A system and method for optimizing the low-frequency sound rendition of an audio signal, implementing variations in a plurality of parameters of the audio signal according to the volume level of the signal chosen by a user, in particular filtering or compression parameters, or parameters relating to the harmonics of the audio signal, while seeking to optimize the dynamics and the bandwidth of the audio signal according to the volume, in order to provide an optimal rendition to the user.

Methods and apparatuses for addressing open space noise are disclosed. In one example, a method for masking open space noise includes optimizing a recorded naturally occurring sound signal. The method also includes outputting the optimized recorded naturally occurring sound signal from a plurality of speakers distributed in the open space. Further, the method includes displaying a natural system complementing the optimized recorded naturally occurring sound signal.

An electronic device may be configurable to operate in a scrambling mode and a non-scrambling mode while processing chat audio and microphone audio for a first player participating in an online multiplayer game. While operating in the non-scrambling mode, the electronic device may be configured to transmit the microphone audio without scrambling the microphone audio. While operating in the scrambling mode, the electronic device may be configured to scramble the microphone audio and transmit the scrambled microphone audio. The electronic device may be operable to select a scrambling key used to scramble the microphone audio based on a signal received by the electronic device that indicates a role of the player in the online multiplayer game. The role of the player may correspond to which of two or more opposing teams the first player is a member of in the online multiplayer game.

A sound source playback unit plays back sound data from a sound source and outputs a playback signal. An amplification unit amplifies the playback signal and outputs the playback signal as an output signal converted to sound in a speaker. A fault detection unit including a first conversion circuit compares the playback signal to a predetermined first threshold, converts a waveform of the playback signal, and outputs the converted waveform as a converted playback signal. A second conversion circuit compares the output signal to a predetermined second threshold, converts a waveform of the output signal, and outputs the converted waveform as a converted output signal. A comparison circuit compares the converted playback signal to the converted output signal, and a determination circuit determines an output of the comparison circuit. Based on the determination, the fault detection unit detects a fault in the amplification unit.

A far-field pickup device including a device body and a microphone pickup unit is provided. The microphone pickup unit is configured to collect user speech and an echo of a first sound signal output by the device body, and transmit, to the device body, a signal obtained through digital conversion of the collected user speech and the echo. The device body includes a signal playback source, a synchronizing signal generator, a horn, a delay determining unit, and an echo cancellation unit configured to perform echo cancellation on the signal transmitted by the microphone pickup unit to obtain a collected human voice signal.

A user device can be used to correct for a latency of an audio chain, which extends inclusively between an input and a speaker. The user device can communicate an indication to the speaker to play a sound at a first time, and record a second time at which a microphone on the user device detects the sound. The user device can compare the first and second times to determine a latency of the audio chain. The user device can communicate adjustment data corresponding to the determined latency to a component in the audio chain. The component can use the adjustment data to correct for the determined latency. In some examples, the user device can display instructions to position the user device a specified distance from the speaker, and can account for a time-of-flight of sound to propagate along the specified distance.

An audio output device includes a first communication interface configured to receive a first digital signal from an electronic device and transmit a second digital signal to the electronic device; at least one processor configured to convert the received first digital signal into a first analog signal and convert a second analog signal into the second digital signal; and a frequency modulation (FM) antenna configured to obtain FM signals to output the FM signals to the electronic device through the first communication interface. A ground terminal of the at least one processor is connected to a first terminal of the first communication interface, the FM antenna is connected to a second terminal of the first communication interface, and the FM signals are transmitted from the FM antenna to the second terminal of the first communication interface.

The disclosure relates to a method and apparatus for acquiring spatial division information. The method includes controlling a sound source device to play a first sound signal; obtaining a second sound signal that is a sound signal collected by a sound collecting device when the first sound signal is propagated to the sound collecting device; obtaining direct intensity information based on the second sound signal, wherein the direct intensity information indicates an intensity of a direct sound signal in the second sound signal, wherein the direct sound signal is a sound signal that is generated by the sound source device and reaches the sound collecting device without physical reflection; and obtaining spatial division information based on the direct intensity information, wherein the spatial division information indicates whether the sound source device and the sound collecting device are in a same spatial zone.

A mute control circuit used upon power-on or power-off comprises a charge/discharge module, a first switch module and a second switch module. Upon power-on or power-off, charging or discharging is performed between the charge/discharge module and a power supply end. Upon charging or discharging, the charge/discharge module outputs a first level to the first switch module to control turning on of the same, and the first switch module outputs a second level to the second switch module to control turning on of the second switch module, such that the second switch module outputs a high level to a mute circuit to activate operation of the mute circuit. Also provided are a control method and an audio device.

A hearing aid system includes an image capturing device capturing an image, microphones, an audio processing device connected with the image capturing device and the microphones, and an audio output device connected with the audio processing device. The audio processing device, by using classification models, performs analysis on the image to determine one of the classification models, controls the microphones to receive sound according to a plan which corresponds to the classification model, and operates in a mode corresponding to the plan to perform audio signal processing on collected audio signal(s) generated by the microphones so as to generate a processed audio signal, based on which the audio output device outputs sound.