Aac Technologies Pte. Ltd.

Aac Acoustic Technologies (shanghai) Co., Ltd.

Aac Acoustic Technologies (shenzhen) Co., Ltd.

Aac Microtech (changzhou) Co, , Ltd.

Aac Acousitic Technologies (shanghai) Co., Ltd.

Zheng Xiang

Xuan Guo

Xiang Lu

Tao Li

Yajun Zheng

Hanlin Deng

Liang Jiang

Xiuyue Wang

Bing Xie

Yingming Qin

Yongyong Chen

Zengyou Meng

Chengyan Sang

Wensheng Xu

Zhongqing Cao

A method for compressing and encrypting haptic effect data, a system, and related devices are provided. Compared with related technologies, in the method for compressing and encrypting the haptic effect data of the disclosure, the encryption and compression manners are respectively adopted for processing from the data obtaining stage to the playing stage, so that the storage space of the haptic effect data is saved when the data is stored, and the original data can be restored when the data is played, thus ensuring the playing effect. In addition, the encryption algorithm is used for data encryption during storage, which can ensure the security of the original haptic effect data during storage.

Method for compressing and encrypting haptic effect data, system, and related devices

Provided are a method and a system for generating a haptic feedback effect, and a related device. The method includes: acquiring a training dataset comprising a video information and an audio information; performing a data cutting on the training dataset to obtain cut data; mapping the cut data into a haptic feedback information using a preset artificial intelligence according to a network coefficient; and outputting a haptic feedback effect according to the haptic feedback information. Compared with related art, the method for generating the haptic feedback effect of the present application incorporates the generation of haptic feedback information based on the artificial intelligence, so that manual operations are reduced during the generation process of haptic feedback effect, and the network coefficients are optimized to obtain the desired haptic feedback effect based on the pre-existing artificial results as the training set, thereby improving the vibration feedback experience in practical applications.

Method and system for generating haptic feedback effect, and related device

The invention provides a motor nonlinear system modeling method including steps of: obtaining a chirp signal of a first frequency band, and a chirp signal of a second frequency band; exciting the motor by using the chirp signal; obtaining a higher harmonic frequency response of the first frequency band; exciting the motor by using the chirp signal of the second frequency band; obtaining a higher harmonic frequency response of the second frequency band; obtaining a higher harmonic frequency response by splicing the higher harmonic frequency response of the first frequency band and the higher harmonic frequency response of the second frequency band in the frequency domain. The higher harmonic frequency response of the working frequency of the motor is a nonlinear system model of the motor. By virtue of the method provided by the present invention, the accuracy of motor modeling is effectively improved.

Nonlinear system modeling method for motor and modeling device

The present invention provides a linear motor driving voltage generation method and related devices. The object is to use the driving voltage generated by the driving voltage generation method to effectively control the linear motor to express the vibration effect in a specific direction. The method of an embodiment of the present invention includes: determining the system gain and current phase of the linear motor system, obtaining the target acceleration and amplitude of initial value of the linear motor, calculating the driving based on the target acceleration and the initial value amplitude, the system gain, and the current phase.

Driving voltage generation method of linear motor

A vibration control method, a vibration control device, and a non-transitory computer-readable storage medium are provided. Target effect parameters are obtained in a preset vibration effect design model with reference to a haptic effect demand index, effect parameters in the vibration effect design model including a granularity parameter, a sharpness parameter and a hardness parameter. A vibration control signal is generated based on the target effect parameter. The actuator is controlled to vibrate based on the vibration control signal. With the implementations of the present disclosure, the vibration control models of the actuator can be adaptively designed based on different haptic effect demand scenarios, thereby ensuring the diversity of haptic effects and the adaptability to the scenarios. A variety of perception factors are considered in the vibration effect of the actuator, thereby providing the user with a more complex haptic feedback experience.

Vibration control method, vibration control device, and non-transitory computer-readable storage medium

Provided are a method for generating a haptic feedback signal, an electronic device, and a storage medium. The method includes: acquiring an initial haptic feedback signal; mapping an initial haptic feedback signal from a time domain to a frequency domain to obtain an initial spectrogram of the initial haptic feedback signal in the frequency domain; adjusting an amplitude value of a harmonic component of any frequency band in the initial spectrogram to obtain a target spectrogram; and mapping a signal corresponding to the target spectrogram from the frequency domain to the time domain to obtain a target haptic feedback signal. In the present application, a large number of haptic feedback signals with different haptic feedback effects may be obtained by adjusting the amplitude value of the harmonic component of any frequency band in the initial spectrogram, thereby effectively improving the richness of the haptic feedback signals.

Method for generating haptic feedback signal, electronic device, and storage medium

The present disclosure provides a vibrator driving method, including steps of: obtaining a preset vibration frequency and a resonant frequency of a target vibration motor; obtaining total harmonic distortion of the target vibration motor; obtaining at least one low distortion point of the target vibration motor according to the total harmonic distortion; obtaining a target vibration frequency according to a low distortion frequency of at least one low distortion point and the preset vibration frequency; driving the target vibration motor to vibrate according to the target vibration frequency. The present disclosure further provides a vibration driving system and a vibration driving equipment.

Vibrator driving method, vibration driving system, and vibration driving equipment

A method for compensating a signal of a motor includes acquiring an original signal and nonlinear parameters of the motor; calculating a compensation signal for the original signal according to the acquired nonlinear parameters; and loading the calculated compensation signal into the motor to excite the motor to vibrate. An electronic apparatus and a storage medium are also provided. In this method, the original excitation signal is compensated for nonlinearity according to the nonlinear motor parameters, and is then used for exciting the motor. Therefore, the actual vibration effect can be closer to the expected effect as designed, which can bring more desirable tactility experience.

Method for compensating signal of motor, electronic apparatus and storage medium

The present invention provides a driving voltage generation method of a linear motor, and linear motor driving voltage generation device performing same. The driving voltage voltage generation method of a linear motor includes the following. Define the displacement waveform of the linear motor's vibrator within a preset period and the displacement waveform is an asymmetrical waveform. Calculate the voltage waveform corresponding to the linear motor in the preset period according to the displacement waveform. The present invention is designed to use the driving voltage generated by the driving voltage generation method to effectively control the linear motor to express the vibration effect in a specific direction.

Driving voltage generation method, and linear motor driving voltage generation device performing same

Provided a haptic feedback method, including: step Sof algorithmically training an audio clip containing a known audio event type to obtain an algorithm model; and step Sof obtaining an audio, identifying the audio by the algorithm model to obtain different audio event types in this audio, matching, according to a preset rule, the audio event types with different vibration effects as a haptic feedback and outputting the haptic feedback. Compared with the related art, the present haptic feedback method provides users with real-time haptic feedback when applied to a mobile electronic product, thereby achieving excellent use experience of the mobile electronic product.

Haptic feedback method

A method for adaptive motor control includes acquiring current parameters in an operation process of the motor at a current moment; determining a type of a region in which the motor operates at the current moment according to the current parameters; triggering a corresponding motor model according to the type of the region in which the motor operates at the current moment; and inputting the current parameters into the corresponding motor model, generating control parameters for motor operation according to the current parameters, and controlling the operation of the motor according to the control parameters for motor operation. An apparatus and a computer-readable storage medium are also disclosed. In comparison with the conventional motor control which uses the single nonlinear model, the motor control method disclosed herein can greatly improve the reliability of the control.

Method and apparatus for adaptive control of motor, and storage medium

The invention provides a vibration controlling method which amplifies a steady state voltage and generates a first voltage signal for controlling the vibrator to accelerate vibration to a target vibration amplitude lower than the steady state vibration amplitude, and then attenuates the startup voltage to the steady state voltage to generate a second voltage signal for controlling the vibrator to vibrate from the target vibration amplitude to the steady state vibration amplitude. Through the implementation of the invention, the steady state voltage is amplified and used as an excitation voltage of the acceleration section of vibrator vibration, and then it steadily decreases to the steady state voltage, which effectively shortens the acceleration time for the early stage of the vibrator vibration response and reduces the hysteresis of the vibrator vibration fed back to the user.

Vibration controlling method for vibrator, control device and computer readable storage medium

A motor parameter tracking method, which can dynamically track motor parameters includes: exciting, with a voltage excitation signal, a motor to operate, and acquiring at least one actual voltage across two terminals of the motor and an actual current flowing through the motor in an operating state; modelling a voltage error of the motor based on the at least one actual voltage and the actual current to obtain a voltage error function of the motor; and performing iteration on at least one motor parameter based on the voltage error function and a preset iterative step. With the method, the difference between different batches of motors can be adaptively adjusted, and parameter changes caused by a motor temperature, a motor posture and the like can be dynamically tracked. All motor parameters are provided with a same step, which reduces the difficulty of parameter adjustment and the sensitivity of algorithms to parameters.

Motor parameter tracking method and motor parameter tracking system

The present disclosure provides a method for detecting a bandwidth of a linear vibration motor, including a linear vibration motor which comprises a housing and a motor vibrator. The method includes the following steps: step S: setting a target displacement level of the linear vibration motor; step S: measuring a displacement frequency response curve of the motor vibrator with reference to the target displacement level; step S: comparing the displacement frequency response curve obtained in step Swith a preset standard target displacement frequency response curve, determining whether the displacement frequency response curve is qualified, and if it is qualified, entering step S; step S: measuring a bandwidth of the linear vibration motor.

Method for detecting bandwidth of linear vibration motor

An actuator excitation signal processing method includes the step of obtaining original excitation signal. An encrypted excitation signal was obtained by encrypting the original excitation signal. Vibration waveforms generated by the encrypted excitation signal and the original excitation signal while acting on the actuator are same. The encrypted excitation signal is used to drive the actuator to vibrate. The actuator excitation signal processing method can effectively solve the problem that the excitation signal might be stolen by encrypting the original excitation signal. In addition, an actuator signal processing device, a computer equipment and a kind of storage medium are also proposed.

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Shenzhen, China

Zheng Xiang