38 results about "Equalization (audio)" patented technology

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.

The invention provides an audio equalization function determination method, and an audio equalization method and apparatus. The audio function determination method includes steps: obtaining at least apair of source audio signals and in-ear-canal audio signals; analyzing a function relation between the at least one pair of source audio signals and the in-ear-canal audio signals, and obtaining a first transfer function of an audio playing device; processing the first transfer function by employing a preset first frequency response function, and obtaining a second transfer function, wherein thefirst frequency response function is obtained by modeling of a basilar membrane characteristic; and processing the second transfer function by employing a preset second frequency response function, and obtaining an equalization function for equalization processing of audio signals played by the audio playing device, wherein the second frequency response function is an expected transfer function ofthe audio playing device. Further, the audio playing device can perform equalization processing on audios according to the audio equalization method determined according to the above method.

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.

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 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.

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.

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.

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.

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.

The invention belongs to the technical field of digital signal processing, and discloses a method and device for constructing a diffuse sound field environment in a car based on a virtual speaker. The method includes performing decorrelation processing on input original audio information to obtain multiple audio frequencies, and constructing a target diffuse sound field environment. The HRTF parameter information is measured and equalized, and the HRTF filter is built. After the audio passes through the HRTF filter, sounds from different directions are virtualized, and the obtained audio from several directions is superimposed and sent to the real speaker. The device includes an audio decorrelation processing unit, an equalization processing unit, an HRTF filter unit, and an audio gain superposition unit. The invention solves the problem that passengers in the car perceive the direction of the ASD sound, which causes the authenticity of the ASD sound to be reduced, and can realize the sound field in the car to generate a sense of envelopment in the acoustic space, meeting the setting requirements for the sound quality in the car.