280 results about "Sound localization" patented technology

Methods, apparatus, and computer programs for simulating the source of sound are provided. One method includes operations for determining a location in space of the head of a user utilizing face recognition of images of the user. Further, the method includes an operation for determining a sound for two speakers, and an operation for determining an emanating location in space for the sound, each speaker being associated with one ear of the user. The acoustic signals for each speaker are established based on the location in space of the head, the sound, the emanating location in space, and the auditory characteristics of the user. In addition, the acoustic signals are transmitted to the two speakers. When the acoustic signals are played by the two speakers, the acoustic signals simulate that the sound originated at the emanating location in space.

A method and apparatus for processing an audio sound source to create four-dimensional spatialized sound. A virtual sound source may be moved along a path in three-dimensional space over a specified time period to achieve four-dimensional sound localization. A binaural filter for a desired spatial point is applied to the audio waveform to yield a spatialized waveform that, when the spatialized waveform is played from a pair of speakers, the sound appears to emanate from the chosen spatial point instead of the speakers. A binaural filter for a spatial point is simulated by interpolating nearest neighbor binaural filters chosen from a plurality of pre-defined binaural filters. The audio waveform may be processed digitally in overlapping blocks of data using a Short-Time Fourier transform. The localized sound may be further processed for Doppler shift and room simulation.

Methods and apparatus are disclosed for processing an audio sound source to create four-dimensional spatialized sound. A virtual sound source may be moved along a path in three-dimensional space over a specified time period to achieve four-dimensional sound localization. The various embodiments described herein provide methods and systems for converting existing mono, 2-channel and/or multi-channel audio signals into spatialized audio signals have two or more audio channels. The incoming audio signals may be down-mixed, up-mixed or otherwise translated into fewer, greater or the same number of audio channels. The various embodiments also describe methods, systems and apparatus for generating low frequency effect and center channel signals from incoming audio signals having one or more channels.

This invention is a method for binaural localization using a cascade of resonators and anti-resonators to implement an HRTF (head-related transfer function). The spectrum of the cascade reproduces the magnitude spectrum of a desired HRTF. The proposed method provides a considerably more computationally efficient implementation of HRTF filters with no detectable deterioration of output quality while saving memory when storing a large quantity of HRTFs due to the parameterization of its resonators and anti-resonators. Finally, the method offers additional flexibility since the resonators and anti-resonators can be manipulated individually during the design process, making it possible to interpolate smoothly between HRTFs, reduce spectral coloring or achieve higher accuracy at perceptually relevant frequency regions. These HRTF are useful in stereo enhancement and multi-channel virtual surround simulation.

The present disclosure relates to a display device for generating sound by directly vibrating a display panel thereof, which includes a display panel connected to a surface of the display panel and configured to display an image; and a sound generating actuator, which is fixed to a support structure of the display panel and attached to the display panel to directly vibrate the display panel. In the display device, the progressing direction of the sound coincides with the image output direction in the display device. Therefore, sound localization or sound output characteristics of the display device or set apparatus can be improved, and a separate speaker is not required, the mechanism of the set apparatus can be easily designed, and a thickness thereof can be easily reduced.

A method for sound source localization in a digital system having at least two audio capture devices is provided that includes receiving audio signals from the two audio capture devices, computing a signal-to-noise ratio (SNR) for each frequency band of a plurality of frequency bands in a processing frame of the audio signals, determining a frequency band weight for each frequency band of the plurality of frequency bands based on the SNR computed for the frequency band, computing an estimated time delay of arrival (TDOA) of sound for the processing frame using the frequency band weights, and converting the estimated TDOA to an angle representing sound direction.

The invention relates to a driver sound localization system and method for an automobile. The system comprises a first sound collecting device, a second sound collecting device and a control system, wherein the first sound collecting device and the second sound collecting device are used for collecting a first sound signal and a second sound signal; the control system is used for respectively processing the first sound signal and the second sound signal so as to output driver locating information; and the control system further comprises a noise reduction device, a filtering device, a sound activation detecting device, a long frame framing device, an envelope calculating device and an energy ratio calculating device and used for calculating the envelope energy ratio of the first and second sound signals according to the calculation results of the envelope calculating device and the long frame framing device. The driver sound localization system and method for the automobile have the advantages of relatively low cost and high locating accuracy and real-time performance.

The embodiment of the invention discloses a sound-source location method and system e. A basic collection device is positioned on at least two locations in a plane; the basic collection device collects a group of audio signals from the sound source at each location; the plane is the common plane where both the basic collection device and the sound source are arranged; the estimated location of a group of sound source is calculated according to the collected each group of audio signals; the actual location of the sound source is calculated according to the estimated location of the sound source which is convergent to the same point. The audio signals are collected through changing the location of the basic collection device; the actual location of the sound source is calculated according to the collected multiple groups of audio signals; the invention completes the location of the sound source which is realized in the current technology by using at least two basic collection devices; the invention improves the utilization efficiency of the basic collection device.

The invention relates to a voice recognition method and method based on sound source localization and an intelligent household appliance. The voice recognition method comprises the following steps of: when the intelligent household appliance enters a voice recognition state, acquiring a voice signal, and controlling a timer to start timing; if the voice signal is acquired when the time recorded by the timer is less than or equal to a preset time, performing location according to the voice signal, and determining position information a sound source corresponding to the voice signal; and determining whether to control the intelligent household appliance to perform recognition of the voice signal or not according to the position information and prestored voice recognition area information, thereby removing interferential voice signals, effectively improving recognition rate of the voice recognition system, and promoting interactive experience of a user.

The invention is suitable for the field of traveling shoot, and provides a shoot control method and a shoot control device. The method comprises the following steps of: receiving sound information and identifying a sound made by a shot object; positioning the shot object according to the sound made by the shot object; and automatically zooming according to the position of the shot object, and shooting the shot object. According to the method, the distance position of the shot object is judged by receiving the sound of the shot object, the need of performing zooming processing is judged according to the distance position of the shot object, and automatic zooming processing is performed under the condition that zooming processing is needed, so that the shot object is positioned at the shooting zooming position of a lens in a shooting process, a user does not need to zoom manually, and complex zooming operation is avoided; and meanwhile, rapid judgment and accurate zooming can be performed by zooming according to sounds.

A sound source localization system and a sound source localization method. The sound source localization system includes sound capturing devices and an arithmetic unit. The sound capturing devices sense a sound source to output time domain signals. The arithmetic unit transforms the time domain signals into frequency domain signals, performs a cross spectrum process according to the frequency domain signals to determine time differences of arrival, and locates the sound source according to the time differences of arrival and locations of the sound capturing devices.

The invention relates to an adaptive microphone array sound positioning rescue robot and a using method thereof. A robot comprises a vehicle body having a running mechanism, a main control unit on the vehicle body and connected with a running driving motor, an obstacle avoiding module and a sound positioning module, wherein the obstacle avoidance module is three sets of supersonic wave detectors, supersonic waves are respectively emitted from the right ahead portion, the front side portion and the front upper portion, an electric cylinder push rod end of the sound positioning module fixed on the vehicle body is equipped with a supporting block and a supporting board, the gear shaft penetrates through the supporting board of which upper and lower surfaces are respectively equipped with a gear and two tooth bar guide rods, and an outer end of each tooth bar guide rod is fixedly equipped with a microphone array element to form a cross array. According to the using method, the three sets of supersonic wave detectors are controlled by a main control unit to detect distances between obstacles and the vehicle body, height and array element separation distances of the microphone arrays are adaptively maintained to be the largest at the maximum degree, moreover, sound received by four array elements is analyzed, positioning on a help-seeking sound source is carried out to correct a navigation angle to approach the help-seeking sound source. Through the using method, a complex disaster site can be rapidly and safely reached, sound source positioning precision is high, and searching efficiency is high.

The invention relates to the technical field of special robot systems, in particular to a household security robot system based on wireless communication. The system comprises a robot body and an intelligent control terminal. The robot body is equipped with a mechanical arm and a camera. A base is arranged at the bottom of the robot body. A driving device, a storage battery, a main control unit, a data memory, a sensor unit, a wireless communication unit, a household control unit, an electric quantity detection device, a speech recognition device and an alarm are arranged on the base. A sensor unit comprises an obstacle avoiding sensor and a human body infrared sensor. The speech recognition device comprises a microphone and a sound positioning device. The security robot system has various functions, and is capable of achieving remote control, highly practical and suitable for promotion in the field.

The invention belongs to the electronic technology field and specifically relates to an intelligent environmental lifestyle trash can device. The intelligent trash can device comprises a central processing module, a sound acquiring module, a sound data storing module, a sound identifying module, a motor driving module, an obstacle avoiding device and a human body induction system. Voice commands of an user are acquired in real time by using the sound acquiring module and the sound identifying module, the voice commands are judged whether to exist through judgment and treatment of a central controller, if so, the commands are sent to the motor driving module through a central processing unit, and the motor driving module is moved towards a position where the voice commands are sent to the user. The voice commands of the user can be located and identified by the intelligent trash can device, the trash can automatically move towards the position where the commands are sent to the user when the correct voice commands are sent by the user, a barrier is automatically opened when the trash can encounters the barrier, and the trash can cover is automatically opened when the trash can reach the predetermined place, thus the disable people can conveniently throw garbage by the device.

The invention provides a multi-channel speech enhancement method based on semantic prior selective attention. The method comprises the following steps: picking speech signals from any directions in a reverberant environment by virtue of a multi-microphone array, collecting the multiple paths of speech signals and pre-processing the speech signals; detecting special activation words in the pre-processed speech signals by virtue of an activation word speech recognition model; processing signals which are not cut and include activation word segments, so as to obtain a complete activation word segment; analyzing the activation word segment by virtue of a multi-channel phase difference sound localization method based on reverberation robust, so as to obtain an acoustic wave reaching direction of a target sound source; and enhancing speech in the direction and inhibiting noise from other directions and room reverberation in a remote speak scene, so that enhanced speech in the target direction is obtained. The method provided by the invention is applicable to such occasions as intelligent household electrical appliance, smart home, vehicle-mounted and wearable devices and the like that remote speak type speech input and interaction are required, and the method is especially applicable to complex acoustic noise and interference environment occasions.

The embodiment of the application provides a robot sound localization method and a robot. A two-dimensional microphone array is arranged on the robot, and the method comprises the following steps: calculating a first sound energy value obtained by a first microphone according sound data collected by the first microphone and coming from a target sound source; calculating a second sound energy valueobtained by a second microphone according to sound data collected by the second microphone and coming from the target sound source; and determining the orientation interval of the target sound sourcerelative to the robot according to the energy ratio of the first sound energy value and the second sound energy value and the positional relationship between the first and second microphones. In theembodiment of the application, whether the target sound source is located in front of or at the back of the robot can be judged, and further the true position of the target sound source is accuratelylocalized.