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38 results about "Equalization (audio)" patented technology

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

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

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

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

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

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

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

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

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

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

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

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

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

A method for sound field equalization and an earphone

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

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
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