Systems and methods for generating haptic output for enhanced user experience

Abstract

Systems and methods for generating a haptic output from an audio signal having a continuous stream of sampled digital audio data are provided. A haptic processing system receives the digital audio data, analyses the digital audio data for processing and extracts haptic signals for generating a haptic effect through an actuator. The method includes passing the digital audio signal on through one ormore dynamic processors, adjusting the dynamic range of the digital audio signal, extracting the signal envelope of the audio data, synthesising low-frequency signals from the extracted signal envelope, and enhancing the low-frequency content using a resonator. The haptic output is generated by mixing the digital audio signal with outputs from the different modules of the haptic processing system. An analytics module monitors, controls and adjusts the processing of the digital audio signal at the noise gate module, the compressor module and the envelope module to enhance the haptic output. The processed digital signal passes on through a low pass filter, a limiter, and a bell filter to remove unwanted frequencies, gain, and extend the frequency response respectively. The output signal isprovided to a Digital-to-Analog (D / A) converter and finally fed to the actuator for producing haptic output. A detection module receives a first input from the output of the bell filter and the secondinput from the input audio signal, probes the signals at the first and the second inputs, and in the absence of the audio signal at both the inputs disables the haptic processing system and enters power saving mode.

Description

technical field [0001] The present invention relates to haptic processing systems that generate haptic responses. More specifically, the present invention relates to digital audio signal processing for generating haptic output in actuators. Background technique [0002] Haptics generally refers to the sense of touch provided to a user as a feedback force or vibration on a user interface of an electronic device. Feedback forces can provide information to users. As technology has advanced, user interfaces are now integrated with haptic interfaces that provide haptic feedback. Mobile devices, gaming devices, and automobiles are now integrated with haptics for a better user experience. An important element in providing user feedback is the processing of the audio signal to convert the audio signal into a haptic response. The haptic response drives the actuator to provide vibration in response to a touch on the user interface. Another application of haptics is to provide use...

AI Technical Summary

Problems solved by technology

Also, some low frequency components are present but are eliminated in the filtering and processing stages

This results in a deprecated user experience

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