12 results about "Loudness compensation" patented technology

The invention relates to an audio processing method and device, electronic equipment and a storage medium, and the method comprises the steps: obtaining a gain amplitude value of a current audio signal and a signal flow loudness value of the current audio signal when the set volume of the audio signal is detected to be changed; determining the loudness amplitude value of the current audio signal according to the gain amplitude value and the signal flow loudness value; acquiring an audio compensation strategy corresponding to the loudness amplitude value; and performing loudness compensation on the audio signal according to the audio compensation strategy to obtain an audio signal meeting a preset loudness condition. According to the method, the user hearing change caused by the amplitude change of the input audio stream and the set volume change is comprehensively considered, the amplitude change of the input audio stream is calculated by adopting a loudness analysis algorithm, the loudness change is reflected more comprehensively and accurately, and the user experience is improved by calling corresponding compensation parameters. Therefore, the sound experience of the user is greatly improved, and a better audio playing effect is realized.

The embodiment of the invention provides a hearing aid loudness compensation method, a computer program product and a hearing aid. After the hearing aid collects an original sound signal, loudness compensation can be carried out on the original sound signal by using a plurality of preset loudness compensation strategies to obtain a compensation sound signal corresponding to each loudness compensation strategy; and then, a pre-trained comfort evaluation model can be utilized to evaluate the comfort level of the compensated sound signal corresponding to each loudness compensation strategy, a better loudness compensation strategy is selected based on the comfort level, and the sound signal compensated by the better loudness compensation strategy is output to a user. According to the loudness compensation method provided by the embodiment of the invention, more natural, comfortable and clear hearing experience can be provided for the user, and the performance of the hearing aid and the satisfaction degree of the user are remarkably improved.

A method performed by an audio system that includes a headset for playing back audio, the method includes receiving an audio signal having audio content, determining a characteristic of the audio content, determining a parameter of the headset, producing a filtered audio signal by applying an equalization (EQ) filter to the audio signal based on the characteristic of the audio content and the parameter of the headset, and driving one or more speakers of the headset with the filtered audio signal.

The invention relates to the technical field of audio adjustment, and provides an audio signal adaptive adjustment method and device, electronic equipment and a storage medium. The method comprises the following steps: performing joint feature extraction on environmental noise data and audio signals to obtain multi-dimensional feature data, performing loudness gain prediction according to the multi-dimensional feature data to obtain a predicted loudness gain value, and performing loudness simulation on the audio signals to obtain predicted loudness. Adaptive filtering and gain calculation are carried out on the predicted loudness to obtain a real-time loudness compensation value, and data fusion is carried out on current scene information and user historical adjustment data to obtain a user preference gain value; and performing gain optimization on the audio signal according to the predicted loudness gain value, the user preference gain value and the real-time loudness compensation value to obtain a gain optimized audio signal. According to the invention, through multi-dimensional feature fusion, deep learning time sequence prediction, real-time adaptive compensation and user habit learning, accurate adaptive adjustment of the audio signal is realized.

A method and apparatus for adjusting loudness are disclosed, relating to the field of audio processing, to ensure consistent loudness when playing different music in scenarios where numerous audio formats coexist, and to achieve loudness effects close to those produced in a recording studio, thereby meeting the user's loudness requirements. The method includes: obtaining an audio resource from a media server based on an audio playback instruction; acquiring a first loudness value corresponding to the type of the audio resource determined by a first loudness algorithm; determining a loudness adjustment value for the audio resource, wherein the loudness adjustment value is a weighted sum of a loudness compensation value and a loudness difference value, the loudness compensation value corresponding to the first loudness algorithm and a first rendering algorithm, the first rendering algorithm being used to adjust the audio resource to match the channel distribution of the playback device; the loudness difference value being the difference between the target loudness and the first loudness value; and adjusting the loudness of the audio resource to the determined loudness adjustment value.

The invention relates to an audio processing method and system, electronic equipment and a storage medium. The method comprises the steps that when it is detected that an audio signal changes, the current signal amplitude is obtained, a compensation strategy of the audio signal is determined, and the compensation strategy comprises compensation sub-strategies of the audio signal under multiple sound pressure levels; determining a preset sound pressure level of the audio signal according to the signal amplitude; determining a target compensation sub-strategy corresponding to the preset sound pressure level in a compensation strategy; and performing loudness compensation on the audio signal according to the target compensation sub-strategy to obtain an audio signal meeting a preset loudness condition. When it is detected that the audio signal changes, the signal amplitude of the current audio signal is obtained in real time, the preset sound pressure level is determined according to the signal amplitude, and then the corresponding compensation decision is determined, so that self-adaptive loudness compensation for the amplitude change of a television playing program source is achieved, and the sound effect experience is improved.

The present invention discloses a hearing aid fitting device that utilizes keyboard key input, comprising a digital signal processor, a loudness compensator, a time controller, an encoding note device, a feedback controller, a keyboard input device, and a sound output device. The keyboard input device is connected to the encoding note device, the encoding note device is connected to the digital signal processor, the feedback controller is connected to the time controller, the time controller is connected to the loudness compensator, the loudness compensator is connected to the digital signal processor, and the sound output device is connected to the digital signal processor. Also disclosed is a fitting method based on the above-mentioned hearing aid fitting device. The hearing aid fitting device and method of the present invention implement the "duration" control mechanism and program that are missing in hearing aid fitting, and reduce loudness by increasing the playback duration, thereby avoiding the drawbacks and defects of the fitting method of setting a single frequency-loudness value in modern hearing aid fitting.

A decoder for generating an audio output signal having one or more audio output channels includes a receiving interface for receiving an audio input signal including a plurality of audio object signals, for receiving loudness information on the audio object signals, and for receiving rendering information indicating whether one or more of the audio object signals shall be amplified or attenuated. Moreover, the decoder includes a signal processor for generating the one or more audio output channels of the audio output signal. The signal processor is configured to determine a loudness compensation value depending on the loudness information and depending on the rendering information. Furthermore, the signal processor is configured to generate the one or more audio output channels of the audio output signal from the audio input signal depending on the rendering information and depending on the loudness compensation value. Moreover, an encoder is provided.

The invention discloses a loudness compensation method for a vehicle-mounted audio system, relates to the technical field of vehicle-mounted audio processing, and solves the technical problem of low loudness compensation precision of the audio system caused by interference of multiple noise sources in the prior art. The method comprises the following steps: collecting vehicle environment data through a multi-mode sensor array; performing mixed noise separation processing on the vehicle environment data, and outputting separated independent noise source features; on the basis of independent noise source features and the vehicle environment data, scene tags are generated through a scene cognition model; inputting the scene label into a reinforcement learning strategy network to generate a loudness compensation strategy; and implementing multi-band independent compensation and sound field control at the output end of the loudspeaker based on a loudness compensation strategy.

A decoder for generating an audio output signal having one or more audio output channels includes a receiving interface for receiving an audio input signal including a plurality of audio object signals, for receiving loudness information on the audio object signals, and for receiving rendering information indicating whether one or more of the audio object signals shall be amplified or attenuated. Moreover, the decoder includes a signal processor for generating the one or more audio output channels of the audio output signal. The signal processor is configured to determine a loudness compensation value depending on the loudness information and depending on the rendering information. Furthermore, the signal processor is configured to generate the one or more audio output channels of the audio output signal from the audio input signal depending on the rendering information and depending on the loudness compensation value. Moreover, an encoder is provided.

The invention relates to the field of data processing, and discloses an audio processing system, method and device and a storage medium. The system comprises a detection module used for detecting the volume of an original digital audio signal in real time and triggering a healthy listening mode when the volume is smaller than a first preset sound pressure level threshold value; the initialization module is used for initializing the dynamic range expansion processor and the audio compensation processor; the expansion module is used for carrying out dynamic range expansion on the original digital audio signal by utilizing a dynamic range expansion processor to obtain an expanded digital audio signal; the compensation module is used for performing loudness compensation on the expanded digital audio signal by using an audio compensation processor to obtain a compensated digital audio signal; and the conversion module is used for converting the compensated digital audio signal into an analog audio signal and playing the analog audio signal. According to the invention, through full-process cooperation of detection, initialization, expansion, compensation and conversion modules, hearing protection and high-quality audition experience are taken into account.

Decoder apparatus, computer program and methods of processing audio data for playback are described. They include receiving a bitstream including encoded audio data and metadata that includes DRC set(s), and for each DRC set, an indication of whether the DRC set is configured for providing a loudness leveling effect. The metadata further includes personalization experience information. The method further includes identifying DRC sets that are configured for providing the dynamic range compensation effect; decoding the encoded audio data to obtain decoded audio data; selecting one of the identified DRC sets configured for providing the loudness leveling effect; extracting from the bitstream one or more DRC gains corresponding to the selected DRC set; applying to the decoded audio data the one or more DRC gains corresponding to the selected DRC set to obtain dynamic loudness compensated audio data; and outputting the dynamic loudness compensated audio data for playback.