Systems and methods for soothing infants

Abstract

A system includes a wearable device disposed on a person, the wearable device having a plurality of sensors, each sensor configured to output a sound waveform in response to sound generated by physiological activities of the person. The system also includes a processing device coupled to the plurality of sensors and configured to process and store the sound waveform as a sound file. The system further includes a sound output device coupled to the processing device. The sound output device is configured to output a sound file to simulate sounds within the womb.

Description

[0001] Cross-reference of related applications

[0002] This application claims the benefit and priority of U.S. Provisional Application No. 63 / 139,524, filed January 20, 2021. The entire disclosure of the aforementioned application is incorporated herein by reference.

[0003] background

[0004] It is well known that a mother's voice (such as breathing and talking) can calm a baby. These sounds are believed to indicate to the baby that their caregiver is present. A caregiver's heartbeat can also calm a restless baby and help them fall asleep when they are tired. Therefore, there is a need for a system and method to record, process, and / or amplify sounds produced by caregivers and provide these sounds to babies to soothe them.

[0005] Overview

[0006] This disclosure provides a system and method for outputting soothing sounds for an infant. The system includes a sound output device, which may be a speaker placed near the infant. The sound output device outputs real-time or pre-recorded sounds, such as human (e.g., a mother's) blood flow sounds, breathing sounds, heartbeats, digestive sounds, speech sounds, and other sounds produced by human physiological activities, to soothe the infant by simulating the sounds the infant experiences in the womb.

[0007] Sound is recorded via a wearable device worn around a person's wrist or chest. The wearable device includes a band with multiple sensors, which may be acoustic sensors, ultrasonic transducers, or other transducers configured to receive internal and external sounds generated by the wearer. The wearable device also communicates with a processing device, which may be a mobile phone, tablet, or remote computer (e.g., a server), running a software application that communicates with both the wearable device and the sound output device. The processing device is configured to process one or more sound waveforms generated by the sensors of the wearable device. Waveform processing may include mixing waveforms to produce a single output waveform and / or muting to simulate sounds within the womb, isolating or separating different sound waveforms generated from different sources, or filtering sound waves. Sound playback may be performed in real time or using pre-recorded sound files.

[0008] In addition, the sound output device is configured to detect whether the infant is calm or agitated by measuring the sound level in the room via an embedded microphone. When agitation is detected (which can be achieved by the sound output device and / or processing device, or manually triggered by the caregiver), the sound output device automatically outputs a real-time or pre-recorded sound to soothe the infant. Furthermore, the level of agitation can be displayed on a wearable device to continuously provide the wearer with feedback on the infant's condition.

[0009] According to one embodiment of this disclosure, a system for generating soothing sounds for infants is disclosed. The system includes a wearable device disposed on a person having a plurality of sensors, each sensor configured to output a sound waveform in response to sound generated by physiological activity of the person. The system also includes a processing device coupled to the plurality of sensors and configured to process and store the sound waveform as a sound file. The system further includes a sound output device coupled to the processing device. The sound output device is configured to output a sound file to simulate sounds within the womb.

[0010] Implementations of the above embodiments may include one or more of the following features. According to one aspect of the above embodiments, the sound output device may be configured to detect infant activity, and the processing device may be configured to indicate the level of infant activity. The wearable device may include a band formed of an elastic material configured to induce arterial stenosis, thereby increasing blood flow turbulence. Multiple sensors include at least one internal sensor disposed on the inner surface of the band and configured to measure sound generated by blood flow turbulence. An alternative transducer for measuring blood flow sound may employ ultrasound technology, including Doppler-based ultrasound. Multiple sensors may include at least one external sensor disposed on the outer surface of the band and configured to measure external sound. Sounds generated by human physiological activities include vascular sounds, breathing sounds, digestive sounds, motion sounds, and miscellaneous sounds. The processing device is configured to classify the sounds generated by human physiological activities and store sound files in corresponding storage groups. The processing device also includes a user input device configured to display a graphical user interface. The graphical user interface is configured to enable selection of at least one sound file for output via the sound output device. The sound output device includes a microphone and is configured to monitor the infant's level of agitation based on the sounds produced by the infant. The sound output device is also configured to output at least one sound file based on the infant's level of agitation. The wearable device may also be configured to display the infant's agitation status to the wearer. The processing device is further configured to mix or separate the sound waveforms.

[0011] According to another embodiment of this disclosure, a method for generating soothing sounds for an infant is disclosed. The method includes placing a wearable device on a person, the wearable device including a plurality of sensors. The method further includes generating a sound waveform at each of the plurality of sensors in response to sounds generated by physiological activities of the person. The method further includes processing the sound waveform at a processing device and storing the sound waveform as a sound file. The method further includes outputting the sound file at a sound output device coupled to the processing device to simulate sounds within the womb.

[0012] Implementation of the above embodiments may include one or more of the following features. According to one aspect of the above embodiments, the wearable device may include a band formed of an elastic material configured to induce arterial stenosis thereby increasing blood flow turbulence. Multiple sensors include at least one internal sensor disposed on the inner surface of the band and configured to measure sound generated by blood flow turbulence. Multiple sensors include at least one external sensor disposed on the outer surface of the band and configured to measure external sound. Sounds generated by human physiological activities include vascular sounds, breathing sounds, digestive sounds, movement sounds, and noises. The method may further include classifying the sounds generated by human physiological activities; and storing sound files in corresponding storage groups. The method may further include monitoring the level of agitation of an infant based on sounds generated by the infant via a microphone disposed in a sound output device, and outputting at least one of the sound files based on the level of agitation of the infant. Brief description of the attached diagram

[0014] Embodiments of this disclosure are described herein with reference to the accompanying drawings, in which:

[0015] Figure 1 This is a schematic diagram of a system for generating soothing sounds for an infant according to an embodiment of the present disclosure;

[0016] Figure 2 This is a perspective view of a wearable device for receiving sound according to an embodiment of the present disclosure;

[0017] Figure 3 According to one embodiment of this disclosure Figure 2 A schematic diagram of the system's processing equipment;

[0018] Figure 4 According to one embodiment of this disclosure Figure 3 A schematic diagram of the graphical user interface of the processing device; and

[0019] Figure 5 This is a perspective view of a wearable transducer assembly according to an embodiment of the present disclosure.

[0020] Detailed description

[0021] Embodiments of this disclosure are described in detail with reference to the accompanying drawings, wherein in each of the several views, similar reference numerals denote the same or corresponding elements. Figure 1 A system 10 is shown for generating soothing sounds to calm and comfort a baby "I". The system 10 includes a device connected to a processing unit 30. Figure 2 The processing device 30 is connected to one or more wearable devices 20 containing one or more sensors, and is further connected to an audio output device 50. In one embodiment, the processing device 30 may be a computing device 40, i.e., a tablet or mobile phone. In another embodiment, the computing device 40 may be used in conjunction with the processing device 30.

[0022] refer to Figure 1 and Figure 2 The wearable device 20 can be worn at one or more locations around the body or limbs of person “P”, such as the wrist, ankle, chest, etc. The wearable device 20 can be attached to person “P” using a strap 22 or an adhesive bandage (not shown) so that the wearable device 20 is in physical contact with person “P”, thereby allowing measurement of sounds produced by person “P” (e.g., mother).

[0023] When the wearable device 20 is worn around the wrist, the band 22 can be formed of an elastic material, such as silicone, rubber, a combination thereof, or any other suitable stretchable elastomer. The band 22 is mounted around the wrist to induce arterial narrowing, thereby creating blood flow turbulence to enhance the sound production associated with blood flow. When the wearable device 20 is worn around the chest, any suitable band, such as an adjustable and / or elastic band, can be used. The band 22 can be formed as a single strip. In embodiments, the band 22 can be formed from one or more strips or filaments woven in any suitable pattern.

[0024] Wearable device 20 includes one or more internal sensors 24 disposed on the inner surface 22a of band 22 (i.e., the surface in direct contact with person "P"). Internal sensors 24 are configured to measure sound generated within person "P". Internal sensors 24 may be microphones or any other type of acoustic transducer configured to measure sound, such as flexible membrane transducers, microelectromechanical systems (MEMS) microphones, electret membrane microphones, or any other microphone. When wearable device 20 is worn around the wrist, internal sensors 24 receive sound generated by blood flow, which is amplified by compression of band 22. When wearable device 20 is worn around the chest, internal sensors 24 receive sound generated by person "P's" heart, digestive system, and respiratory system.

[0025] In one embodiment, the internal sensor 24 may be a heart rate monitor, such as an electrocardiogram (“ECG”) sensor. The ECG sensor is configured to measure the electrical activity of the heart and is positioned on the chest of a person “P”. The internal sensor 24 may also be a photoplethysmography-based sensor, which uses an optical sensor to detect the volume of blood flow. Because the optical sensor measures blood flow, the internal sensor 24 can be placed at any suitable location with sufficient blood flow.

[0026] According to another embodiment, the internal sensor 24 (i.e., when the wearable device 20 is worn around the wrist) can be an ultrasound device configured to measure blood flow and present the information as a sound waveform using the Doppler effect or any other suitable technique in the absence of turbulence. The internal sensor 24 can also be any other suitable transducer, such as an optical transducer, capable of measuring normal blood flow and transmitting the sound of blood flow in the absence of turbulence.

[0027] The wearable device 20 also includes one or more external sensors 26 disposed on the outer surface 22b of the band 22. The external sensors 26 may be sensors of the same type as the internal sensors 24. The external sensors 26 are configured to receive sounds produced by a person “P”, including but not limited to human voices, motion sounds, breathing sounds, and other sounds.

[0028] Sensors 24 and 26 are coupled to a processing device 30, which is shown attached to the band 22. In an embodiment, the processing device 30 may be a separate device detachable from the wearable device 20. Sensors 24 and 26 may be coupled to the processing device 30 via a wired or wireless communication interface. Sensors 24 and 26 output sound waveform signals corresponding to various sounds produced by a human “P”, which are then processed by the processing device 30. In another embodiment, sensors 24 and 26 may be integrated into the housing of the processing device 30, with the internal sensor 24 disposed on the inner surface of the processing device 30 and the external sensor 26 disposed on the outer surface of the processing device 30.

[0029] refer to Figure 3 The processing device 30 includes a controller 31, which can be any suitable processor (e.g., control circuitry) adapted to perform the operations, calculations, and / or instruction sets described herein. This controller includes, but is not limited to, hardware processors, field-programmable gate arrays (FPGAs), digital signal processors (DSPs), central processing units (CPUs), microprocessors, and combinations thereof. Those skilled in the art will recognize that the processor can be replaced by any logical processor (e.g., control circuitry) adapted to perform the algorithms, calculations, and / or instruction sets described herein.

[0030] System 10 may also include computing device 40. Figure 1This includes, for example, handheld devices with touchscreens and applications for communicating with processing device 30, thereby replicating the functionality of user input device 33 and / or other functions of processing device 30 described herein. In embodiments, computing device 40 may communicate directly with wearable device 20, thus avoiding the need for processing device 30. It is conceivable that various computing environments and architectures can be implemented to provide the measurement, recording, and processing of sound generated by a human “P” for real-time or subsequent playback on sound output device 50.

[0031] The controller 31 may also include a memory, which may include one or more of volatile, non-volatile, magnetic, optical, or electrical dielectric materials, such as read-only memory (ROM), random access memory (RAM), electrically erasable programmable ROM (EEPROM), non-volatile RAM (NVRAM), or flash memory. The controller 31 and the memory device may be any standard processor and memory component known in the art.

[0032] The processing device 30 also includes a wireless interface 32, which may include an antenna and any other suitable transceiver circuitry configured to communicate with external devices (e.g., sensors 24 and 26) using a wireless communication protocol. Wireless communication may be implemented via one or more wireless configurations, such as radio frequency, optical, Wi-Fi, ANT+, etc. (An open wireless protocol used to exchange data over short distances from fixed and mobile devices using shortwave radio waves and to create personal area networks (PANs)) (A specification for a set of advanced communication protocols using small, low-power digital radios, based on the IEEE 802.15.4-2003 standard for Wireless Personal Area Networks (WPANs)). The processing device 30 may also include a user input device 33 having a display, i.e., a touchscreen, and / or one or more buttons, which allow the user to control the operation of the processing device 30.

[0033] The processing device 30 also includes waveform processing circuitry 34, which may include discrete components or be configured as a single circuit. Waveform processing circuitry 34 may be analog or digital and may be embodied in controller 31. The audio waveform signal can be digitized using any suitable method, such as a Fourier transform algorithm. Processing device 30 may include any suitable electronic components, such as an analog-to-digital (A / D) converter, to digitize the audio waveform signal.

[0034] One of the waveform processing circuits 34 may be a filter circuit configured to block and / or pass certain frequencies. The filter circuit may include one or more of the following filters: high-pass filter, low-pass filter, band-pass filter, notch filter, and / or their digital equivalent circuitry. Therefore, the filter circuit may be configured to adjust the pitch of the sound waveform. In another embodiment, the filter circuit may modify the waveform to cancel out noise. The filtered sound waveform signal may also be amplified by an amplifier. The amplitude may be adjusted by the user via user input device 33. The sound waveform may be divided into component waveforms based on the sound source, possibly using deconvolution, and using machine learning to match the waveform to a preset waveform group.

[0035] The processing device 30 also includes a memory 35 for storing recorded sound waveforms as sound files for subsequent playback via the sound output device 50. The processing device 30 can operate in real time by outputting sound waveforms via the sound output device 50, or by outputting pre-recorded sound waveforms. The memory 35 may include a database of various sounds recorded by sensors 24 and 26. The recorded sounds can be categorized based on their source. Thus, the sounds recorded by the internal sensor 24 of the wearable device 20, positioned on the wrist, provide vascular (i.e., blood flow) sounds. Similarly, the internal sensor 24 of the wearable device 20, positioned on the chest, provides vascular sounds (i.e., heartbeat), breathing sounds, and digestive sounds. The external sensors 24 and 26 provide human voice and motion sounds, as well as breathing sounds. Each of these sounds is stored in a corresponding storage group accessible from the database. In particular, the storage groups can be categorized by sound type, such as, but not limited to, vascular groups, human voice groups, breathing groups, digestive groups, motion groups, and noise groups.

[0036] In addition to storing sound waveforms based on the source sensor, a person "P" can use user input device 33 to play back the recorded sound and manually categorize it. In another embodiment, sound classification and recognition can be automatically performed by processing device 30 and / or computing device 40 using machine learning. It is conceivable that the recognition process can be continuously trained to automatically recognize sound using artificial intelligence.

[0037] The terms “artificial intelligence,” “data model,” or “machine learning” may include, but are not limited to, neural networks, convolutional neural networks (CNNs), recurrent neural networks (RNNs), generative adversarial networks (GANs), Bayesian regression, naive Bayes, nearest neighbor, least squares, mean and support vector regression, and other data science and artificial intelligence techniques.

[0038] The neural network can be used to train processing device 30 and / or computing device 40. In various embodiments, the neural network may include a temporal convolutional network with one or more fully connected layers, or a feedforward network. In various embodiments, training of the neural network may occur on a separate system, such as a graphics processing unit (“GPU”) workstation, a high-performance computing cluster, etc., and the trained algorithm will then be deployed on processing device 30. In another embodiment, training of the neural network may occur locally, for example, on processing device 30 and / or computing device 40. After training, processing device 30 may include a software application executable by controller 31 to identify various recorded sounds and classify them into appropriate storage groups.

[0039] Reference Figure 4 An exemplary graphical user interface (“GUI”) 60 is shown on the display of user input device 33. GUI 60 may include multiple buttons 62a-62e providing the user with options for controlling system 10 and an indicator 64 providing the status of system 10. Indicator 64 may use colors and other markings to provide the status of each component of system 10, namely the wearable device 20, processing device 30, computing device 40, and sound output device 50. Button 62a may be used to adjust the operation of system 10, such as enabling specific sensors 24 and 26, setting the position of sound output device 50, etc. Button 62b allows the user to configure system 10 for real-time transmission of sound recorded by sensors 24 and 26 to sound output device 50. Button 62c allows the user to access a storage group with pre-recorded sounds and select one or more sounds for playback via sound output device 50. Button 62d is used to select between playback types. Playback types may include a loop mode, in which sound output device 50 cycles through different groups of sounds or individual sounds within a specific group of sounds. Another mode can be a continuous mode, in which one or more sounds loop continuously until the end. Button 62e can be used to access the configuration screen for connecting to other devices of system 10, such as wearable device 20 and sound output device 50.

[0040] The sound output device 50 can be any suitable speaker placed near or worn by the infant "I", such as an infant monitor. The sound output device 50 can be located in the room or in the crib. In embodiments, the sound output device 50 can be embedded in or otherwise concealed within toys or clothing worn by the infant "I". The sound output device 50 is configured to output sound recorded by the wearable device 20 and transmitted by the processing device 30 and / or the computing device 40.

[0041] The sound output device 50 can be any wireless speaker, such as a baby monitor, configured to communicate with the processing device 30 and / or the computing device 40. The sound output device 50 may also include a storage device 52 and a microphone 54. The storage device 52 can store pre-recorded sound waveforms from the processing device 30. In an embodiment, the storage device 52 can be a cloud-based storage service accessible to the system 10. The sound output device 50 is configured to monitor the level of agitation in the baby “I”. Playback can also be initiated by the person “P” or in response to the sound output device 50 detecting agitation or other events via the microphone 54. More specifically, the sound output device 50 outputs real-time or pre-recorded sounds, such as the mother’s blood flow sounds, breathing sounds, heartbeat, digestion sounds, speech sounds, and other sounds produced by the physiological activities of the person “P”’s body, to soothe the baby “I” by simulating sounds from inside the womb. These sounds will soothe the baby “I” because they are accustomed to such sounds in the womb.

[0042] Microphone 54 is configured to monitor any activity of the infant "I" to automatically activate sound output device 50. Sound output device 50 may include a controller configured to determine whether a detected sound corresponds to movement or agitation of the infant "I," such as crying, gurgling, etc., or sound output device 50 may transmit recorded sound to processing device 30 and / or computing device 40 for this determination. Once agitation of the infant "I" is determined, processing device 30 and / or computing device 40 sends or otherwise instructs sound output device 50 to output a soothing sound in an attempt to calm the infant "I." Sound output is based on selections made by the person "P" via GUI 60, such as which sounds to output and the output mode, i.e., looping and (vs.) holding. More specifically, sound output device 50 may be instructed to output one or more sound waveforms simultaneously. In embodiments, processing device 30 and / or computing device 40 may superimpose and / or mix multiple waveforms, i.e., sounds from multiple memory sets.

[0043] Additionally, processing device 30 and / or computing device 40 may output the sound level or other indications of infant activity, which may be displayed as a decibel bar on GUI 60. Sound output device 50 may include a camera configured to detect infant movement. Therefore, sound and / or motion detection can be used to determine the level of infant activity. In another embodiment, processing device 30 and / or computing device 40 may include a haptic device configured to vibrate in response to notification of infant activity. Wireless communication capabilities of processing device 30 and / or computing device 40 allow use of these devices from any distance relative to the infant.

[0044] During the initial setup of system 10, person "P" attaches one or more wearable devices 20 to suitable locations on the body, namely the chest and / or wrist. Person "P" also pairs the sound output device 50 with the processing device 30 and / or the computing device 40. In embodiments where the computing device 40 is part of system 10, the processing device 30 may also be paired with the computing device 40 to enable communication with applications running on the computing device 40. Once the initial setup is complete, the processing device 30 is configured to output sound based on options selected via GUI 60 as described above.

[0045] refer to Figure 5 System 10 may also include additional devices configured to couple to processing device 30 and / or computing device 40. Specifically, system 10 may include a transducer assembly 70 having a housing 72 that encloses sensor 24 and other components of processing device 30, such as driver circuitry, transmitters, etc. Transducer assembly 70 may include a post 74 or other attachment device configured to secure transducer assembly 70 to a strap worn around the patient's wrist (e.g., Apple). (The watch strap). The transducer assembly 70 can be positioned under the watch strap, such that the transducer assembly 70 is positioned above the artery.

[0046] It should be recognized that the features and functions disclosed above, and other alternatives thereof, can be ideally combined into many other different systems or applications. Those skilled in the art can subsequently make various substitutions, modifications, variations, or improvements that are not currently foreseen or anticipated, and these are intended to be included in the appended claims as well. Unless specifically recited in the claims, the steps or components of the claims should not be implied or introduced from the specification or any other claims in any particular order, quantity, position, size, shape, angle, or material.

[0047] According to embodiments of this disclosure, the following aspects are also provided:

[0048] Project 1): A system for generating soothing sounds for infants, the system comprising:

[0049] A wearable device worn on a person, the wearable device including a plurality of sensors, each sensor being configured to output a sound waveform in response to sound generated by a person’s physiological activities;

[0050] A processing device coupled to the plurality of sensors and configured to process the sound waveform and store the sound waveform as a sound file; and

[0051] A sound output device coupled to the processing device, wherein the sound output device is configured to output the sound file to simulate sounds inside the uterus.

[0052] Project 2): The system according to Project 1), wherein the sound output device is configured to detect infant activity, and the processing device is configured to indicate the level of infant activity.

[0053] Project 3): The system according to Project 1), wherein the wearable device includes a band formed of an elastic material configured to induce arterial stenosis thereby increasing blood flow turbulence.

[0054] Project 4): The system according to Project 3), wherein the plurality of sensors includes at least one internal sensor disposed on the inner surface of the belt and configured to measure sound generated by the blood flow turbulence, and the at least one internal sensor is at least one of an acoustic sensor, an ultrasonic sensor or an optical sensor.

[0055] Project 5): The system according to Project 3), wherein the plurality of sensors includes at least one external sensor disposed on the outer surface of the belt and configured to measure external sound, and the at least one external sensor is an acoustic sensor.

[0056] Project 6): According to the system described in Project 1), the sounds produced by human physiological activities include vascular sounds, breathing sounds, digestive sounds, movement sounds, and noises.

[0057] Project 7): The system according to Project 6), wherein the processing device is configured to classify sounds generated by human physiological activities and store the sound files in corresponding storage groups.

[0058] Project 8): The system according to Project 1), wherein the sound output device includes a microphone and is configured to monitor the level of agitation of the infant based on the sounds produced by the infant.

[0059] Project 9): The system according to Project 8), wherein the sound output device is further configured to output at least one of the sound files based on the infant's level of agitation.

[0060] Item 10): The system according to Item 7), wherein the processing device further includes a user input device configured to display a graphical user interface.

[0061] Item 11): The system according to Item 10), wherein the graphical user interface is configured to enable the selection of at least one of the sound files for output via the sound output device.

[0062] Project 12): The system according to Project 1), wherein the processing device is further configured to mix the sound waveform.

[0063] Item 13): A method for generating soothing sounds for infants, the method comprising:

[0064] A wearable device is placed on a person's body, and the wearable device includes multiple sensors;

[0065] In response to sounds generated by human physiological activities, a sound waveform is generated at each of the plurality of sensors;

[0066] Process the sound waveform at the processing device and store the sound waveform as a sound file; and

[0067] The sound file is output at a sound output device coupled to the processing device to simulate sounds inside the uterus.

[0068] Item 14): The method according to Item 13), wherein the wearable device includes a band formed of an elastic material configured to induce arterial stenosis thereby increasing blood flow turbulence.

[0069] Item 15): The method according to Item 14), wherein the plurality of sensors includes at least one internal sensor disposed on the inner surface of the belt and configured to measure sound generated by the blood flow turbulence, and the at least one internal sensor is at least one of an acoustic sensor, an ultrasonic sensor or an optical sensor.

[0070] Item 16): According to the method of Item 15), wherein the plurality of sensors includes at least one external sensor disposed on the outer surface of the belt and configured to measure external sound, and the at least one external sensor is an acoustic sensor.

[0071] Project 17): According to the method described in Project 13), the sounds produced by human physiological activities include vascular sounds, breathing sounds, digestive sounds, movement sounds, and noises.

[0072] Item 18): The method described in Item 17) further includes:

[0073] Classifying sounds produced by human physiological activities; and

[0074] The sound file is stored in the corresponding storage group.

[0075] Project 19): The method described in Project 13) further includes:

[0076] The level of agitation in an infant is monitored using a microphone located in the sound output device, based on the sounds produced by the infant.

[0077] Project 20): The method described in Project 19) further includes:

[0078] At least one of the sound files is output based on the infant's level of agitation.

Claims

1. A system for generating soothing sounds for infants, the system comprising: A wearable device including a plurality of sensors, each sensor being configured to output a sound waveform in response to sound generated by physiological activity of a person wearing the wearable device; A processing device coupled to the plurality of sensors and configured to process the sound waveform and store the sound waveform as a sound file; as well as A sound output device coupled to the processing device, wherein the sound output device is configured to output the sound file to simulate sounds inside the uterus; The wearable device includes a band configured to induce arterial stenosis, thereby increasing blood flow turbulence.

2. The system according to claim 1, wherein, The sound output device is configured to detect infant activity, and the processing device is configured to indicate the level of infant activity.

3. The system according to claim 1, wherein, The band is formed of an elastic material.

4. The system according to claim 1, wherein, The plurality of sensors includes at least one internal sensor disposed on the inner surface of the belt and configured to measure sound generated by the blood flow turbulence, and the at least one internal sensor is at least one of an acoustic sensor, an ultrasonic sensor, or an optical sensor.

5. The system according to claim 1, wherein, The plurality of sensors includes at least one external sensor disposed on the outer surface of the belt and configured to measure external sound, and the at least one external sensor is an acoustic sensor.

6. The system according to claim 1, wherein, Sounds produced by human physiological activities include vascular sounds, breathing sounds, digestive sounds, movement sounds, and noises.

7. The system according to claim 6, wherein, The processing device is configured to classify sounds produced by human physiological activities and store the sound files in corresponding storage groups.

8. The system according to claim 1, wherein, The sound output device includes a microphone and is configured to monitor the baby's level of agitation based on the sounds produced by the baby.

9. The system according to claim 8, wherein, The sound output device is also configured to output at least one of the sound files based on the infant's level of agitation.

10. The system according to claim 7, wherein, The processing device also includes a user input device configured to display a graphical user interface.

11. The system according to claim 10, wherein, The graphical user interface is configured to allow selection of at least one of the sound files for output via the sound output device.

12. The system according to claim 1, wherein, The processing device is also configured to mix the sound waveforms.

13. A method for generating a soothing sound for an infant, the method comprising: A wearable device is placed on a person's body, and the wearable device includes multiple sensors; In response to sounds generated by human physiological activities, a sound waveform is generated at each of the plurality of sensors; The sound waveform is processed at the processing device and stored as a sound file; as well as The sound file is output at a sound output device coupled to the processing device to simulate sounds inside the uterus; The wearable device includes a band configured to induce arterial stenosis, thereby increasing blood flow turbulence.

14. The method according to claim 13, wherein, The band is formed of an elastic material.

15. The method according to claim 13, wherein, The plurality of sensors includes at least one internal sensor disposed on the inner surface of the belt and configured to measure sound generated by the blood flow turbulence, and the at least one internal sensor is at least one of an acoustic sensor, an ultrasonic sensor, or an optical sensor.

16. The method according to claim 13, wherein, The plurality of sensors includes at least one external sensor disposed on the outer surface of the belt and configured to measure external sound, and the at least one external sensor is an acoustic sensor.

17. The method according to claim 13, wherein, Sounds produced by human physiological activities include vascular sounds, breathing sounds, digestive sounds, movement sounds, and noises.

18. The method of claim 17, further comprising: Classify sounds produced by human physiological activities; as well as The sound file is stored in the corresponding storage group.

19. The method of claim 13, further comprising: The level of agitation in an infant is monitored using a microphone located in the sound output device, based on the sounds produced by the infant.

20. The method of claim 19, further comprising: At least one of the sound files is output based on the infant's level of agitation.

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