37 results about "Equalization (audio)" patented technology

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

The invention discloses a filter device and an audio system. The filter device comprises a partition body and a plurality of communication holes arranged on the partition body. The partition body comprises two back-to-back sides, at least one of which is provided with a protruding edge arranged corresponding to the edge of the communication hole. The invention has the effects of reducing mutual interference of audio signals of sound, highlighting low-frequency partial signals, reducing distortion, strong anti-signal interference ability, increasing bearing capacity, curve equalization, and increasing frequency range.