to exemplary drawings. When adding reference numerals to components in each drawing, identical components may have the same numerals as much as possible even if they are shown in different drawings. In addition, when describing the present embodiments, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the technical idea of ​​the present invention, the detailed description may be omitted. When "includes," "has," "consists of," etc. are used in this specification, other parts may be added unless "only" is used. When a component is expressed in the singular, it may include a plural unless there is a special explicit description.

[0015] Additionally, terms such as first, second, A, B, (a), (b), etc. may be used to describe components of the present disclosure. These terms are only intended to distinguish the components from other components, and the nature, order, sequence, or number of the components are not limited by the terms.

[0016] In a description of the positional relationship of components, when it is described that two or more components are "connected," "combined," or "connected," it should be understood that the two or more components may be directly "connected," "combined," or "connected," but that the two or more components may also be further "interposed" with another component to be "connected," "combined," or "connected." Here, the other component may be included in one or more of the two or more components that are "connected," "combined," or "connected" to each other.

[0017] In the description of the temporal flow relationship related to components, operation methods, or manufacturing methods, for example, when the temporal or flow relationship is described as “after”, “following”, “next to”, “before”, etc., it may also include cases where it is not continuous, unless “immediately” or “directly” is used.

[0018] Meanwhile, when numerical values ​​or corresponding information for components are mentioned, even without separate explicit description, the numerical values ​​or corresponding information may be interpreted as including an error range that may occur due to various factors.

[0019] In various embodiments of the present disclosure, the Korean consonants 'ㄴ', 'ㅁ', 'ㅇ', and 'ㅎ' may be replaced with the English consonants 'n', 'm', 'no consonant', and 'h', respectively. In various embodiments of the present disclosure, the Korean vowels 'ㅣ', 'ㅜ', and 'ㅏ' may be replaced with the English vowels 'i', 'u', and 'a', respectively.

[0020] Figure 1 shows the configuration of an information providing device according to one embodiment of the present disclosure.

[0021] In the embodiment of Fig. 1, the information providing device includes a voice input unit (110), a control unit (120), a display unit (130), a communication unit (140), and a storage unit (150).

[0022] The voice input unit (110) can detect the voice spoken by the target patient. The voice input unit (110) may correspond to, for example, the microphone of a mobile phone (smartphone) or the microphone of a voice examination room. The input unit (110) may also correspond to a bone conduction microphone. When a bone conduction microphone is used alone or in conjunction with a general microphone, noise removal becomes easier.

[0023] The control unit (120) performs the overall control functions of the information providing device. The control unit (120) may be, for example, a processor (CPU or GPU) or an engine. In various embodiments of the present disclosure, the control unit (120) may be located in an external device (e.g., a server). The control unit (120) may perform various operations of the information providing device using programs and data stored in the storage unit (150).

[0024] The display unit (130) can display various contents using the user interface and / or graphical user interface stored in the storage unit (150) under the control of the control unit (120). Here, the contents displayed on the display unit (130) can include various text or image data (including various information data) and a menu screen including data such as icons, list menus, and combo boxes. In addition, the display unit (130) can be a touch screen.

[0025] The display unit (130) may include at least one of a liquid crystal display (LCD), a thin film transistor-liquid crystal display (TFT LCD), an organic light-emitting diode (OLED), a flexible display, a 3D display, and an e-ink display.

[0026] The communication unit (140) can communicate with any internal component or at least one external device through a wired / wireless communication network. Here, wireless Internet technologies include Wireless LAN (WLAN), Digital Living Network Alliance (DLNA), Wireless Broadband (Wibro), World Interoperability for Microwave Access (Wimax), High Speed ​​Downlink Packet Access (HSUPA), High Speed ​​Uplink Packet Access (HSUPA), IEEE 802.16, Long Term Evolution (LTE), Long Term Evolution-Advanced (LTE-A), Wireless Mobile Broadband Service (WMBS), 5G mobile communication service, Bluetooth, Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra Wide Band (UWB), ZigBee, Near Field Communication (NFC), Ultra Sound Communication (USC), Visible Light Communication (VLC), and Wi-Fi. Wi-Fi, Wi-Fi Direct, LoRa (Long Range), etc. may be included, and the technology used in the communication unit (140) is not limited to those exemplified above. Meanwhile, wired communication technologies may include Power Line Communication (PLC), USB communication, Ethernet, serial communication, optical / coaxial cables, etc.

[0027] The storage unit (150) can store programs and data according to various embodiments of the present disclosure. That is, the storage unit (150) can store a plurality of application programs, data for operations, and commands that are run on the information providing device. At least some of the application programs can be downloaded from an external device via wireless communication. In addition, at least some of these application programs can be stored on the information providing device from the time of shipment.) to perform operations (or functions).

[0028] In addition, the storage unit (150) may include at least one storage medium among a Flash Memory Type, a Hard Disk Type, a Multimedia Card Micro Type, a card type memory (e.g., an SD or XD memory, etc.), a magnetic memory, a magnetic disk, an optical disk, a Random Access Memory (RAM), a Static Random Access Memory (SRAM), a Read-Only Memory (ROM), an Electrically Erasable Programmable Read-Only Memory (EEPROM), and a Programmable Read-Only Memory (PROM).

[0029] In various embodiments of the present disclosure, the information providing device may not include at least some of the components of FIG. 1, and may also include additional components not illustrated in FIG. 1. For example, the information providing device may further include a voice output unit. The voice output unit may correspond to at least one of a speaker, a buzzer, or a receiver.

[0030] In various embodiments of the present disclosure, an information providing device can extract information on a laryngeal disease based on a diagnostic phrase pronounced by a measurement subject. In various embodiments of the present disclosure, the predetermined consonant group may include 'ㅇ' and / or 'ㅎ'. 'ㅇ' and / or 'ㅎ' can well reflect the characteristics of the vocal cords, and, unlike other consonant pronunciations, can minimize noise and focus on the sound produced by the larynx. In various embodiments of the present disclosure, the predetermined consonant group may further include 'ㅁ' and / or 'ㄴ'. 'ㅁ' and / or 'ㄴ' can be utilized for comparison according to vocal habits.

[0031] The above diagnostic phrase may be two or more syllables using at least one consonant from a predetermined consonant group and at least two vowels from a predetermined vowel group. Here, the at least two vowels may be determined by considering the frequency emphasized when pronouncing the vowels. The formant represents the value of the vibration frequency (frequency) that each vowel has. The frequency of the vowel may be divided into the first formant determined by the height and position of the tongue root, i.e., the width of the oropharynx or oral cavity, and the second formant determined by the length of the oral cavity. When at least two vowels are used, the at least two vowels may be selected by making the frequency range emphasized in the first formant and the second formant as different as possible.

[0032] The above diagnostic phrase may be a single syllable consisting of one consonant from a predetermined consonant group and one vowel from a predetermined vowel group. The vowel may be a long vowel lasting longer than a certain amount of time (e.g., three seconds). The vowel may be the sound "a."

[0033] When only one vowel from a predetermined vowel group is used (when each syllable of the diagnostic phrase contains only one syllable), the subject's pronunciation of the diagnostic phrase can be divided into multiple time intervals and analyzed. At this time, information on the subject's laryngeal disease can be extracted based on the characteristics of at least two of the multiple time intervals. For example, when the length of the spoken diagnostic phrase is 3 seconds, it can be divided into the first second, the middle second, and the last second and analyzed.

[0034] Figure 2 shows a graph showing the first and second tone frequencies of each vowel.

[0035] In Figure 2, the vertical axis, the first pitch frequency (F1), represents the frequency corresponding to the first peak of the corresponding vowel. As the height of the tongue root increases and the width of the oropharynx widens, F1 generally decreases.

[0036] In Figure 2, the second pitch frequency (F2), which is the horizontal axis, represents the frequency corresponding to the second peak of the corresponding vowel. As the tongue root is positioned farther back and the oral cavity length increases, F2 generally decreases.

[0037] In various embodiments of the present disclosure, a diagnostic phrase for a laryngeal disease includes at least one vowel among 'a', 'i', and 'u' ('ㅏ', 'ㅣ', and 'ㅜ'). The 'a' sound is the easiest sound for a human to produce and requires the lowest tongue position. 'i' and 'u' are sounds in which the tongue is positioned at the top and the most forward and backward, respectively. Therefore, the first formant is generally lowest for the sounds 'i' and 'u', and highest for the sound 'a'. The second formant is generally highest for the sound 'i', and lowest for the sound 'u'. The 'a' sound is intermediate between 'i' and 'u'. Consequently, these three vowels are the vowels that are the farthest apart from each other in terms of the formant among the vowels produced by a human.

[0038] In various embodiments of the present disclosure, considering these characteristics, two syllables with different vowels (e.g., "ai," "ui," "au," "hahi," "huhi," "hahu") can be used to diagnose laryngeal diseases such as laryngeal cancer or laryngeal lesions by comparing the emphasized portions of each syllable. In various embodiments of the present disclosure, each combination of syllables can be used to diagnose different diseases. For example, when comparing the vowel changes in a case where the subject has a normal laryngeal condition, a diagnostic phrase such as "ai" or "au" can be uttered to determine whether the subject has laryngeal cancer. In this case, noise is generated severely or the perturbation increases significantly at a specific frequency. Here, the specific frequency may vary depending on the location of the cancer (e.g., the front part of the vocal cords or the middle part of the vocal cords). As another example, the subject may be asked to utter diagnostic phrases such as “hahi” or “huhi” to determine whether he or she has other vocal cord paralysis, in which case noise at a specific frequency will be amplified or the variability will increase significantly depending on the degree of paralysis.

[0039] Figure 3 shows an example of a spectrogram that can be observed when a single vowel is uttered for a long time.

[0040] Analyzing spectrograms, such as those in Figure 3, by selecting only the first second when pronunciation is most audible during vocalization is inconsistent and thus difficult to accurately reflect the characteristics of laryngeal diseases. Conversely, analyzing the first second, middle second, and last second together allows for a more accurate analysis. For example, if changes are most prominent in the first second and also observed in the middle second, it can be determined to correspond to benign vocal cord disease and glottic cancer. Alternatively, if changes are most prominent in the last second and also observed in the middle second, it can be determined to correspond to vocal cord paralysis.

[0041] FIG. 4 illustrates a flowchart of a method for providing information for diagnosing laryngeal diseases according to one embodiment of the present disclosure.

[0042] The voice input unit (110) of the information providing device first obtains information about the diagnostic phrase pronounced by the measurement subject (S410). This may be replaced by an operation in which the communication unit (140) of the information providing device receives information about the diagnostic phrase obtained from another device. The other device may store a file of the diagnostic phrase recorded by the measurement subject and transmit it to the communication unit (140) via wired / wireless communication.

[0043] The control unit (120) of the information providing device can extract information on the laryngeal disease of the subject of measurement based on information on the diagnostic phrase (S420). Here, the diagnostic phrase may include two or more different syllables, each syllable consisting of one consonant and one vowel. Alternatively, the diagnostic phrase may include only one syllable, each syllable consisting of one consonant and one vowel. In either case, the consonant may be selected from among fricatives or nasal sounds produced in the palate or throat for each syllable. The information on the laryngeal disease of the subject of measurement may include information on what laryngeal disease the subject of measurement has and / or the degree (level) of the disease.

[0044] The above vowel may be selected from among a vowel in which the first sound band is located in the highest frequency band (e.g., 'ㅏ'), a vowel in which the second sound band is located in the highest frequency band (e.g., 'ㅣ'), and a vowel in which the average of the frequency bands of the first sound band and the second sound band is located in the lowest frequency band (e.g., 'ㅜ').

[0045] In various embodiments of the present disclosure, the information about the diagnostic phrase may include voice data about the diagnostic phrase pronounced by the measurement subject, and may further include other data.

[0046] In various embodiments of the present disclosure, when each syllable of the diagnostic phrase includes two or more different syllables, information about the diagnostic phrase may include at least one of a speed of transition from a first syllable to a second syllable, a normal to noise ratio of the first syllable and the second syllable, and a fundamental frequency distortion of the first syllable and the second syllable.

[0047] For example, if the speed of transition from the first syllable to the second syllable is slower than a first predetermined reference value, and the value obtained by subtracting the normal ratio of the first syllable to noise from the normal ratio of the second syllable is greater than a second predetermined reference value, and the fundamental frequency distortion of the first syllable and the second syllable is greater than a third predetermined reference value, then the first disease may be determined. Alternatively, if the speed of transition from the first syllable to the second syllable is faster than a fourth predetermined reference value, and the value obtained by subtracting the normal ratio of the first syllable to noise from the normal ratio of the second syllable is greater than a fifth predetermined reference value, then the second disease may be determined. Alternatively, if the speed of transition from the first syllable to the second syllable is faster than a sixth predetermined reference value, and the normal ratio of the first syllable to noise and the normal ratio of the second syllable are each greater than a seventh predetermined reference value, then the third disease may be determined.

[0048] In S420, extracting information about the subject's laryngeal disease based on the information about the diagnostic phrase can be done by additionally considering other factors of the subject. For example, different criteria can be applied based on gender. This may include using different AI models specifically for male and female voices. As another example, factors such as the subject's previous surgery history, smoking history, and duration of voice abnormality can be further considered. By considering these additional factors, the accuracy of information about the subject's laryngeal disease can be further improved.

[0049] In various embodiments of the present disclosure, laryngeal diseases may be classified into four types: normal, laryngeal cancer, benign laryngeal disease, and laryngeal paralysis. These are examples, and laryngeal diseases may further include acute laryngitis, laryngopharyngeal dysphonia, muscle tension dysphonia, and / or spasmodic dysphonia.

[0050] The various embodiments of this document and the terminology used therein are not intended to limit the technical features described in this document to specific embodiments, but should be understood to include various modifications, equivalents, or substitutes of the embodiments. In connection with the description of the drawings, similar reference numerals may be used for similar or related components. The singular form of a noun corresponding to an item may include one or more of the items, unless the context clearly indicates otherwise. In this document, each of the phrases "A or B", "at least one of A and B", "at least one of A or B", "A, B, or C", "at least one of A, B, and C", and "at least one of A, B, or C" can include any one of the items listed together in the corresponding phrase among those phrases, or all possible combinations thereof. Terms such as "first," "second," or "first" or "second" may be used merely to distinguish one component from another, and do not limit the components in any other respect (e.g., importance or order). When a component (e.g., a first component) is referred to as "coupled" or "connected" to another component (e.g., a second component), with or without the terms "functionally" or "communicatively," it means that the component can be connected to the other component directly (e.g., wired), wirelessly, or through a third component.

[0051] The term "unit" used in various embodiments of this document may include a unit implemented in hardware, software, or firmware, and may be used interchangeably with terms such as logic, logic block, component, or circuit. The "unit" may be an integral component, or a minimum unit or part of the component that performs one or more functions. For example, according to one embodiment, the "unit" may be implemented in the form of an application-specific integrated circuit (ASIC).

[0052] Various embodiments of this document may be implemented as software (program) including one or more instructions stored in a storage medium (e.g., built-in memory or external memory) readable by a machine (e.g., a display device). For example, a processor of the machine (e.g., a display device) may call at least one instruction among the one or more instructions stored from the storage medium and execute it. This enables the machine to operate to perform at least one function according to the at least one instruction called. The one or more instructions may include code generated by a compiler or code executable by an interpreter. The machine-readable storage medium may be provided in the form of a non-transitory storage medium. Here, 'non-transitory' only means that the storage medium is a tangible device and does not contain a signal (e.g., electromagnetic waves), and this term does not distinguish between cases where data is stored semi-permanently and cases where it is stored temporarily in the storage medium.

[0053] According to one embodiment, the method according to various embodiments disclosed in this document may be provided as a computer program product. The computer program product may be traded between sellers and buyers as a product. The computer program product may be distributed in the form of a device-readable storage medium (e.g., compact disc read-only memory (CD-ROM)) or may be provided through an application store (e.g., Play Store). TM ) or directly between two user devices (e.g., smart phones), online distribution (e.g., downloading or uploading). In the case of online distribution, at least a portion of the computer program product may be at least temporarily stored or temporarily created in a machine-readable storage medium, such as the memory of a manufacturer's server, an application store's server, or an intermediary server.

[0054] According to various embodiments, each component (e.g., a module or a program) of the above-described components may include one or more entities, and some of the entities may be separated and placed in other components. According to various embodiments, one or more components or operations of the aforementioned components may be omitted, or one or more other components or operations may be added. Alternatively or additionally, a plurality of components (e.g., a module or a program) may be integrated into a single component. In such a case, the integrated component may perform one or more functions of each of the plurality of components identically or similarly to those performed by the corresponding component among the plurality of components prior to the integration. According to various embodiments, the operations performed by a module, program, or other component may be executed sequentially, in parallel, iteratively, or heuristically, or one or more of the operations may be executed in a different order, omitted, or one or more other operations may be added.

[0055] The present invention has been described in detail, focusing on preferred embodiments. Those skilled in the art will appreciate that various embodiments of the present invention can be implemented in modified forms without departing from the essential characteristics thereof. Therefore, the disclosed embodiments should be considered illustrative rather than restrictive. The scope of the various embodiments of the present invention is set forth in the claims, not the foregoing description, and all differences within the scope equivalent thereto should be construed as being encompassed by the present invention.

[0056]

[0057] CROSS-REFERENCE TO RELATED APPLICATION

[0058] This patent application claims priority under 35 USC §119(a) to Korean Patent Application No. 10-2024-0026000, filed in Korea on February 22, 2024, the entire contents of which are incorporated herein by reference. This patent application also claims priority in countries other than the United States for the same reasons, the entire contents of which are incorporated herein by reference.

Claims

1. In a method for providing information for diagnosing laryngeal diseases, A step of obtaining information about diagnostic phrases pronounced by the measurement subject; and A step of extracting information on a laryngeal disease of the measurement subject based on information on the diagnostic phrase, The above diagnostic phrase contains one syllable or two or more different syllables, each syllable consisting of one consonant and one vowel, The above consonants are selected from among the fricatives or nasals produced by the palate or throat for each syllable, A method for providing information for diagnosing a laryngeal disease, wherein the above vowel is selected from among a vowel in which the first sound band is located in the highest frequency band, a vowel in which the second sound band is located in the highest frequency band, and a vowel in which the average of the frequency bands of the first sound band and the second sound band is located in the lowest frequency band.

2. In claim 1, if each syllable of the diagnostic phrase includes two or more different syllables, the information about the diagnostic phrase is: A method for providing information for diagnosing a laryngeal disease, comprising at least one of the following: the speed of transition from the first syllable to the second syllable, the normal ratio of the noise ratio of the first syllable and the second syllable, and the fundamental frequency distortion of the first syllable and the second syllable.

3. In claim 1, if each syllable of the diagnostic phrase includes two or more different syllables, the step of extracting information about the laryngeal disease of the measurement subject based on information about the diagnostic phrase is, A method for providing information for diagnosing a laryngeal disease, comprising a step of determining a first disease if the speed of transition from the first syllable to the second syllable is slower than a first predetermined reference value, the value obtained by subtracting the normal ratio of the first syllable to the normal ratio of the second syllable from the normal ratio of the noise ratio of the second syllable is greater than a second predetermined reference value, and the fundamental frequency distortion of the first syllable and the second syllable is greater than a third predetermined reference value.

4. In claim 1, if each syllable of the diagnostic phrase includes two or more different syllables, the step of extracting information on the laryngeal disease of the measurement subject based on information on the diagnostic phrase includes: A method for providing information for diagnosing a laryngeal disease, comprising a step of determining a second disease if the speed of transition from the first syllable to the second syllable is faster than a predetermined fourth reference value and the value obtained by subtracting the normal ratio of the first syllable to the normal ratio of the second syllable to the noise is greater than a predetermined fifth reference value.

5. In claim 1, if each syllable of the diagnostic phrase includes two or more different syllables, the step of extracting information on the laryngeal disease of the measurement subject based on information on the diagnostic phrase is, A method for providing information for diagnosing a laryngeal disease, comprising a step of determining a third disease if the speed of transition from the first syllable to the second syllable is faster than a predetermined sixth reference value, and the noise-to-normal ratio of the first syllable and the noise-to-normal ratio of the second syllable are each greater than a predetermined seventh reference value.

6. In claim 1, if each syllable of the diagnostic phrase contains only one syllable, the step of extracting information on the laryngeal disease of the measurement subject based on information on the diagnostic phrase is, A method for providing information for diagnosing a laryngeal disease, comprising the step of dividing a diagnostic phrase pronounced by the subject of measurement into a plurality of time intervals and extracting information on a laryngeal disease of the subject of measurement based on characteristics of at least two time intervals among the plurality of time intervals.

7. In a device providing information for diagnosing laryngeal diseases, A voice input unit or communication unit that obtains information about diagnostic phrases pronounced by the measurement subject; and A control unit for extracting information on a laryngeal disease of the measurement subject based on information on the diagnostic phrase, The above diagnostic phrase contains one syllable or two or more different syllables, each syllable consisting of one consonant and one vowel, The above consonants are selected from among the fricatives or nasals produced by the palate or throat for each syllable, An information providing device for diagnosing laryngeal diseases, wherein the above vowel is selected from among a vowel in which the first sound band is located in the highest frequency band, a vowel in which the second sound band is located in the highest frequency band, and a vowel in which the average of the frequency bands of the first sound band and the second sound band is located in the lowest frequency band.

8. In claim 7, if each syllable of the diagnostic phrase includes two or more different syllables, the information about the diagnostic phrase is: An information providing device for diagnosing laryngeal diseases, comprising at least one of the following: the speed of transition from the first syllable to the second syllable, the normal ratio of the noise ratio of the first syllable and the second syllable, and the fundamental frequency distortion of the first syllable and the second syllable.

9. In claim 7, the control unit, if each syllable of the diagnostic phrase includes two or more different syllables, An information providing device for diagnosing a laryngeal disease, wherein the first disease is determined when the speed of transition from the first syllable to the second syllable is slower than a first predetermined reference value, the value obtained by subtracting the normal ratio of the first syllable to the normal ratio of the second syllable from the normal ratio of the second syllable is greater than a second predetermined reference value, and the fundamental frequency distortion of the first syllable and the second syllable is greater than a third predetermined reference value.

10. In claim 7, the control unit, if each syllable of the diagnostic phrase includes two or more different syllables, An information providing device for diagnosing a laryngeal disease, wherein if the speed of transition from the first syllable to the second syllable is faster than a predetermined fourth reference value, and the value obtained by subtracting the normal ratio of the first syllable to the normal ratio of the second syllable from the normal ratio of the second syllable is greater than a predetermined fifth reference value, the second disease is determined to be present.

11. In claim 7, if each syllable of the diagnostic phrase includes two or more different syllables, An information providing device for diagnosing a laryngeal disease, wherein if the speed of transition from the first syllable to the second syllable is faster than a predetermined sixth reference value, and the normal ratio of the noise ratio of the first syllable and the normal ratio of the noise ratio of the second syllable are each greater than a predetermined seventh reference value, the third disease is determined.

12. In claim 7, the control unit, if each syllable of the diagnostic phrase contains only one syllable, An information providing device for diagnosing laryngeal disease, which divides diagnostic phrases pronounced by the subject of measurement into a plurality of time intervals and extracts information on the subject of measurement's laryngeal disease based on characteristics of at least two of the plurality of time intervals.

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