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38 results about "Equalization (audio)" patented technology
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Equalization or equalisation is the process of adjusting the balance between frequency components within an electronic signal. The most well known use of equalization is in sound recording and reproduction but there are many other applications in electronics and telecommunications. The circuit or equipment used to achieve equalization is called an equalizer. These devices strengthen (boost) or weaken (cut) the energy of specific frequency bands or "frequency ranges".
Audio enhancement system and method
ActiveUS20060025994A1Improve system qualityIncrease flexibilityEar treatmentGain controlTime domainElectricity
A system and method for enhancing the sound signal produced by an audio system in a listening environment by compensating for ambient sound in the listening environment, comprises producing an audio sound in the time domain from an electrical sound signal in the time domain. The electrical sound signal in the time domain is transformed into an electrical sound signal in the frequency domain and the electrical sound signal in the frequency domain is retransformed into an audio sound in the time domain. The total sound level in the environment is measured and a signal representative thereof is generated. The audio sound signal and the total sound signal are processed to extract a signal representing the ambient sound level within the environment, and equalization is performed in the frequency domain to adjust the output from the audio sound signal to compensate for the ambient noise level.
Owner:HARMAN BECKER AUTOMOTIVE SYST
Dynamic equalization in a directional speaker array
ActiveUS10708691B2Reduce sound distortionReduce the amplitudeMicrophonesSignal processingAuditory radiationEqualization (audio)
An electronic device that provides dynamic equalization in a directional speaker array is described. Based at least in part on audio content and an acoustic radiation pattern associated with a second electronic device, the electronic device may determine drive signals for a set of drivers. Then, the electronic device may adjust the drive signals for at least a subset of the set of drivers based at least in part on a distortion margin in at least the subset of the drivers, where the distortion margin is based at least in part on the drive signals, a distortion threshold of at least the subset of the drivers and a volume setting. Next, based at least in part on the adjusted drive signals, the electronic device may output, using the set of drivers, the sound corresponding to the audio content.
Owner:B & W GRP LTD +1
Media presentation system using audience and audio feedback for playback level control
Automatic control of media presentation parameters is provided by using one or more of real-time audio playback measurement data from microphones and audience facial and body expression interpretation from video and infrared cameras, in conjunction with artificial intelligence for interpretation and evaluation of facial and body expression and predetermined perceptual audio models. Media presentation parameters can include, for example, speaker volume, audio equalization, feedback elimination, play / pause, and other audio content-related aspects of presentation. In some embodiments, additional environmental parameters can be modified to enhance audience experience, such as, for example, temperature, lighting, and the like, in response to audience facial and body expression.
Owner:NXP USA INC
Tone balancing method for virtual sound replay of loudspeaker
ActiveCN111556425AExcellent tonePower balanceFrequency response correctionLoudspeaker signals distributionEqualization (audio)Filter (signal processing)
The invention provides a tone balancing method for virtual sound playback of a loudspeaker. The tone balancing method comprises the following steps: inputting an original single-channel audio signal E0; processing a single-channel audio signal by a pair of auditory transmission synthesis filters; obtaining signals EL and ER of the two paths; wherein the pair of auditory transmission synthesis filters adopts a loudspeaker virtual sound signal processing function comprising high-frequency-band power equalization and low-frequency-band multiplication with a gain factor irrelevant to frequency tofilter a single-channel audio signal; and selectively feeding the signals EL and ER of the two paths to a left loudspeaker and a right loudspeaker which are symmetrically arranged in front of the horizontal plane to be replayed. By introducing the frequency division frequency, power equalization is carried out on the loudspeaker virtual sound signal at the high frequency band above the frequency division frequency, the shape of the amplitude spectrum of the low frequency band is kept unchanged, the tone quality of loudspeaker virtual sound replay is improved, insufficient replay low frequencycan be avoided, and virtual source positioning of replay is not influenced.
Owner:SOUTH CHINA UNIV OF TECH
Audio processing method and device
ActiveCN111045634AAvoid affecting the equalization effectEasy to useSound input/outputHigh level techniquesComputer hardwareEqualization (audio)
The embodiment of the invention discloses an audio processing method and device. One specific embodiment of the method comprises the following steps: acquiring a to-be-processed audio; performing audio characteristic analysis on the to-be-processed audio to obtain audio characteristic data, and displaying the audio characteristic data; in response to the received target audio characteristic data obtained by adjusting the audio characteristic data by the user, determining whether the target audio characteristic data is within a preset threshold range or not; and in response to determining thatthe target audio characteristic data is not within the threshold range, adjusting the target audio characteristic data, and performing equalization processing on the to-be-processed audio based on theadjusted target audio characteristic data. According to the embodiment, the equalization processing effect is prevented from being influenced due to the fact that the target audio characteristics exceed the preset range.
Owner:BEIJING MICROLIVE VISION TECH CO LTD
Audio-based light control system and method
ActiveCN112911767AImplement keytone renderingImprove experienceElectrical apparatusEnergy saving control techniquesSignal lightTimbre
The invention discloses an audio-based light control system and method. The system comprises an audio signal input unit, an audio signal equalization unit, a timbre data analysis unit, a tone data analysis unit, a loudness data analysis unit and a light mode unit. Each data analysis unit reads the audio digital signal and analyzes the audio digital signal into tone data, tone data and loudness data; the light mode unit converts the tone data into a light dominant tone signal, converts the tone data into a light local tone signal, and converts the loudness data into a light total brightness signal; the light control system performs hierarchical control on light through timbre data, tone data and loudness data; the timbre data is used for controlling the dominant tone of light; the tone data is used for controlling local tone of light; and the loudness data is used for controlling the total brightness of light. According to the invention, the brightness and color of the light can be changed along with the change of timbre, tone and loudness, the rhythm effect is richer, and the user experience is improved.
Owner:SHENZHEN LINKLITE SMART LIGHTING CO LTD
Voice definition algorithm under noise and train audio playing method and system thereof
ActiveCN114550740AAvoid high sound pressure levelsHear clearlySustainable transportationSpeech analysisEqualization (audio)Noise
The invention discloses a voice definition algorithm under noise and a train audio playing method and system thereof. The method comprises the steps that S101, noise audios collected by sound pickups pre-arranged in all carriages of a train are acquired; receiving an audio stream sent by the vehicle-mounted PIS system, and preprocessing the audio stream; s102, analyzing the noise audio based on the voice definition algorithm under the noise described in the claim 1; s103, adjusting the energy distribution of the voice signal in different frequency bands of the audio stream based on the analysis result of S102, and obtaining the audio stream after energy re-equalization; s104, noise audios are collected by all the carriages respectively, and S102 to 103 are executed correspondingly; and S105, respectively establishing a one-to-one correspondence relationship between each audio stream after re-energy balance and each compartment. The method has the advantages that the voice broadcasting effect in the compartment is improved, and the experience of passengers is improved.
Owner:TIANJIN BEIHAI COMM TECH
Sound changing method, device, equipment and medium
PendingCN113241082ASharp noise suppressionSuppress noiseSpeech analysisHigh level techniquesEqualization (audio)Noise
The invention provides a sound changing method and device, equipment and a medium, and relates to the technical field of computers, and the sound changing method comprises the steps: determining a target fundamental frequency offset and target sound changing parameters corresponding to an initial audio according to a target sound changing audio corresponding to the initial audio, wherein the target sound changing parameters comprise a target filtering parameter and a target equalization parameter; filtering the initial audio according to the target filtering parameter to obtain a first audio; based on the target fundamental frequency offset, carrying out fundamental frequency conversion processing on the first audio to obtain a second audio; and performing equalization processing on the second audio according to the target equalization parameter to obtain a target sound changing audio. According to the scheme, sharp noise and depressed sound after sound changing can be suppressed, and therefore the sound changing performance is improved.
Owner:杭州网易智企科技有限公司
Deep learning-based train broadcast speech enhancement method and system
ActiveCN114121033AImprove intelligibilityImprove fullnessSpeech analysisEqualization (audio)In vehicle
The invention discloses a train broadcast speech enhancement method and system based on deep learning. The method comprises the following steps: acquiring train operation information of a vehicle-mounted PIS system; train operation information is recognized, and a train real-time scene is determined; reading acoustic equalization parameters matched with the train real-time scene from a preset database; acquiring an audio stream of the vehicle-mounted PIS system; and based on the acoustic equalization parameter, processing the audio stream by using a preset central control sound effect algorithm, adjusting a sound sensing position, and sending the processed audio stream to the vehicle-mounted PIS system for playing. The method has the effects of automatically switching the sound field equalization parameters in combination with different operation scenes of the train and dynamically increasing the sound field.
Owner:SHENZHEN TONGGUANG TRACK TRAFFIC TECH
Audio processing method and device, electronic equipment and storage medium
The invention relates to an audio processing method and device, electronic equipment and a storage medium. The method comprises the steps: collecting a recorded audio signal which comprises a human voice signal and an accompaniment signal; determining the feature information of the human voice signal and the accompaniment signal, wherein the feature information of the human voice signal comprises frequency information, and the feature information of the accompaniment signal comprises loudness information; based on the frequency information of the human voice signal, carrying out equalization processing on the human voice signal to obtain an equalized human voice signal; and based on the loudness information of the human voice signal and the loudness information of the accompaniment signal after equalization processing, carrying out loudness equalization processing on the human voice signal and the accompaniment signal after equalization processing so as to generate a target audio.
Owner:BEIJING DAJIA INTERNET INFORMATION TECH CO LTD
Deep learning-based audio equalization
PendingUS20210217430A1Rational designEnhancing and attenuating balancingElectrophonic musical instrumentsSpeech analysisEqualization (audio)Engineering
A deep learning method-based tonal balancing method, apparatus, and system, the method includes: extracting features from audio data to obtain audio data features, generating audio balancing results by using a trained audio balancing model based on the obtained audio data features. The present invention employs deep neural networks and unsupervised deep learning method to solve the problems of audio balancing of unlabeled music and music of unknown style. The present invention also combines user preferences statistics to achieve a more rational multi-style audio balancing design to meet individual needs.
Owner:ANKER INNOVATIONS TECH CO LTD
Method and apparatus for processing audio signal based on equalization filter
ActiveCN112956210AOcclusion effect electronic compensationFrequency response correctionEqualization (audio)Occlusion effect
The invention relates to a method for processing an audio signal, the method comprising: processing the audio signal according to a pair of mouth to ear transfer functions, to obtain a processed audio signal; filtering the processed audio signal, using a pair of equalization filters, to obtain a filtered audio signal, wherein a parameter of the equalization filter is depends on an acoustic impedance of a headphone; and outputting the filtered audio signal to the headphone. The method counteracts the occlusion effect and provides a natural perceived sound pressure.
Owner:HUAWEI TECH CO LTD
Electronic device, method, and storage medium
PendingCN112767964AElectrophonic musical instrumentsSpeech analysisEqualization (audio)Telecommunications
The invention relates to an electronic device, a method and a storage medium. The electronic device includes circuitry configured to: input an audio mixed signal including a plurality of sources to a deep neural network to obtain an equalization parameter; and performing audio equalization on the audio mixed signal based on an equalization parameter obtained from the deep neural network to obtain a separation source.
Owner:SONY CORP
Crowd-sourced audio data for venue equalization
Mobile devices may capture audio signals indicative of test audio received by an audio capture device of the mobile device; and send the captured audio and the zone designation to a sound processor to determine equalization settings for speakers of the zone of the venue. An audio filtering device may receive the captured audio signals from the mobile devices; compare each of the captured audio signals with the test signal to determine an associated reliability of each of the captured audio signals; combine the captured audio signals into zone audio data; and transmit the zone audio data and associated reliability to a sound processor configured to determine equalization settings for the zone based on the captured audio signals and the test signal.
Owner:HARMAN INT IND INC
Dynamic equalization for cross-talk cancellation
ActiveCN110326310ALoudspeaker signals distributionStereophonic systemsCrosstalk cancellationEqualization (audio)
A first playback stream presentation intended for reproduction on a first audio reproduction system and transform parameters may be received and decoded. The second playback stream presentation may beintended for reproduction on headphones. The transform parameters may be applied to an intermediate playback stream presentation to obtain the second playback stream presentation. The intermediate playback stream presentation may be the first playback stream presentation, a downmix of the first playback stream presentation, or an upmix of the first playback stream presentation. A cross-talk- cancelled signal may be obtained by processing the second playback stream presentation with a cross-talk cancellation algorithm. The cross-talk-cancelled signal may be processed by a dynamic equalizationor gain stage wherein an amount of equalization or gain may be dependent on a level of the first playback stream presentation or the second playback stream presentation.
Owner:DOLBY LAB LICENSING CORP
Loudspeaker system and driving method based on the loudspeaker system
ActiveCN111654568BRaise the resonance frequencyImprove acoustic performanceFrequency/directions obtaining arrangementsTelephone set constructionsEqualization (audio)Engineering
The invention provides a speaker system, which is applied to a mobile terminal. The mobile terminal includes a housing, a cover plate, and a speaker system placed in a storage space formed after the cover plate is connected to the housing. The first speaker module on the edges of the two short sides of the casing; the first speaker module includes a first speaker housing with a receiving cavity, a first speaker unit placed in the first speaker housing, and the first speaker unit Close the first valve of the first speaker housing; when an audio signal is input into the first speaker module, open or close the first valve according to the audio signal, so as to increase the resonance frequency of the speaker system or reduce the vibration amplitude of the shell of the mobile terminal. The invention can realize the pressure equalization and damping adjustment of the whole loudspeaker system.
Owner:AAC TECH PTE LTD
Method for determining audio equalization function, audio equalization method and device
ActiveCN108932953BRecord information storageDigital recording/reproducingEqualization (audio)Audio frequency
Owner:HUAWEI TECH CO LTD
A method for sound field equalization and an earphone
ActiveCN110996210BQuality improvementHigh-quality listening experienceEarpiece/earphone attachmentsFrequency response correctionAnalog earEqualization (audio)
The present disclosure relates to a method for sound field equalization and an earphone. The method includes: when the earphone is not placed in the ear canal, determining the first coefficient of the first filter, so that the first filter can simulate the signal distortion caused by the loudspeaker and the in-ear microphone used in the earphone; In the case of the ear canal, the second coefficient of the second filter is determined based on the first audio signal transmitted to the speaker, the second audio signal collected by the in-ear microphone, and the first coefficient of the first filter, so that The second filter can equalize signal distortion caused by ear canal reflection; process the first audio signal with the second filter of the second coefficient to obtain a third audio signal; and play the third audio signal. The above method balances the sound field changes caused by the structure of the human ear canal and the wearing method of the earphone by adjusting the filter coefficients, so as to ensure that the user can obtain high-quality listening experience in different wearing methods.
Owner:BESTECHNIC SHANGHAI CO LTD
Bone conduction earphone based on digital equalization technology
ActiveCN113938787AImprove performanceReduce noise interferenceMicrophonesLoudspeakersLow noiseEqualization (audio)
The invention provides a bone conduction earphone based on a digital equalization technology, which comprises a bone conduction earphone module and an ear hook, and is characterized in that the bone conduction earphone module comprises a wireless communication unit, a digital equalization processing unit, a voice enhancement processing unit, a controllable switch, an audio processing chip and a bone conduction unit, wherein the wireless communication unit, the digital equalization processing unit and the controllable switch are connected in sequence, the output end of the controllable switch is connected with the audio processing chip and the voice enhancement processing unit, and the audio processing chip is connected with the bone conduction unit. The performance of the bone conduction earphone is improved by adopting a digital equalization technology, and the voice enhancement processing unit is arranged, so that noise interference can be further reduced.
Owner:深圳市鑫正宇科技有限公司
Earbuds With Vocal Frequency-Based Equalization
InactiveUS20200077190A1Improve user 's listening experienceImprove audio qualitySignal processingSpeech analysisEqualization (audio)Engineering
Systems and methods are provided in which characteristics of a user's voice are utilized to record and to generate a user-specific audio filter. The user-specific audio filter is applied to stored audio files to generate modified audio files that enhance the user's listening experience. In a preferred embodiment the system utilizes a portable audio player and a pair of earbuds.
Owner:SONIPHI LLC
Method and system for train announcement speech enhancement based on deep learning
ActiveCN114121033BImprove intelligibilityImprove fullnessSpeech analysisEqualization (audio)In vehicle
The invention discloses a method and system for enhancing train broadcast voice based on deep learning. The method includes obtaining train operation information of a vehicle-mounted PIS system; identifying train operation information and determining the real-time scene of the train; Acoustic equalization parameters matched by the scene; obtain the audio stream of the vehicle PIS system; and, based on the acoustic equalization parameters, process the audio stream with the preset central control sound effect algorithm, adjust the position of the sound experience, and send the processed audio stream to the vehicle The PIS system is used for playback. The application has the effect of automatically switching sound field equalization parameters in combination with different operating scenarios of trains, and dynamically increasing the sound field.
Owner:SHENZHEN TONGGUANG TRACK TRAFFIC TECH
Media presentation system using audience and audio feedback for playback level control
Automatic control of media presentation parameters is provided by using one or more of real-time audio playback measurement data from microphones and audience facial and body expression interpretation from video and infrared cameras, in conjunction with artificial intelligence for interpretation and evaluation of facial and body expression and predetermined perceptual audio models. Media presentation parameters can include, for example, speaker volume, audio equalization, feedback elimination, play / pause, and other audio content-related aspects of presentation. In some embodiments, additional environmental parameters can be modified to enhance audience experience, such as, for example, temperature, lighting, and the like, in response to audience facial and body expression.
Owner:NXP USA INC
Method and system for loudness equalization and dynamic equalization during DRC based on encoded audio metadata
The present invention provides dynamic loudness equalization of received audio content in a playback system using metadata comprising an instantaneous loudness value for the audio content. The playback level is derived from the playback system's user volume setting and compared to the mix level assigned to the audio content. Calculating parameters defining an equalization filter for filtering the filtered audio content before driving the speakers with said audio content, based on the instantaneous loudness value and a comparison of the playback level to the assigned mix level. Other embodiments are also described and claimed.
Owner:APPLE INC
Game platform and its audio processing method
ActiveCN108874355BAchieve the effect of real-time secret transmissionMicrophones signal combinationSubstation equipmentEqualization (audio)Processing element
A game platform and an audio processing method thereof. The game platform includes a central processing unit, an audio interface circuit, a first connection interface, a second connection interface, a third connection interface, a first equalizer circuit, a first audio mixing circuit and a second audio mixing circuit. The first equalizer circuit equalizes the acoustoelectrically converted audio to generate a first equalized audio. The first mixing circuit mixes the first equalized audio and the first platform voice signal to generate a second platform voice signal for the third connection interface. The second mixing circuit mixes the host audio and the first platform voice signal to generate output audio to the first connection interface.
Owner:ACER INC
Speech intelligibility algorithm under noise and its train audio playback method and system
ActiveCN114550740BAvoid high sound pressure levelsHear clearlySustainable transportationSpeech analysisEqualization (audio)Noise
The invention discloses a speech intelligibility algorithm under noise and a train audio playback method and system. The method includes: S101. Acquire noise audio collected by pickups pre-arranged in each car of the train; Audio stream, and do audio stream preprocessing; S102, analyze the noise audio based on the speech intelligibility algorithm under noise as claimed in claim 1; S103, adjust the energy of the speech signal in different frequency bands of the audio stream based on the analysis result of S102 distribution to obtain the audio stream after re-energy equalization; S104, each compartment collects noise audio, and executes S102-103 correspondingly; S105, each audio stream after re-energy equalization establishes a one-to-one correspondence with each compartment. The present application has the effect of enhancing the effect of voice broadcasting in the carriage and improving the experience of passengers.
Owner:TIANJIN BEIHAI COMM TECH
Direct current (dc) and/or alternating current (ac) load detection for audio codecs
ActiveCN108781083BElectric signal transmission systemsHeadphones for stereophonic communicationEqualization (audio)Headphones
A portable device can be configured to measure the loading characteristics of headphones. The device can measure the direct current (DC) and / or alternating current (AC) characteristics of the load. These characteristics may be measured by an audio component, such as an audio codec chip or an integrated circuit (IC) controller, and reported to software or firmware running on a processor coupled to the audio component. Software or firmware can then take action based on the measured load characteristics. For example, the load characteristics may be compared to a database of earphones and their known load characteristics to determine the particular earphone model or type of earphones attached to the audio output. The processor can then apply an appropriate equalization curve.
Owner:CIRRUS LOGIC INT SEMICON
Equalization based on encoded audio metadata
ActiveCN107851449BElectronic editing digitised analogue information signalsSpeech analysisEqualization (audio)Multiplexer
The present invention provides a system for producing an encoded digital audio recording, the system having an audio encoder that encodes a digital audio recording having a plurality of audio channels or audio objects. An equalization (EQ) value generator generates a sequence of EQ values defining the EQ filtering to be applied when decoding the encoded digital audio recording, wherein the EQ filtering is to be applied independently of any downmixing A group of one or more of said audio channels or audio objects applied to said recording. A bitstream multiplexer combines the encoded digital audio recording with the sequence of EQ values as metadata associated with the encoded digital audio recording. A system for decoding encoded audio recordings is also described.
Owner:APPLE INC
Game platform and its audio processing method
ActiveCN108874354BAchieve the effect of real-time secret transmissionMicrophones signal combinationSubstation equipmentEqualization (audio)Engineering
A game platform and an audio processing method thereof. The game platform includes a first equalizer circuit, a first sound mixing circuit and a second sound mixing circuit. The first equalizer circuit equalizes the audio-electrically converted audio to generate equalized audio. The first mixing circuit mixes the equalized audio and the first platform voice signal to generate a second mixed signal to the fifth connection interface. The second mixing circuit mixes the equalized audio and the voice signal of the second platform to generate a first mixed signal to the third connection interface.
Owner:ACER INC
Self-produced music apparatus and method
An application for operating on a smart phone that records a musician's performance, either voice or instrumental, in combination with pre-recorded music. The combination allows for the auto tuning of the recording, the compression of the recording, the equalization of the recording, adding in reverb, correcting latency and the audio quantization of the rhythm, in addition to music enhancement features such as vocal spread, DeEsser, vocal doubler, vocal harmonizer, tape saturation, pitch correcdtion, flanger, phaser, auto pan, vibrato, tremolo, rotary, ring modulator, metalizer, expander, noise gate, wah, vocal leveling, tape stop, half speed, LoFi, and stutter. Once combined, the song is transmitted to social media and / or to an online store for sale. The user can also make a video with the song. Additional marketing such as song competitions or music reviews and ratings are also provided.
Owner:YOELIN LOUIS
A method and device for constructing a diffuse sound field environment in a car based on virtual speakers
ActiveCN112019994BUniform frequencySatisfy the sense of encirclementStereophonic systemsDigital signal processingEqualization (audio)
Owner:WUHAN UNIV OF TECH +1
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