WO2023093333A1 - Procédé et appareil de génération de signal de vibration, dispositif électronique et support de stockage - Google Patents

Procédé et appareil de génération de signal de vibration, dispositif électronique et support de stockage Download PDF

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WO2023093333A1
WO2023093333A1 PCT/CN2022/124491 CN2022124491W WO2023093333A1 WO 2023093333 A1 WO2023093333 A1 WO 2023093333A1 CN 2022124491 W CN2022124491 W CN 2022124491W WO 2023093333 A1 WO2023093333 A1 WO 2023093333A1
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audio
time period
energy
average energy
relative
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PCT/CN2022/124491
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English (en)
Chinese (zh)
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刘兵
刘钰佳
杨鑫峰
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歌尔股份有限公司
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/16—Sound input; Sound output

Definitions

  • the present application relates to the technical field of vibration driving, and specifically relates to a vibration signal generation method, device, electronic equipment, and storage medium.
  • Linear Resonant Actuator is a transmission device that directly converts electrical energy into linear motion mechanical energy without any intermediate conversion mechanism. It is usually driven by alternating current, and the energized coil is subjected to ampere force in a magnetic field to drive the motor. vibration.
  • linear motors have been widely used in various vibration occasions of consumer electronics, especially games and AR/VR products, due to their advantages of strong vibration, richness, crispness, and low energy consumption.
  • developers In order to enhance the user experience of games and AR/VR products, developers usually convert the input audio and other signals to generate the vibration driving signal of the linear motor, and drive the linear motor to generate vibration, so as to match the input audio Vibration feedback, that is, to achieve sound-vibration synchronous output, so as to bring users a dual experience of auditory and tactile interweaving, and enhance the richness and playability of game interaction.
  • the present application proposes a vibration signal generation method, device, electronic equipment and storage medium, which can detect rhythm in real time and generate vibration signals synchronously.
  • the embodiment of the first aspect of the present application proposes a vibration signal generation method, including:
  • the first time period is smaller than the second time period
  • a preset vibration signal is generated according to a preset rule.
  • the end time of the first time period and the second time period are the same.
  • detecting the average energy of the first audio in the first time period before the current moment includes:
  • Detecting the average energy of the second audio in the second time period before the current moment including:
  • determining the relative increment of audio energy in the first time period relative to the second time period includes:
  • the preset vibration signal is generated according to preset rules, including:
  • Vibration signals with different amplitudes are generated according to the relative increment of the audio energy.
  • the preset threshold is greater than or equal to 1.
  • the duration of the first time period is two to three times the duration of the second time period.
  • the embodiment of the second aspect of the present application provides a vibration signal generation device, including:
  • the acquisition module is used to acquire audio data
  • a detection module configured to detect the average energy of the first audio in the first time period before the current moment, and the average energy of the second audio in the second time period; the first time period is smaller than the second time period;
  • a determining module configured to determine a relative increment of audio energy in the first time period relative to the second time period according to the first audio average energy and the second audio average energy;
  • a generating module configured to generate a preset vibration signal according to a preset rule if the relative audio energy increment is greater than or equal to a preset threshold.
  • the embodiment of the third aspect of the present application provides an electronic device, including a memory, a processor, and a computer program stored on the memory and operable on the processor, and the processor runs the computer program to Implement the method as described in the first aspect. .
  • the embodiment of the fourth aspect of the present application provides a computer-readable storage medium, on which a computer program is stored, and the program is executed by a processor to implement the method described in the first aspect.
  • the vibration signal generation method utilizes the characteristic that the average energy of the audio frequency changes more slowly in a longer period of time than the average energy in a shorter period of time, and through the first time period of different lengths and the audio average energy detection in the second time period, two audio average energies with different amplitude change speeds can be obtained, and by calculating the relative increment of audio energy in the first time period and the second time period, detect the audio frequency in a short period of time Whether there is an approximate step change in the ratio of the average energy to the average energy in a long period of time, through the detection of this step pulse, the audio rhythm detection in the case of random input of the audio amplitude can be realized, and when the rhythm is generated Generate preset vibration waveforms, realize real-time conversion of audio signals to vibration signals, and output vibration feedback consistent with the audio rhythm. Moreover, this method does not require any preprocessing, and the audio-vibration conversion process is performed in real time, so online vibration waveform generation can be realized, which is suitable for games or work scenarios
  • FIG. 1 shows a schematic flow diagram of a method for generating a vibration signal provided in an embodiment of the present application
  • FIG. 2 shows a schematic diagram of a vibration signal generation method provided by an embodiment of the present application
  • Fig. 3 shows a schematic flow diagram of the calculation process of audio average energy in the embodiment of the present application
  • FIG. 4 shows a schematic diagram of the audio data of gunshots with large differences in the amplitude of 6 sounds in a game collected in the embodiment of the present application;
  • FIG. 5 shows a schematic diagram of the audio average energy in the first time period obtained by using the vibration signal generation method provided by this embodiment
  • Fig. 6 shows a schematic diagram of the audio average energy in the second time period obtained by using the vibration signal generation method provided by this embodiment
  • Figure 7 shows a schematic diagram of the relative increment of audio energy relative to the audio average energy in the first time period obtained by using the vibration signal generation method provided in this embodiment relative to the audio average energy in the second time period (the upper limit of the figure is 10);
  • FIG. 8 shows a schematic diagram of a vibration signal obtained by performing real-time conversion processing on the audio data in FIG. 4 by using the vibration signal generation method provided in this embodiment
  • FIG. 9 shows a schematic structural diagram of a vibration signal generating device provided by an embodiment of the present application.
  • FIG. 10 shows a schematic diagram of an electronic device provided by an embodiment of the present application.
  • Fig. 11 shows a schematic diagram of a computer-readable storage medium provided by an embodiment of the present application.
  • This embodiment studies and analyzes the existing sound-vibration conversion technology, and finds that: 1) a real-time sound-vibration conversion processing method can be realized, for example, the energy of the input audio is detected, and then the detected energy and the set If the threshold is greater than the set threshold, a preset vibration waveform will be inserted. Although this method can realize real-time sound-to-vibration conversion processing, it is difficult to detect all vibrations with a fixed threshold because the amplitude of the input audio is random. Rhythm.
  • This method is an offline processing scheme, that is, the implementation process needs to input the overall audio information first, and then process it to generate a corresponding overall tactile vibration file, and then the audio file and the tactile vibration file can be played synchronously to generate a matching Sound-vibration synchronization experience.
  • the audio signal is generated in real time with the player's operation, and the complete information cannot be predicted in advance and converted into a vibration file in advance. Therefore, the above offline processing method cannot be applied to games and other scenes that require real-time audio-to-vibration conversion.
  • the embodiment of the present application proposes a vibration signal generation method, which can be realized by a vibration signal generation device, and can be specifically formed in an electronic device that requires real-time audio-vibration conversion (such as games such as VR/AR or On the working equipment), it can detect the audio energy in two time periods with different durations before the current time according to the audio data collected at the current time and before, and judge whether there is a rhythm according to the relative increment of the audio energy in the two time periods, And insert the preset vibration signal when the rhythm is generated, so that the real-time online conversion of audio signal to vibration signal can be realized, and the vibration signal matching the audio can be generated, and the real-time conversion sensitivity of audio-vibration can be controlled by controlling the sampling period .
  • real-time audio-vibration conversion such as games such as VR/AR or On the working equipment
  • the vibration signal generation method may include the following steps:
  • Step S1 acquiring audio data.
  • the audio data is generated in real time with the operation of the device user (such as a game player), and is closely related to the user's actual operation and the game or work scene. Usually, the overall audio data cannot be predicted in advance.
  • the audio data can be collected by radio equipment, converted into audio data that can be digitally transmitted and processed through digital conversion technology, and then transmitted to the vibration signal generating device of this embodiment. That is, the audio data is usually digital information that can be calculated and processed, and the audio data can be obtained in real time during the real-time audio-to-vibration conversion process.
  • the acquisition here can be actively acquired from the radio equipment, or passively received from the radio equipment.
  • the audio data after the audio data is acquired, in order to improve real-time performance and minimize delay, the audio data does not need to be processed, and subsequent steps can be directly performed. However, in order to obtain more accurate real-time data and facilitate subsequent calculations, the acquired audio data can also be smoothed and filtered first. During specific implementation, those skilled in the art may perform operations according to actual conditions, which is not specifically limited in this embodiment.
  • Step S2 detecting the average energy of the first audio in the first time period before the current moment, and the average energy of the second audio in the second time period.
  • the first time period is less than the second time period, specifically, the duration of the second time period can be set to 2-3 times the duration of the first time period, so that the audio average energy difference in the two periods is large enough to Useful for rhythm detection.
  • Values of the first time period and the second time period may be several milliseconds to tens of milliseconds, which may be set according to actual conditions, which is not specifically limited in this embodiment.
  • the first time period t m and the second time period t n may be set, and the first time period t m may be set to 10 ms; the second time period t n may be set to 20 ms.
  • the sampling period T s of the audio data can be set, and the audio data in the first time period t m and the second time period t n before the sampling point moment (that is, the current moment in the text) are collected every T s time interval.
  • the sampling period T s can be shorter than the first time period t m , preventing the audio data with rhythm from being collected only in the second time period t n which is longer in time, and because of the time buffering of the long period, its audio is averaged The energy is not much different from the average energy of the audio in the short first time period t m , thus resulting in missed detection.
  • the value of the sampling period T s can be set according to the actual situation. For example, a shorter period T s can be set to improve the sensitivity of audio-vibration conversion; a longer period T s can also be set, In order to improve the accuracy and processing speed of audio data detection.
  • detecting the average energy of the first audio in the first time period before the current moment may specifically include the following processing: calculating the first quantity of the first audio data in the first time period according to the preset sampling period; Calculate the average energy of the first audio in the first time period according to the first audio data and the first quantity.
  • detecting the average energy of the second audio in the second time period before the current moment may specifically include the following processing: calculating the second quantity of the second audio data in the second time period according to the preset sampling period; The audio data and the second quantity are used to calculate the average energy of the second audio in the second time period.
  • the value representing the audio signal is defined as audio energy, so as to facilitate calculation.
  • the audio average energy may be the average of the absolute value of the audio data, or the average of the square of the audio data, which is not specifically limited in this embodiment.
  • the audio energy can also be the energy of the audio signal wave (the actual audio signal wave can be determined according to the audio data, and then the energy of the audio signal wave can be calculated), which is not specifically limited in this embodiment.
  • the audio average energy P m within the time period t m can be calculated by the following formula (1) or formula (2).
  • the audio average energy P n within the time period t n can be calculated by the following formula (3) or formula (4).
  • the average energy of the audio is obtained by accumulating and averaging the audio data within a period of time, the detection process is simple, the calculation amount is small, the calculation time is short, and the real-time performance is stronger.
  • the end time of the first time period t m and the second time period t n are the same, and both are current sampling times. That is, when recording audio data, each audio data xi in the first time period t m and each audio data x j in the second time period t n ending at the current sampling time t can be recorded separately. In this way, setting the end time of the first time period t m and the second time period t n as the sampling time can ensure that the latest audio data is collected, the rhythm can be detected as early as possible, and the vibration signal is inserted as soon as possible after the rhythm is generated. To further enhance the real-time performance of audio-vibration conversion.
  • each audio data x j in t n is x, and the number of audio data in the first time period t m and the second time period t n is updated m as If the current moment t is less than the second time period t n and greater than the first time period t m , record each audio data x i in the first time period t m and each audio data x j in the 0-t time period , and the number n of audio data in the second time period t n is updated as In this way, some invalid calculations in the early stage can be reduced, the calculation speed can be further improved, and the real-time performance of audio-vibration conversion can be enhanced.
  • Step S3 according to the first audio average energy and the second audio average energy, determine the relative increment of audio energy in the first time period relative to the second time period.
  • the audio average energy in the first time period t m and the second time period t n with different lengths.
  • the change of the audio average energy in the longer second time period tn will be slower and slower than the change of the audio average energy in the shorter first time period tm . Therefore, when the audio energy has a sudden change, the audio average energy response in the shorter first time period t m is faster, while the audio average energy response in the longer second time period t n is slower, so that There is an approximate step change in the ratio of the two, so whether the approximate step change occurs can be used as a criterion for detecting whether the rhythm is generated.
  • the ratio k P m /P n of the average energy P m of the first audio frequency and the average energy P n of the second audio frequency, and determine whether the ratio k is greater than 1; if so, it indicates that the above-mentioned approximate step may exist Changes may be rhythmic, and the relative increase in audio energy in the first time period relative to the second time period can be determined as the value of the ratio k minus 1, that is, k-1; if not, it means that there is no such approximate step Basically, it can be assumed that there is no rhythm. In order to reduce the amount of calculation, the relative increment of the audio energy of the first time period relative to the second time period can be directly determined as 0.
  • Step S4 if the relative increase in audio energy is greater than or equal to a preset threshold, then generate a preset vibration signal according to a preset rule.
  • the variation of the above-mentioned approximate step is relative, and is only related to the sudden change ratio k of the audio average energy in the first time period tm relative to the audio frequency average energy in the second time period tn , and is related to The amplitude of the audio itself doesn't matter much. Therefore, by detecting this step pulse, the audio rhythm detection under the condition of random audio amplitude input can be realized. And it can judge whether the above-mentioned approximate step change occurs through the preset threshold of the relative increment of the average energy of the audio. In this way, the random audio amplitude caused by setting the threshold according to the absolute energy of the audio is avoided, and it is impossible to use a fixed threshold for rhythm. A matter of judgment.
  • the vibration signal generation device can determine rhythmic generation when the relative increment of audio energy is greater than or equal to the preset threshold, and generate a preset vibration signal (vibration wave) according to the preset rules, so as to realize the real-time conversion of the audio signal to the vibration signal , which in turn can output vibration feedback consistent with the detected audio rhythm.
  • a preset vibration signal vibration wave
  • the vibration signal generating device does not perform audio-vibration conversion, and then continues to collect audio data at the next sampling moment, continues to judge the rhythm, and when there is A corresponding vibration signal is generated when the rhythm is generated. This reciprocating operation until no audio data is received (such as the end of the game) at this startup.
  • the above-mentioned generation of preset vibration signals according to preset rules may include the following process: generating vibration signals of different shapes according to the relative increment of audio energy; generating vibration signals of different amplitudes according to the relative increment of audio energy vibration signal.
  • This embodiment can preset the vibration signal according to the specific scene of the game or work, and can compare the relative increment of the audio energy with the historical data, and set vibration signals of different shapes and amplitudes according to the comparison result. If the relative increment of energy differs greatly from the relative increment of audio energy calculated last time, a preset waveform different from that of last time can be generated. You can also set the amplitude of the vibration signal according to the specific value of the relative increment of the audio energy, that is, if the relative increment of the audio energy is large, you can set a vibration signal with a large amplitude; if the relative increment of the audio energy is small, you can set A vibration signal with a small amplitude.
  • the vibration signal generating device receives the input audio data, sets the first time period and the second time period, and the second time period is greater than the first time period, and then detects the first time period and the second time period respectively The average energy of the audio in the segment, and calculate the relative increment of the audio energy of the first time period and the second time period, and detect whether the rhythm is generated according to the relative increment of the audio energy, and generate a vibration signal when the rhythm is generated.
  • the vibration signal generating device calculates the audio data in the time period according to the specific time period received, and records the audio data in the time period, and then according to the above formula ( 1)-Equation (4) calculates and obtains audio average energy.
  • this embodiment selects 6 gunshots with large differences in amplitude in a certain game as audio data, and uses the vibration signal provided by this embodiment.
  • Signal Generation Methods Audio-to-vibration conversion experiments were performed. Among them, as shown in FIG. 4 , it is a schematic diagram of audio data collected from 6 gunshots with large amplitude differences in a certain game. As shown in FIG. 5 , it is a schematic diagram of average audio energy in the first time period obtained by using the vibration signal generation method provided in this embodiment. As shown in FIG. 6 , it is a schematic diagram of audio average energy in the second time period obtained by using the vibration signal generation method provided in this embodiment. As shown in FIG.
  • FIG. 7 it is a schematic diagram of the relative increase in audio energy of the audio average energy in the first time period relative to the audio average energy in the second time period (the upper limit of the figure is 10).
  • FIG. 8 it is a schematic diagram of a vibration signal obtained by performing real-time conversion processing on the above audio data by using the vibration signal generation method provided in this embodiment.
  • the vibration signal generation method utilizes the characteristic that the average energy of the audio frequency changes slowly in a longer period of time than the average energy in a shorter period of time.
  • the audio average energy detection in the time period can obtain two audio average energy with different amplitude change speeds, and by calculating the relative increment of the audio energy in the first time period and the second time period, the average energy in a short time and the Whether there is an approximate step change in the ratio of the average energy in a long period of time, through the detection of this step pulse, the audio rhythm detection in the case of random input of the audio amplitude can be realized, and a preset is generated when the rhythm is generated
  • the vibration waveform realizes real-time conversion of audio signal to vibration signal, and outputs vibration feedback consistent with the audio rhythm.
  • this method does not require any preprocessing, and the audio-vibration conversion process is performed in real time, so online vibration waveform generation can be realized, which is suitable for games or work scenarios that require real-time audio-vibration conversion.
  • this embodiment also provides a vibration signal generation device, as shown in Figure 9, the device includes:
  • the acquisition module is used to acquire audio data
  • a detection module configured to detect the average energy of the first audio in the first time period before the current moment, and the average energy of the second audio in the second time period; the first time period is less than the second time period;
  • a determining module configured to determine the relative increment of the audio energy of the first time period relative to the second time period according to the first audio average energy and the second audio average energy;
  • the generation module is used to generate a preset vibration signal according to a preset rule if the relative increase in audio energy is greater than or equal to a preset threshold.
  • the vibration signal generating device provided in this embodiment is based on the same idea as the above vibration signal generating method, and at least can achieve the beneficial effects that can be achieved by the above vibration signal generating method, which will not be repeated here.
  • Embodiments of the present application further provide an electronic device to execute the above method for generating a vibration signal.
  • FIG. 10 shows a schematic diagram of an electronic device provided by some embodiments of the present application.
  • electronic equipment 8 comprises: processor 800, memory 801, bus 802 and communication interface 803, processor 800, communication interface 803 and memory 801 are connected by bus 802;
  • processor 800 runs the computer program, it executes the vibration signal generation method provided in any one of the foregoing embodiments of the present application.
  • the memory 801 may include a high-speed random access memory (RAM: Random Access Memory), and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory.
  • RAM Random Access Memory
  • non-volatile memory such as at least one disk memory.
  • the communication connection between the device network element and at least one other network element is realized through at least one communication interface 803 (which may be wired or wireless), and the Internet, wide area network, local network, metropolitan area network, etc. can be used.
  • the bus 802 may be an ISA bus, a PCI bus, or an EISA bus, etc.
  • the bus can be divided into address bus, data bus, control bus and so on.
  • the memory 801 is used to store the program, and the processor 800 executes the program after receiving the execution instruction.
  • the vibration signal generation method disclosed in any implementation mode of the above-mentioned embodiments of the present application can be applied to the processor 800, or the processor 800 accomplish.
  • the processor 800 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method may be implemented by an integrated logic circuit of hardware in the processor 800 or an instruction in the form of software.
  • the above-mentioned processor 800 can be a general-purpose processor, including a central processing unit (Central Processing Unit, referred to as CPU), a network processor (Network Processor, referred to as NP), etc.; it can also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), off-the-shelf programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.
  • DSP digital signal processor
  • ASIC application-specific integrated circuit
  • FPGA off-the-shelf programmable gate array
  • Various methods, steps, and logic block diagrams disclosed in the embodiments of the present application may be implemented or executed.
  • a general-purpose processor may be a microprocessor, or the processor may be any conventional processor, and the like.
  • the steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, register.
  • the storage medium is located in the memory 801, and the processor 800 reads the information in the memory 801, and completes the steps of the above method in combination with its hardware.
  • the electronic device provided in the embodiment of the present application is based on the same inventive concept as the vibration signal generation method provided in the embodiment of the present application, and has the same beneficial effect as the method adopted, operated or realized.
  • the electronic device can also include a power converter and a linear motor (Linear Resonant Actuator) device body.
  • the power amplifier can be an amplifier that performs power matching on vibration signals, such as class A, class B, class AB, or class D Class driver, the vibration signal can be an analog signal or a customized digital signal.
  • the linear motor device body is used to generate tactile vibration feedback.
  • the embodiment of the present application also provides a computer-readable storage medium corresponding to the vibration signal generation method provided in the foregoing embodiment. Please refer to FIG. A program (ie, a program product), when the computer program is run by the processor, it will execute the method for generating a vibration signal provided in any of the aforementioned embodiments.
  • examples of computer-readable storage media may also include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access Memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other optical and magnetic storage media will not be repeated here.
  • PRAM phase change memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • RAM random access Memory
  • ROM read-only memory
  • EEPROM electrically erasable programmable read-only memory
  • flash memory or other optical and magnetic storage media will not be repeated here.
  • the computer-readable storage medium provided by the above embodiments of the present application is based on the same inventive concept as the vibration signal generation method provided by the embodiments of the present application, and has the same beneficial effect as the method adopted, run or implemented by the stored application program.

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Abstract

La présente invention concerne un procédé et un appareil de génération de signal de vibration, un dispositif électronique, ainsi qu'un support de stockage. Le procédé de génération de signal de vibration consiste à : acquérir des données audio ; détecter une première énergie moyenne audio dans une première période de temps avant le moment actuel et une seconde énergie moyenne audio dans une seconde période de temps, la première période de temps étant plus petite que la seconde période de temps ; déterminer un incrément relatif d'énergie audio de la première période de temps par rapport à la seconde période de temps selon la première énergie moyenne audio et la seconde énergie moyenne audio ; et si l'incrément relatif d'énergie audio est supérieur ou égal à une valeur de seuil prédéfinie, générer un signal de vibration prédéfini selon une règle prédéfinie. Selon la présente invention, une détection de rythme peut être effectuée en temps réel, et des signaux de vibration peuvent être générés de manière synchrone.
PCT/CN2022/124491 2021-11-25 2022-10-11 Procédé et appareil de génération de signal de vibration, dispositif électronique et support de stockage WO2023093333A1 (fr)

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