35 results about "Vocal fold vibration" patented technology

A system for imaging high speed moving objects, for example, using a scanning beam and beam delivery optics with fast signal processing. It can allow for vocal fold imaging at up to or exceeding approximately 1000 frames per second with grayscale resolution as high as about 100 micrometers or higher and up to about a 12.4 mm square or larger viewing area. The invention can provide imaging of vocal fold vibration that correlates completely with a synchronously-acquired acoustic voice signal. This can enable physicians, voice therapists and research scientists to understand the consequences of abnormal laryngeal dynamics, rather than being limited to simply observing the dynamics. Further, the application of laser technology will allow for accurate measurements of dimension. This can objectify examination findings and treatment outcomes measurement, helping to overcome the serious limitations of current perceptual-based judgments.

A method and system for the assessment and diagnosis of voice in normal and diseased states can include determining at least one quantitative measure of vocal fold vibration using a laryngeal image recording of a subject's vocal fold obtained from an endoscopic device or an auditory recording of a subject during a phonatory task, and can include subsequent analysis of a waveform selected from waveform types comprising a) an acoustic recording, and b) a glottal waveform that is extracted from the laryngeal image recording. The method and system can generate a comprehensive, at-a-glance, physician friendly visual pattern and characteristics of vocal fold vibrations and correlate with specific voice conditions for diagnosis and assessment of voice and therapies and treatments of voice disorder.

The invention relates to a detecting system and method for the mechanical properties of vocal fold vibration. The detecting system comprises a high-speed photography laryngoscope module, a high frame rate ultrasound module, a data acquisition module, a synchronous acquisition control module, an image display module, a data storage module, an imaging data processing module and a mechanics parameter extraction module; a high-speed photography laryngoscope and high frame rate ultrasound are respectively connected with the same computer. The detecting method comprises the following steps: 1) setting corresponding acquisition duration and storage path; 2) ensuring a high frame rate ultrasound probe to cling to the side of throat and inserting the high-speed photography laryngoscope from an oral cavity; 3) regulating related parameters of ultrasound and position and focus of the high-speed photography laryngoscope; 4) ensuring persons to be detected to vocalize and synchronously acquiring and storing data; 5) extracting glottis area and somatic layer shift; 6) extracting the mechanics parameter of vocal fold vibration. The invention provides a quantitative extracting method of the mechanics parameter of vocal fold vibration, thus obtaining the mechanics parameter of vibration of a vocal fold cover layer and the somatic layer with different mechanical properties.

The invention discloses a vocal-cord vibration nondestructive measurement method by utilizing a natural vocal track ultraphonic waveguide effect. The method comprises the following steps of: stimulating an ultrasonic wave through an air ultrasonic transducer, and guiding the ultrasonic wave into an oral cavity and a vocal track; transmitting the ultrasonic wave in a natural acoustic waveguide formed by a vocal track of a human body to arrive a vibrated vocal track; through reflection of a surface of the vocal track, transmitting the ultrasonic wave back to the oral cavity through the vocal track, and detecting a reflection echo through the air ultrasonic transducer; after digitalizing a reflection signal, computing frequency deviation of the reflection signal relative to a transmitting signal; obtaining relative movement speed of a refection surface of the ultrasonic wave (i.e. the surface of the vocal track) through a doppler frequency shift formula; and integrating a speed value so as to obtain a movement displacement signal of the reflection surface of the ultrasonic wave. According to the vocal-cord vibration nondestructive measurement method provided by the invention, the ultrasonic transducer has no need to be stretched into the deep part of the vocal track, an examined patient has no need to maintain a particular body posture to straighten the vocal track, and higher safety and usability are realized.

The invention relates to a method for separating sound of single channels on the basis of human sound models. The method includes steps of building the human sound models by the aid of source filters; providing input signals; constructing human sound power of the input signals by the aid of vocal cord vibration power models and filter models of vocal tracts and oral cavities; constructing background sound power of the input signals; reconstructing signal power spectra of the input signals according to the constructed human sound power and the constructed background sound power; solving human sound power and background sound power in the reconstructed signal power spectra and separating human sound signals and background sound signals from the input signals according to the solved human sound signals and the solved background sound signals. The built human sound models comprise the vocal cord vibration power models and the filter models of the vocal tracts and the oral cavities. The method for separating the sound of the single channels has the advantages that human sound can be separated from background sound by the aid of the method under extremely noisy conditions, and the method can be used in the fields of speech enhancement, human sound extraction and the like and is high in practicality.

The invention relates to a vibration feedback system and device for speech rehabilitation. The vibration feedback system and device comprise a video acquisition module, a video processing module, a speech acquisition module, a speech processing module, a synchronous processing module, a data transmission module, a data display module, a vibration acquisition module, a signal processing module anda vibration feedback module. The invention provides an audio and video recognition system; meanwhile, the video acquisition module and the vibration feedback module are added to assist deaf students in a visual three-dimensional human face speech production model and vocal cord vibration simulation during hearing-speech rehabilitation training; the vibration feedback module can feed back the vocalcord vibrating condition in the speech production process of deaf children and gives feedback; the vibration feedback system is a rehabilitation system fusing mentor simulation of speech production process by three-dimensional virtual speech, vocal cord vibrating simulation and vibration information feedback and assisting speech training of the deaf students.

A voice analyzing apparatus comprises: a first analyzer that analyzes a voice into harmonic components and inharmonic components: a second analyzer that analyzes a magnitude spectrum envelope of the harmonic components into a magnitude spectrum envelope of a vocal cord vibration waveform, resonances and a spectrum envelope of a difference of the magnitude spectrum envelope of the harmonic components from a sum of the magnitude spectrum envelope of the vocal cord vibration waveform and the resonances; and a memory that stores the inharmonic components, the magnitude spectrum envelope of the vocal cord vibration waveform, resonances and the spectrum envelope of the difference.

The invention discloses a voice synthesis method based on voice radar and videos. The method comprises the following steps: acquiring vocal cord vibration frequency as basic voice frequency from a radar echo signal; fitting movement characteristics extracted from lip video information of a speaker in talking with a resonance peak extracted from microphone synchronous acquired voice signals, and acquiring an experience equation of a mapping relationship of the lip movement characteristics and the resonance peak; by taking a lip video of a tester in talking as input, acquiring a time-varying resonance peak; and finally, carrying out voice synthesis on obtained basic frequency and the time-varying resonance peak. By adopting the method disclosed by the invention, voice radar can be combined with image information without contacting a speaker, and voice synthesis can be achieved.

The invention discloses an ear canal microphone, and relates to the voice frequency communication technology. A sound pickup (4) is arranged at an eardrum end (203) of an ear canal cylinder (202), the sound pickup (4) collects eardrum vibration or/and ear canal vibration in an ear canal to recover a voice signal, the eardrum vibration or/and the ear canal vibration is caused by vibration of the vocal cord of a speaker, and is caused through bone conduction, the sound pickup (4) does not collect a sound wave of noise in the external environment of the ear canal of a user, and the obtained voice signal is pure. The ear canal microphone can especially meet the requirement of the voice intelligent control technology for the degree of pureness of a key word, is a front end bottleneck device necessary for promoting practicability of the voice intelligent control technology, and also improves voice communication in the noisy environment.

The invention belongs to the technical field of voice recognition, solves the technical problem of low accuracy of judging baby cry through voice recognition, and provides a method, a device and equipment for identifying baby cry category through multi-feature fusion. The method comprises the following steps: acquiring an audio feature when a baby cries, an action feature value of a posture action and a vibration spectrum of vocal cord vibration; converting the actionfeature value into a standard feature value in a database; based on the standard feature value, performing feature fusion on the audio feature and the vibration spectrum; inputting the fused features into a preset neural network, and obtaining the cry category of the baby according to a coding feature vector output by the neural network, wherein the standard feature value is a probability value of each cry category represented by the corresponding posture action. The invention further comprises a device for executing the method and equipment According to the method, the requirements of the baby are enhanced by utilizing the posture features, so that misjudgment can be reduced, and the cry detection accuracy is improved.

The invention discloses a silent speech recognition method and system. The method comprises the following steps: acquiring facial electromyographic signal data and vocal cord vibration signal data during speaking; respectively preprocessing two types of acquired data, extracting and fusing features, and sequentially performing training and identifying by using deep learning; and sending the identified command result to the receiving equipment or the controlled equipment. The system comprises a data acquisition module, a signal processing module and a communication interaction module. Comparedwith a silent speech recognition method based on a single signal, the silent speech recognition method integrates two characteristic signals used in a silent speech recognition technology, including afacial electromyographic signal and a vocal cord vibration signal, so that higher recognition accuracy can be obtained.

The invention discloses a voice control system and method of a hydraulic support based on vocal cord vibration measurement. The method comprises the steps that the vocal cord vibration of an operatoris converted into a corresponding electrical signal through a vibration measurement unit; the electrical signal is amplified by a signal amplification unit, then converted by a vibration signal A/D conversion unit and then transmitted to a signal processing unit for analysis and processing to obtain a voice control command corresponding to the vocal cord vibration signal; and then the voice control command is compared and matched with a standard voice control command to indentify the vocal cord of the operator, the control signal corresponding to the vocal cord is sent to a hydraulic support controller wireless transceiver unit through a wireless signal transceiver unit, and at the same time, the hydraulic support controller wireless transceiver unit feeds back the status parameters of thehydraulic support. The voice control system of the hydraulic support based on the vocal cord vibration measurement is simple to operate, the operator only needs to give the voice control command, andthe hydraulic support can make corresponding actions; and accurate recognition of the voice control command in a noisy environment can be realized, and the voice control method can be used as an auxiliary control method to ensure the normal operation of the hydraulic support.

The invention discloses a mathematical formula memorizing device convenient for communication, and aims at solving the problem of low formula memorizing efficiency in the prior art. The mathematical formula memorizing device comprises lighting lamps, observation windows, universal tubes, connecting blocks, head hoods, elastic cords, protective blocks, slide blocks, spiral springs, guide rods, stopblocks, a connecting ring, connecting rods, locating rods, clamp blocks, balls and paper cones. The invention relates to the field of mathematics teaching. The vocal cord vibration frequency and amplitude of the teacher can be observed through cooperation of the arranged paper cones and the balls so that learning of the pronunciation of the mathematical symbol can be facilitated and memorizing ofthe mathematical formula can be more easily performed. Two protective blocks are arranged so that the student is enabled to learn and memorize the mathematical formula along with the shape of the mouth of the teacher, the learning interest of the student can be increased, the formula memorizing effect can also be enhanced, the design is reasonable, operation is convenient and the mathematical formula memorizing device is worthy of popularization.

The invention provides a bionic device for simulating vocal cord vibration by utilizing double-lamination transducers. A simulation box is used for simulating a vocal track cavity. Left and right muscle simulation layers in the simulation box and first and second double-lamination transducers between the left and right muscle simulation layers vibrate are utilized to simulate the vocal cord vibration and drive muscles to act to hinder the stretching and the vibration of a vocal cord to simulate the sound production of human vocal cords in different states, the lengths of the piezoelectric ceramic transducers are regulated to simulate the vibration of different human vocal cords and the vibration of vocal cords with pathological changes, and the amplitude of alternating current voltage is regulated to simulate the vibration of the vocal cords for producing high-pitched sounds or low-pitched sounds, so that the vibration of the vocal cords under different vibration frequency and different vibration amplitude is simulated, and vocal cord structures are simulated in a multi-level way. Moreover, the bionic device is simple in structure and convenient to operate.

The invention relates to a method for controlling a microphone switch by a three-axis acceleration sensor, electronic equipment and a computer readable storage medium. The method is used for reducingthe power consumption of an earphone, and comprises the following steps: step A, starting the three-axis acceleration sensor in the earphone to carry out X, Y and Z three-axis data acquisition on vocal cord vibration caused by skull attached muscles when a user speaks, and controlling the Z axis of the three-axis acceleration sensor to be perpendicular to the direction of ears of the user and parallel to the horizontal direction in the acquisition process; step B, cyclically detecting an energy accumulation value of Z-axis data in a period according to a set detection period, and triggering tostart the microphone to pick up sound when the energy accumulation value of the Z axis exceeds a set bone vibration switch threshold value; and step C, after the microphone is started, if the energyaccumulation value of the Z axis is not detected to exceed the bone vibration switch threshold after the set duration is continuously exceeded, turning off the microphone.

The invention relates to a tracheotomy catheter capable of meeting the speaking requirement. According to the technical scheme, the tracheotomy catheter capable of meeting the speaking requirement comprises an inner catheter used for forming a breathing support air channel and an external tracheotomy tube capable of being arranged on the inner catheter in a sleeving mode. A vocal cord vibration airflow branch can be formed through cooperation of the external tracheotomy tube and the inner catheter, and the vocal cord vibration airflow branch and the breathing support air channel formed by the inner catheter are isolated from each other and independent of each other so that the breathing support air channel can be used for carrying out needed breathing support and/or the vocal cord vibration airflow branch can be used for providing airflow needed by vocal cord vibration. After tracheotomy intubation, the speaking requirement can be met, language communication between a tracheotomy patient and medical staff is effectively achieved, and the tracheotomy catheter is convenient to use, safe and reliable.