239results about "Contact microphone transducers" patented technology

Various methods and systems are provided for an automated clinical exam workflow. In one example, method comprises performing a signal quality check of an electronic stethoscope at a first recording location on a subject, recording physiological data for an exam at the first recording location via the electronic stethoscope in response to the signal quality check satisfying a quality threshold, and outputting a signal quality alert in response to the signal quality check not satisfying the quality threshold. In this way, clinically relevant data may be obtained with reduced user effort and fewer manual inputs.

The present disclosure is of a bone conduction microphone. The bone conduction microphone comprises of a laminated structure and a base structure. The laminated structure is formed by a vibration unit and an acoustic transducer unit. The base structure is configured to load the laminated structure. At least one side of the laminated structure is physically connected to the base structure. The base structure vibrates based on an external vibration signal, the vibration unit deforms in response to the vibration of the base structure, and the acoustic transducer unit generates an electrical signal based on the deformation of the vibration unit. A resonant frequency of the bone conduction microphone is within a range of 2.5 kHz-4.5 KHz.

A rear panel, which is an external member, includes a frame portion including multiple sound radiation holes including a first sound radiation hole, a second sound radiation hole, and a third sound radiation hole. A first sloping portion is disposed within an area of the first sound radiation hole and is inclined with respect to a thickness direction of the frame portion towards a first direction non-parallel to the thickness direction, and a second sloping portion is disposed within an area of the second sound radiation hole and is inclined with respect to the thickness direction of the frame portion towards a second direction different from the first direction and non-parallel to the thickness direction, and the third sound radiation hole includes a surface parallel to the thickness direction of the frame portion.

An acoustic sensor includes a piezoelectric plate including a conductor plate with first and second surfaces, and a piezoelectric element on the second surface, a cover facing the first surface of the conductor plate, a support substrate facing the second surface of the conductor plate and the piezoelectric element, a first connector including a conductor between the piezoelectric element and the support substrate and electrically connecting the piezoelectric element and the support substrate, a first insulating structure including an insulator between the second surface of the conductor plate and the support substrate at an outer edge of the second surface of the conductor plate, and a second connector including a conductor on an outer edge of the first surface of the conductor plate and electrically connecting the conductor plate and the cover.

A vibration sensor (200) is provided, comprising: a vibration receiver (210) including a housing (211) and a vibration unit (212), the housing (211) forming an acoustic cavity, the vibration unit (212) being located in the acoustic cavity and separating the acoustic cavity into a first acoustic cavity (213) and a second acoustic cavity (214); and an acoustic transducer (220) acoustically connected to the first acoustic cavity (213). The housing (211) is configured to generate a vibration based on an external vibration signal, the vibration unit (212) changes an acoustic pressure within the first acoustic cavity (213) in response to the vibration of the housing (211), causing the acoustic transducer (220) to generate an electrical signal. The vibration unit (212) includes a quality element (2121) and an elastic element (2122), an area of the quality element (2121) on a side away from the acoustic transducer (220) is smaller than an area of the quality element (2121) on a side close to the acoustic transducer. The elastic element (2122) is connected around a side wall of the quality element (2121).

Discloses herein is an electronic stethoscope, including a connector, wherein a membrane type auscultation head is in threaded connection with one end of the connector, a piezoelectric sheet is fixedly mounted in the membrane type auscultation head, a grip is in threaded connection with the other end of the connector, a circuit board is clamped in the grip, the circuit board is electrically connected to the membrane type auscultation head, a storage battery is electrically connected to one side of the circuit board, the storage battery is clamped in the grip, a microswitch and a loudspeaker are mounted on the other side of the circuit board in an electrically connected manner, a main silicone key body is clamped in the grip, and the main silicone key body is attached to the microswitch.

A health diagnostic system and a method for analyzing health of an animal. The system includes a signal receiver module arranged to receive a record of sound generated by an organ in a body of an animal when the organ performs a predetermined function for a predetermined period; a signal denoising module arranged to reduce a noise signal in the record; and a health diagnostic analyzing module arranged to analyze a health issue of the animal based on normal sounds generated by the organ and adventitious sounds in the denoised record.

Vibration sensors are provided. The vibration sensor may include: a vibration assembly, the vibration assembly including a mass element and an elastic element, and the mass element being connected to the elastic element; a first acoustic cavity, the elastic element constituting one of sidewalls of the first acoustic cavity, and the vibration assembly vibrating to make a volume of the first acoustic cavity change in response to an external vibration signal; an acoustic transducer, the acoustic transducer being in communication with the first acoustic cavity and the acoustic transducer generating an electrical signal in response to a volume change of the first acoustic cavity; and a buffer, the buffer limiting a vibration amplitude of the vibration assembly, wherein the acoustic transducer has a first resonance frequency, the vibration assembly has a second resonance frequency, and the second resonance frequency of the vibration assembly is smaller than the first resonance frequency.

The present invention provides a polymer-based piezoelectric composite material from which a piezoelectric film capable of outputting a higher sound pressure and exhibiting excellent flexibility even in a low-temperature environment is obtained in a case of using a piezoelectric speaker, a piezoelectric film formed of the polymer-based piezoelectric composite material, and a piezoelectric speaker and a flexible display which are formed of the piezoelectric film. The polymer-based piezoelectric composite material of the present invention is a polymer-based piezoelectric composite material including a polymer matrix which contains a polymer containing a group represented by Formula (1), and piezoelectric particles.*-L1-(CR1R2)n—CN  Formula (1)In Formula (1), L1 represents a divalent linking group excluding a urethane group. R1 and R2 each independently represent a hydrogen atom, an alkyl group, or an aryl group. n represents an integer of 3 or greater. * represents a bonding position with respect to the main chain of a polymer.

A method and apparatus for monitoring vehicle window vibrations for voice command recognition are disclosed. An exemplary vehicle includes a vehicle window; an exterior panel; a vibration sensor coupled to the vehicle window to detect audio vibrations; an audio actuator coupled to the exterior panel to vibrate the exterior panel; and a controller. The controller is configured to detect a voice command from a user via the vibration sensor, identify an audio response based on the voice command, and transmit the audio response to the user via the audio actuator.

An abnormal noise reproduction device and an abnormal noise reproduction method thereof are provided in the disclosure. The abnormal noise reproduction device includes at least one measuring device, an analysis device, and a vibration device. The at least one measuring device includes a contact microphone and an accelerometer. The contact microphone is disposed on the abnormal noise generating part of a vehicle, senses vibration sound of the abnormal noise generating part, and generates a vibration sound signal. An acceleration signal is generated by synchronously sensing acceleration of the contact microphone over a time sequence through the accelerometer. The analysis device determines when the abnormal noise generating part produces abnormal noise according to the vibration sound signal. The vibration device applies vibration to the vehicle and reproduces the acceleration signal corresponding to the abnormal noise.

Systems and techniques are provided for detecting bone-conducted sound. A voice accelerometer can include a substrate and a plurality of sensing elements associated with a plurality of frequency bands. Each frequency band can be associated with one or more sensing elements of the plurality of sensing elements having a respective resonance frequency within the frequency band. The voice accelerometer can include a back cavity enclosed by the plurality of sensing elements and the substrate. Each respective sensing element of the plurality of sensing elements can be configured to vibrate in response to a first force corresponding to a bone-conducted sound wave coupled into the voice accelerometer, and a second force corresponding to a back cavity pressure coupling between the plurality of sensing elements, the back cavity pressure coupling based on respective vibration of each sensing element of the plurality of sensing elements.

The acoustic transducer includes a first layer including an elastomer. The acoustic impedance of the first layer substantially matches the acoustic impedance of a medium the transducer is configured to monitor. The transducer also includes a second layer including an electrode. The transducer also includes a third layer including a polymer. The second layer is at least partially positioned between the first and third layers.

A stethoscope head includes a shell, the shell including a first portion that is open on one side and contracted on the other side, and a second portion located on one side of the first portion, the shell being formed by integral metal stamping; a core member located inside the shell and including a fourth portion that closely fits the inner wall of the second portion of the shell; and a connector that is a hollow tube extending from the outside of the shell into the space in the middle of the core member, the space in the middle of the core member being connected to the sound pickup space of the stethoscope head. The stethoscope head using the above structure has a simple structure, is easy to manufacture, and is simple to assemble, and is particularly suitable for use as a disposable stethoscope head.

A bone conduction microphone is provided. The bone conduction microphone may include a laminated structure formed by a vibration unit and an acoustic transducer unit. The bone conduction microphone may include a base structure configured to carry the laminated structure. At least one side of the laminated structure may be physically connected to the base structure. The base structure may vibrate based on an external vibration signal. The vibration unit may be deformed in response to the vibration of the base structure. The acoustic transducer unit may generate an electrical signal based on the deformation of the vibration unit. The bone conduction microphone may include at least one damping structural layer. The at least one damping structural layer may be arranged on an upper surface, a lower surface, and / or an interior of the laminated structure, and the at least one damping layer may be connected to the base structure.

Systems and techniques are provided for detecting bone-conducted sound. A voice accelerometer can include a substrate and a plurality of sensing elements associated with a plurality of frequency bands. Each frequency band can be associated with one or more sensing elements of the plurality of sensing elements having a respective resonance frequency within the frequency band. The voice accelerometer can include a back cavity enclosed by the plurality of sensing elements and the substrate. Each respective sensing element of the plurality of sensing elements can be configured to vibrate in response to a first force corresponding to a bone-conducted sound wave coupled into the voice accelerometer, and a second force corresponding to a back cavity pressure coupling between the plurality of sensing elements, the back cavity pressure coupling based on respective vibration of each sensing element of the plurality of sensing elements.

The present invention relates to a wireless communication device for a neck microphone, comprising: a body 110, which has a communication terminal device and is placed on the rear part of the neck of a user; and a neck microphone 120, which is attachably / detachably provided on the body to come into close contact with the front part of the neck, and thus transmit voice sound through the vibration of the neck, wherein the center of gravity is at the back of the neck of the user because of the weight of the body. The present invention is manufactured in an integrated form of a neck microphone and a wireless communication terminal device, and thus enables communication while both hands are free even if fire is suppressed while the facepiece respirator is worn, or even if chemical protective clothing is worn.

A device for performing active auscultation.SOLUTION: A main body, a body mounting structure, and one or more wings, wherein the main body comprises a memory, a battery, an IMU, a transceiver, and a DSP; Wherein the one or more wings comprise a microphone wing and a speaker wing, wherein the microphone wing comprises one or more microphones, wherein the speaker wing comprises a speaker, wherein the one or more wings comprise a temperature sensor, wherein the main body is configured to engage with the body attachment structure, and wherein the body attachment structure is configured to engage with the main body on a first side and an animal body on a second side.SELECTED DRAWING: Figure 3A

An audio transmitter (8) for a guitar comprises an electrochemical energy storage device (13) for supplying the audio transmitter (8) with the electrical energy required for operation, a microphone (14) for converting the guitar sound into an electrical audio signal, a radio module (11) for transmitting the audio signal, and a mounting bracket (16.1) for attaching the audio transmitter (8) to an edge of a soundhole of the guitar such that the microphone (14) is located in the body of the guitar. Furthermore, an audio radio system (1) with such an audio transmitter (8) is included.

The utility model relates to a sound pickup technology for an acoustic musical instrument, in particular to an array type sound pickup for the acoustic musical instrument, which comprises an integral array type sound pickup set consisting of a plurality of single sound pickups with different sizes. The single sound pick-up is formed by arranging a piezoelectric ceramic piece in an open type stamping aluminum alloy cavity shell, and the surface of the piezoelectric ceramic piece is covered with 0.3-0.5 mm silicone rubber for sealing. The sound pick-up is installed on a frequency resonance point of a sound production panel in the original sound musical instrument through a flexible double faced adhesive tape. The sound pick-up frequency range and the signal intensity can be expanded in the physical level by combining sound pick-ups with different sizes. The sound pickup device picks up the sound of the acoustic musical instrument with high quality, and provides a high-quality acoustic solution for the acoustic musical instrument in the fields of stage performance, studio recording and the like.

The present disclosure provides communication systems and devices for use in noise environments, such as during magnetic resonance imaging (MRI). In some embodiments, a communication headrest is provided that consists of a headrest that supports a patients' head, an optional bone conduction microphone, and one or more vibration actuators. The headset makes contact with noise-isolating earplugs worn by the subject such that vibrations generated by the vibration actuators are transferred through the earplug, via acoustic conduction, to enable the patient to hear audio content while the earplugs provide passive noise protection by occluding the ear canal. In other embodiments, active earplug devices are provided in which an acoustic transducer is contacted and supported by a noise isolating earplug, such that when the earplug is inserted into the ear canal, the acoustic transducer is brought into acoustic conductive communication with tissue surrounding the ear canal, facilitating acoustic communication through bone conduction.

To provide means enabling a user of a stethoscope to appropriately apply the stethoscope to an object to be auscultated.SOLUTION: A stethoscope 1 includes two contact faces 3a, 3b, and two gimbal mechanisms 6A, 6B. The two gimbal mechanisms 6A, 6B can move the two contact faces 3a, 3b respectively independently. The contact faces 3a, 3b are unloaded and in a natural attitude. The gimbal mechanisms 6A, 6B tilt the contact faces 3a, 3b from the natural attitude according to a load to the contact faces 3a, 3b.SELECTED DRAWING: Figure 1

Embodiments described herein provide for a hardware-and-software solution that effectively repurposes a patient's earphone into microphone or stethoscope, allowing a specialist to remotely perform auscultation during a remote visit. The heartbeat signal is captured and augmented from a voltage signal produced by an audio-output earphone containing phonocardiogram (PCG) signals. Hardware and software components accentuate and correct the PCG signal of the electrical signal. A patient's client device sends a clear and corrected version of the PCG signal to a provider's client device to perform cardiac auscultation.

To provide an exterior member which can easily set a sound emission direction, a forming method of the exterior member and an electronic musical instrument.SOLUTION: A back panel 15 which is an exterior member includes: a frame part 110 having a plurality of sound emission holes 150 including first sound emission holes 160-1 and second sound emission holes 160-2; a first inclined part 160b in which a first inclined face 161a inclined from a thickness direction (Y-axis direction) of the frame part 110 is arranged in the frame part 110 toward a first direction 161c in an area of the first sound emission hole 160-1; and a second inclined part 162b in which a second inclined face 162a inclined from the thickness direction (Y-axis direction) of the frame part 110 is arranged in the frame part 110 toward a second direction 162c different from the first direction 161c in an area of the second sound emission hole 160-2.SELECTED DRAWING: Figure 3

An headphone is provided. The headphone includes a housing assembly, an interface assembly, and a wire assembly. The housing assembly includes a first housing, the first housing being provided with a receiving slot and an accommodation cavity in communication with the receiving slot; an interface assembly inserted within the receiving slot; a circuit board disposed within the accommodation cavity; and a wire assembly electrically connecting the circuit board and the interface assembly. In the manner disclosed above, a freedom of a mounting position and a mounting posture of the interface assembly may be improved, which facilitates the assembly of the headphone.

An electronic stethoscope includes a diaphragm that comes into contact with a living body, a sound sensor that receives vibration from the diaphragm and converts the vibration into an electric signal, and a tubular member that includes an inner wall surface to define an internal space. The tubular member includes a first inner wall surface that defines a first space, a second inner wall surface that defines a second space, and a boundary portion where the first inner wall surface is in contact with the second inner wall surface. A volume of the first space is larger than a volume of the second space. A cross-sectional area of a transverse section of the internal space is gradually decreased from a diaphragm side end toward the boundary portion in the first space and is gradually increased from the boundary portion toward a sound sensor side end in the second space.

Conventional portable information terminals have a problem that it is difficult to obtain high-quality recording results when recording abdominal sound with a portable information terminal. A portable information terminal (6) capable of obtaining a recording result of high-quality abdominal sound, which is provided with two or more microphones, is used when a sound collection unit in the vicinity of any one of the two or more microphones is brought into contact with the abdomen of a user to record the abdominal sound of the user, and is provided with: a determination unit (47) that determines whether or not the abdominal sound of the user is recorded; determining whether a predetermined control condition related to the recording of the abdominal sound is satisfied; and a microphone control unit (48) that controls one or more microphones among the two or more microphones when it is determined that the control condition has been satisfied.

The utility model discloses a stainless steel electric guitar convenient to drink water, which comprises a guitar body, a sound pick-up is arranged on the front surface of the guitar body, a connecting plate is arranged on the side surface of the guitar body, a water drinking mechanism is arranged in the connecting plate, a fixing mechanism is arranged on the upper surface of the guitar body, one end of the guitar body is fixedly connected with a finger plate, and the other end of the guitar body is fixedly connected with the finger plate. One end of the fingerboard is fixedly connected with a guitar head, the outer side wall of the guitar body is fixedly connected with a connecting column, the connecting column is fixedly connected with a limiting rope, and one end of the limiting rope is connected with the water drinking mechanism. According to the utility model, drinks can be carried in the cup, so that a player can drink water and supply water in time during playing. When drinking water needs to be carried, the limiting scribing piece is moved away, and the water storage tank can be taken out of the fixing groove by contacting limitation of the limiting scribing piece on the water storage tank. And then the sealing cover is taken down, and water is injected. And then the water storage tank is placed in the fixing groove, so that the water storage tank is fixed by the positioning sheet in the fixing groove. When water needs to be drunk, the water storage tank can be taken out for drinking.

Whistling / wheezing detection device (1) for detecting whistling / wheezing based on a sound measured from a living body while the whistling / wheezing detection device (1) is in contact with a body surface (S) of the living body, wherein the whistling / wheezing detection device (1) comprises the following: a noise measuring element (M1, M2); a space-forming element (30, 33, 34, 35, 350) that forms a recording space (SP1) which accommodates the noise measurement element (M1, M2); and a cover element (36) that forms a pressure receiving unit (3a) which closes the receiving chamber (SP1) and receives pressure from the body surface (S), wherein the space-forming element (30, 33, 34, 35, 350) has a hole section (40) that is connected to an atmosphere, the recording chamber (SP1) is connected to the atmosphere via the hole section (40), and the hole section (40) includes a branching section (BR1 to BR3) between an inlet (41) on one side of the receiving space (SP1) and an outlet (49) on one side of the atmosphere and two branched hole sections (44, 46) that branch off from one side of the inlet at the branching section (BR1 to BR3), one branched hole section (46) of the two branched hole sections (44, 46) is connected to the outlet (49) and the other branched hole section (44) of the two branched hole sections is closed.