365 results about "Surround sound" patented technology

The invention relates to a sound pressure adjusting method and system based on a human body induction sound box. The method comprises the following steps: acquiring user motion data through a human body induction sensor, and performing triangulation positioning analysis on the user motion data through an MCU (Microprogrammed Control Unit) chip to obtain position coordinate data and motion track data; inputting a sound field analysis model in the DSP chip for characteristic analysis to obtain surrounding sound field characteristic parameters; the method comprises the following steps: performing multichannel separation and time domain equalization processing on an original audio signal by a DSP chip to obtain a multichannel preprocessed signal; inputting into a DSP chip for sound pressure balance calculation to obtain an initial sound channel gain control parameter; performing power amplification on the multichannel pre-processed signal, and driving a loudspeaker array to output a surround sound signal; and the DSP chip dynamically optimizes the initial sound channel gain control parameter to obtain a target sound channel gain control parameter. According to the invention, real-time optimization and dynamic updating of sound pressure parameters are realized, and the response speed of the human body induction sound box to environmental changes is improved.

The invention discloses a spatial audio system, an audio processor and a virtual surround sound conversion method for stereo loudspeaker playing equipment. The method for converting spatial audio into virtual surround sound on the premise of not increasing the number of sound channels comprises the following steps: receiving initial audio stream data; performing space rendering operation, namely presetting a virtual space, and setting the orientation of a virtual ear in the virtual space; simulating sound propagation of the audio in the virtual space by using an HRTF algorithm, and simulating sound received by ears and propagated in the virtual space; analyzing the sound difference received by the left and right ears; estimating the position of the virtual sound source in the virtual space according to the sound difference received by the left and right ears; after spatial rendering is completed, the audio is recoded into a virtual surround sound audio containing spatial position information. By simulating the sound field and the environmental response, the user can feel the positioning and environmental feeling of the audio source in the virtual space, and the immersion and reality of the audio experience are enhanced.

The invention provides a control method and device of a vehicle-mounted external loudspeaker and a vehicle-mounted external loudspeaker system. The control method comprises the following steps that in response to starting of a vehicle-mounted loudspeaker box mode, the relative position relation between a user and a vehicle is obtained at a preset time interval, and the vehicle is provided with a plurality of vehicle-mounted external loudspeakers making sounds outwards; determining a target loudspeaker and a corresponding sound channel from the plurality of vehicle-mounted external loudspeakers at least based on the relative position relationship; and controlling each target loudspeaker to play the audio data of the corresponding sound channel. The invention provides a mode of taking the vehicle as a large mobile sound box capable of providing a surround sound field, and the provided surround sound field can be adjusted according to the relative position relationship between the user and the vehicle, so that the hearing effect of the user when using the vehicle-mounted sound box is improved, the application scene of the vehicle is expanded, and the user experience is improved.

The invention provides a compensation method and system for a high-precision space sound scene of an earphone, and is applied to the field of data processing. The preset microphone array is used for capturing the environment sound data in real time, dynamic EQ compensation is carried out according to the environment type, the intelligent earphone is helped to adapt to sound scenes in different environments, the tone quality stability and the environment adaptability are improved, meanwhile, the unique space sound scene of a user is constructed according to the music type and the frequency response, and the user experience is improved. In combination with dynamic EQ compensation, sound effect setting can be adjusted in real time according to the level and type of environmental noise, a user can obtain consistent music experience in different environments, immersion is enhanced, dynamic sound source positioning and sound field reconstruction are carried out based on a head related transmission function, and simulation volume is transmitted into ear canals, so that the user experience is improved. The head movement of the user is tracked in real time, audio rendering is adjusted, the omnibearing surround sound effect can be achieved, and more real and immersive music experience is provided for the user.

Example techniques relate to primary-ambient playback of surround audio by audio playback devices. Example playback devices described herein may include multiple speakers, such as a forward-firing audio transducer and side-firing audio transducers. Using example techniques, such playback devices may perform primary-ambient decomposition to separate surround channels into primary′ and ambient channels. The playback devices play back the ambient channel(s) via the side-firing transducers and the primary channel via the forward-firing transducer.

The invention relates to a main sound device and a sound device control method, the main sound device and at least one auxiliary sound device form a surround sound system, and the main sound device comprises a controller configured to send a volume acquisition request used for requesting volume information of the auxiliary sound device; receiving first volume information, wherein the first volume information is used for indicating an output sound pressure level supported by the target auxiliary sound equipment; determining a target sound pressure difference, wherein the target sound pressure difference is a sound pressure level corresponding to the difference between the distance from the main sound box to the user and the distance from the target auxiliary sound box to the user; based on a first audio signal corresponding to the main sound box, the current output sound pressure level of the main sound box, a second audio signal corresponding to the target auxiliary sound box, the first volume information and the target sound pressure difference, determining a third audio signal played by the main sound box based on the current output sound pressure level and a fourth audio signal played by the target auxiliary sound box based on the target output sound pressure level, the sound pressure level when the third audio signal reaches the user and the sound pressure level when the fourth audio signal reaches the user meet the consistency condition.

A headrest apparatus, a method, and a computer program product is provided for providing surround sound experience to user. The headrest apparatus receives an audio portion of a media content from an electronic device. The headrest apparatus determines a plurality of audio channel signals from the received audio portion. The determined plurality of audio channel signals includes at least a first set of audio channel signals. The headrest apparatus further controls a first audio rendering device, embedded at a first position in the headrest apparatus, to output a first audio channel signal of the first set of audio channel signals. The headrest apparatus further controls a second audio rendering device, embedded at a first position in the headrest apparatus, to output a second audio channel signal of the first set of audio channel signals.

The utility model belongs to the technical field of sofas, and particularly relates to a sound equipment surrounding sofa which comprises a sofa body, a sound equipment group, a woofer and a power amplifier, the sound equipment group is arranged in the sofa body, and the sofa body is arranged in a semi-surrounding structure; the sound equipment group comprises a plurality of full-frequency loudspeakers which are respectively arranged at two ends and the middle part of the sofa body; the woofer is arranged at the lower end in the sofa body; the power amplifier is arranged at the lower end of the interior of the sofa body, the sound set and the woofer are both connected with the power amplifier, and the power amplifier is connected with an external power supply, so that the sound set and the woofer are integrated in the sofa body, the requirement for an independent loudspeaker is eliminated, and precious indoor space is saved; the full-frequency horns are arranged at the two ends and the middle of the sofa body respectively, the surrounding sound effect is formed on the sofa body, the bass horns are closer to the bottom of the sofa body, bass can be reflected on the ground, and the bass effect is enhanced.

The invention relates to vehicle cabin simulation for audio tuning and testing. A method of simulating a vehicle cabin for audio tuning and / or testing and a corresponding system, the method comprising obtaining (17) and storing (20) 3D impulse responses corresponding to individual loudspeakers in the vehicle cabin to be simulated. At a location remote from the vehicle, a multi-channel input audio stream (22) is generated and the individual channels are processed (23) by a real-time convolution process to create an audio stream in surround sound format as output. An audio stream output (24, 32), e.g. In a panoramic sound format, may be decoded (33) and played back in the audiometry room so that a tuning engineer may adjust parameters of the input audio stream (22, 28) delivered in real time to the simulated environment listening experience. In this way, the parameters can be optimized and applied back to the sound system of the real-world vehicle.

A method of simulating a vehicle cabin for audio tuning and / or testing. The method includes obtaining and storing a 3D impulse response corresponding to each speaker within the cabin of a vehicle to be simulated. The method includes at a location remote from the vehicle, in real-time, applying convolution processing on each channel of a multichannel audio stream based on the corresponding 3D impulse response. The method includes outputting a surround sound format audio stream.

The present disclosure relates to a method and system for calibrating a loudspeaker system in an environment (1). The loudspeaker system comprises an audio device (10) with a first and second loudspeaker arranged with a predetermined horizontal separation. The method comprises the steps of emitting (S2a, S2b) a first and second calibration audio signal from the first and second loudspeaker (11) of the audio device (10), wherein the second calibration audio signal is distinguishable from the first calibration audio signal. The method further comprises receiving (S3a, S3b), with a first external microphone (20) the first and second calibration audio signal, determining (S4) the position of the first external microphone (20) relative to the audio device (10) and calibrating (S8) the loudspeaker system based on the determined position of the first external microphone (20).

Surround sound systems can dramatically expand the size of a user's sound field. Much surround sound content is mixed in a simplistic way where the front audio is copied to the rear, at a lower volume. It can be difficult for users to appreciate the value proposition of a surround sound system without more compelling spatially complex content. Quantifying surround sound complexity of various content items based on an audio spatial complexity scoring system can address this issue. Algorithms can be implemented to determine an audio spatial complexity score based on audio channels of a content item. Large catalog of content items can be analyzed, and audio spatial complexity scores can be associated with various content items. If a user has a surround sound system, content items with a high audio spatial complexity can be retrieved or recommended to the user to demonstrate the surround sound system's value better.

The invention relates to the technical field of virtual reality teaching, and discloses a children's music immersive learning system using a virtual reality technology, which creates an immersive music world for children by constructing a three-dimensional virtual reality environment and dynamically simulating musical instruments and music elements, and significantly enhances the immersion and interestingness of learning. The immersive audio experience module brings a surrounding sound effect, so that the reality and interactivity of music learning are improved; the intelligent interactive teaching module uses multiple interactive modes to enable children to interact with music in a virtual space, and the learning effect and playing skills are fed back and improved in real time; the interactive classroom and remote teaching module breaks space-time limitation, realizes real-time interaction between teachers and students, and provides personalized comprehensive guidance; the evaluation module and the artificial intelligence personalized teaching module provide targeted guidance and content customization according to the child performance and the learning progress, and further improve the learning efficiency and pertinence.

An experience sharing system for sharing an experience with others using VR and a method thereof includes a VR recorder that records a surrounding environment image, a user response image, and a surrounding sound of a first user to generate experience content, a VR player that plays and provides the experience content to a second user, and a data processing device connected to the VR recorder and the VR player over a communication network. The data processing device pre-analyzes the experience content received from the VR recorder to classify a category, adds an image matched with the classified category to the experience content, stores the experience content to which the image is added in a DB, and accesses the experience content from the DB depending on a request of the VR player and transmits the accessed experience content to the VR player.

Embodiments of the invention relate to a method and device for adaptive Head Related Transfer Function (HRTF) individualization for binaural rendering through headphones, earphones or crosstalk-cancelled speakers. The Adaptive HRTF individualizer (AHI) can simplify the complicated problem of custom tailoring an HRTF to a user via a GUI (graphical user interface), and can incorporate a single controller (e.g. a slider) that controls the selection of filters that allow the listener to virtualize sound sources at desired locations through any binaural rendering system. The slider allows cycling through processed HRTFs that are a composite of deconstructed measured filters with reconstructed cues such as interaural time difference (ITD) and interaural level difference (ILD). The deconstructed filters are analyzed and pre-processed enabling a smooth interpolation of the filters in the time domain prior to the addition or reconstruction of cues into the filter itself. Expanding this procedure for a single location into multiple locations enables a customized and accurate listening experience for multichannel content virtualized through any binaural rendering system. This can be done for a multitude of speaker locations to customize and render any surround sound content.

Methods and apparatus for acquiring and encoding omnidirectional surround sound are described herein. An exemplary omnidirectional surround microphone may include a first microphone capsule oriented substantially toward a first vertex of a conceptual tetrahedron, a second microphone capsule oriented substantially toward a second vertex of the conceptual tetrahedron, a third microphone capsule oriented substantially toward a third vertex of the conceptual tetrahedron and a fourth microphone capsule oriented substantially toward a fourth vertex of the conceptual tetrahedron.

In one embodiment, an A / V interconnection architecture is provided that includes a TX A / V endpoint that supports native audio and stereo down-mixed audio on separate networks. The TX A / V endpoint outputs native audio over a video network to an RX A / V endpoint coupled to an A / V sink component that is capable of processing or outputting the native audio, and produces a stereo down-mixed version of the native audio which is output over an audio network to an audio system coupled to an audio sink component that is incapable of handling the native audio. In another embodiment, an A / V interconnection architecture is provide that enables expandable surround sound. If the number of audio channels for a type of surround sound is less than or equal to a number of local amplified output channels, surround sound is provided using only local unpowered speakers. If the number exceeds the number of the local amplified output channels, surround sound is provided using both the local unpowered speakers and one or more add on devices accessible over the audio network.

A digital assistant function is provided to individual users even when a primary device having the digital assistant function is at a location away from a hand of a user. An information processing device that relays sound data to a primary device that executes a digital assistant process includes: a sound acquiring unit that acquires surrounding sounds as sound data; a destination device determination unit that determines a destination primary device which is the primary device that is a destination of the sound data; a transmitting and receiving unit that transmits the sound data to the destination primary device and receives, from the destination primary device, a result of a digital assistant process executed depending on the sound data as a reply; and a reply presentation unit that presents the reply received at the transmitting and receiving unit.

The application discloses an implementation method and system of an intelligent earphone interrupt function based on a positioning technology. The method comprises the following steps: establishing a connection between an intelligent earphone and a mobile host terminal and synchronizing a clock, and determining a relative position of multiple parties in space; calculating a distance difference by receiving sound data, and solving three-dimensional coordinates and distance information of a sound source based on a hyperbolic positioning principle; determining an interrupt priority value in combination with a semantic analysis result of the sound data, and sending an intelligent reminder to a user according to the interrupt priority value. The application realizes accurate spatial perception and intelligent importance judgment of surrounding sound events, enables the intelligent earphone to actively provide an interrupt type reminder at a critical moment, and improves the intelligence and practicability of human-computer interaction.

The present invention provides an audio processing method, apparatus, system, and storage medium. First, the wireless headphone terminal receives a to-be-presented audio signal sent by a playback device through a wireless transmission manner. The to-be-presented audio signal includes an audio signal rendered and processed by the playback device, i.e., a first audio signal, and an audio signal to be rendered, i.e., a second audio signal. Then, if the to-be-presented audio signal includes the second audio signal, the wireless headphone terminal performs rendering processing on the second audio signal to obtain a third audio signal. Finally, the wireless headphone terminal performs subsequent audio playback according to the first audio signal and / or the third audio signal. Thereby, the technical effect that the wireless headphones can present high-quality surround sound and panoramic sound effects is achieved.

This product is a cartilage conduction earphone that is used by placing ear hooks over the ears and abutting the cartilage conduction speakers at both ends against the ear cartilage at the entrance to the ear canal. The product can also be used as a sound collector that amplifies surrounding sounds to make them easier to hear. By abutting the convex parts on the inner surface of the cartilage conduction speaker against the user's ear cartilage, the product prevents sound from diffusing and efficiently transmits vibrations emitted by the vibrator to the ear cartilage.

The present invention relates to a method for managing the low frequency content obtained by a loudspeaker system comprising a plurality of loudspeaker devices, such as a surround sound loudspeaker system, wherein each individual loudspeaker device has a known response as a function of frequency under anechoic conditions comprising a phase response, the method comprising the steps of providing a plurality of loudspeaker devices (1, 2, 3, 4) and for each of said plurality of loudspeaker devices (1, 2, 3, 4) providing the corresponding phase response as a function of frequency obtained under anechoic conditions and for each of the individual loudspeaker devices (1, 2, 3, 4) inserting a filter device (5, 6, 7, 8) in the signal chain to the corresponding loudspeaker device (1, 2, 3, 4), where the individual filter device (5, 6, 7, 8) is configured such that the resulting phase response of each individual loudspeaker device (1, 2, 3, 4) under anechoic conditions is substantially the same for all of the loudspeaker devices (1, 2, 3, 4). The invention further relates to a loudspeaker system implementing the method of the invention.

1. The name of the design product: sound box support (adapt to KEF, Bowers & Wilkins). 2. The use of the design product: used for floor stand of surround sound box and sound. 3. The design points of the design product: in shape. 4. The picture or photo that can best show the design points: design 1 perspective view. 5. Design 1 is specified as the basic design.

Embodiments of the present invention disclose a method, apparatus, electronic device, and storage medium for audio signal mixing and playback. In these embodiments, correlation analysis is performed on the left and right channel signals in a two-channel signal, and a specific signal processing strategy is determined based on the analysis results. By employing targeted processing methods for the two-channel signal in different states, the accuracy of signal processing is improved. Finally, when played back in a 5.1-channel surround sound system, the sound and image are naturally coherent, achieving a good sense of surround and envelopment.

The invention discloses an audio virtual surround processing method, a computer program product and electronic equipment. The audio virtual surround processing method comprises the following steps: acquiring a stereo signal containing two channels as an original audio, and separating an initial middle sound and an initial surround sound corresponding to the stereo signal; in the initial middle sound, first azimuth information corresponding to the two channels is extracted, and target middle sound corresponding to the two channels is generated based on the first azimuth information; extracting second azimuth information respectively corresponding to the two channels from the stereo signal, and generating target surround sounds respectively corresponding to the two channels based on the second azimuth information; the second azimuth information is related to the initial surround sound; and performing virtual surround processing on the original audio based on the initial middle sound, the initial surround sound, the target middle sound and the target surround sound to obtain a multi-channel audio signal serving as a target audio. The target audio can keep the sound image position of the original audio as much as possible.

A method of adapting an automotive audio system to support surround sound comprises: configuring an application program for creation of an audio track object that specifies passthrough mode as a playback mode, wherein the application program is installed to operate under an operating system that is not configured for surround sound; configuring a framework of the operating system with a bypass past a mixer of the operating system, wherein the bypass allows surround-sound data of the audio track object to bypass the mixer; and configuring a hardware abstraction layer with a separate channel for the surround-sound data received from the operating system, wherein the hardware abstraction layer processes the surround-sound data before providing the processed surround-sound data to a decoder.

The application provides a workshop machine noise adsorption shielding room, which comprises a base, side plate assemblies are arranged on the top of the base, noise reduction assemblies are arranged in the side plate assemblies, drying assemblies are fixedly installed on the top of the side plate assemblies and extend into the noise reduction assemblies, a top plate is arranged on the top of the side plate assemblies, a hanging plate is fixedly installed on the bottom of the top plate, two groups of surrounding sound insulation structures are arranged on the hanging plate, sound insulation curtains are rolled on the surrounding sound insulation structures, and a supporting assembly is slidably installed on the top of the base; the surrounding sound insulation structure comprises a folding assembly and a transmission assembly, and the drying assembly comprises a cross arm, a sleeve, a gas guide port and an electric heating rod. The shielding room realizes the double-layer sound insulation and noise reduction effect through the surrounding sound insulation structure, the sound insulation structure can be automatically carried out and rolled up, the noise reduction of the equipment machine is met, and the actual regulation and control of the personnel on the machine are not hindered.

To provide an "audio signal processor" for down-mixing a surround audio signal so as to obtain an excellent sound image feeling.SOLUTION: This device is provided with a pseudo surround audio signal generating part 1 for generating a surround audio signal SigA of 7.1. 2ch from an inputted audio stereo signal SigIN of 4ch, a signal processing part 2 for processing the surround audio signal SigA and outputting it as a signal SigB for down mix, and a down mix part 3 for synthesizing the signal SigB for down mix and outputting a stereo audio signal SigOUT of 2ch. The signal processing unit 2 combines the input audio signal of each channel of the SigA with the audio signal obtained by convolving the head-related transfer function from the speaker corresponding to the audio signal to the listener at a ratio corresponding to the position of the speaker, and outputs the combined signal as the audio signal of the SigB.SELECTED DRAWING: Figure 1

The invention provides an audio signal transmission device, audio equipment and an audio signal playing method. The audio signal transmission device comprises a receiving module used for receiving a sound source signal; the frequency division module is used for conducting frequency division on the sound source signal to obtain a first audio signal and a second audio signal, the frequency of the first audio signal is smaller than a preset frequency threshold value, and the frequency of the second audio signal is larger than or equal to the preset frequency threshold value; the sending module is used for sending the first audio signal to a first audio playing device and sending the second audio signal to a second audio playing device, the bass quality of the first audio playing device is better than that of the second audio playing device, and the bass quality of the second audio playing device is better than that of the first audio playing device. The high pitch quality of the first audio playing device is lower than that of the second audio playing device. According to the embodiment of the invention, good surround sound effect and bass performance can be realized.

The utility model discloses a near-field surround sound system, comprising a support main body, two ends of which are provided with connecting parts; the clamping sub-frame is arranged adjacent to the upper end of the connecting part; the auxiliary clamping frame is connected with the two side faces of the support body, and the radian of the auxiliary clamping frame corresponds to the radian of the two sides of the head; the flexible pad is arranged on the end faces, attached to the head, of the support body and the auxiliary clamping frame; the number of the near-ear loudspeaker modules is two, and the near-ear loudspeaker modules are respectively connected with the two connecting parts; each group of near-ear loudspeaker module comprises a plurality of loudspeaker units; when a user wears the support body, the connecting part is used for enabling the near-ear loudspeaker module not to make contact with the ears of the user. Comprising a top loudspeaker module, the top loudspeaker module is connected with the support main body and is roughly arranged at the top end of the support main body, and the sound output end faces the head. And at least one of the two near-ear loudspeaker modules is provided with a microphone.