Abstract: Methods and systems are disclosed for echo suppression of an input audio signal. A multimedia system and a remote control unit are configured to adaptively and dynamically preform calibration processes for obtaining sets of echo suppression parameters. The sets of echo suppression parameters are used to generate an audio signal from an input audio. When rendered by a speaker, the generated audio signal produces echo-suppressed sound of the input audio signal at one of more locations.

Abstract: A sound management system for use by a user located within an environment includes a memory device for storing a selection of sounds. The sounds can be music and/or various “colors” of noise (e.g., white, pink, and brown). A controller is used to select one particular stored sound based on a measured biological condition of the user, such as stress or fatigue, or an environmental condition of the environment, such as ambient noise. According to one embodiment, the system is used in conjunction with a sit/stand desk and the sound selection is made in response to changes in the desk height. The selected sound is selected to help abate or mitigate distracting sounds in the environment, such as people talking. The selected sounds are played to the user through headphones worn by the user, or through nearby speakers.

Abstract: An apparatus including a first speaker configured to output higher-frequency sound from among sound of a channel via at least one slit, and a second speaker configured to output lower-frequency sound from among the sound of the channel via at least one other slit. The at least one slit may have a thickness that is less than a wavelength of sound emitted.

Abstract: Methods and systems for augmenting an audio signal are provided for herein. In some embodiments, a method can be performed by a sound processing system of a computing device. In such embodiments, the sound processing system can receive a captured audio signal from a microphone coupled with the sound processing system. The sound processing system can then produce an augmented audio signal by selectively filtering the captured audio signal based on a physical location of the computing device. This resulting augmented audio signal can reflect an effect associated with the physical location of the computing device. The augmented audio signal can then be output, by the sound processing system, to a speaker coupled with the computing device to enable consumption of the augmented audio signal by a user of the computing device. Other embodiments may be described and/or claimed herein.

Abstract: A headphone is disclosed that includes a headband and a pair of sound emitting units. The headband is a band-shaped body that is curved in an arch shape. The sound emitting units each have a flat shape and are disposed at both ends of the headband. The sound emitting units each include a piezoelectric actuator of a flat film shape disposed on a flat plane of a sound emission housing of a flat shape. The piezoelectric actuator includes a piezoelectric film made of an organic piezoelectric material such as PLLA, and first and second driving conductors disposed on opposing principal planes of the piezoelectric film.

Abstract: A method for use in the fitting of a hearing aid comprises the steps of providing a sound recording of a user environment, feeding the sound recording to the hearing aid as a sound input signal (8a), processing the sound input signal according to a scheme defined by preselected settings of a number of parameters so as to provide a processed signal (8b), adjusting the setting of at least one parameter, performing a statistical analysis of the magnitude of the processed signal or of the input signal in at least one frequency band, which statistical analysis is reset when a parameter is adjusted during the fitting, and displaying a graphical representation (10, 11) of the results of said statistical analysis. The invention also provides a system for fitting a hearing aid and a hearing aid.

Abstract: A voice signal processing device connected to a smart device is provided. The voice signal processing device is connected to a smart phone, a tablet computer or the like and includes a voice signal input and output function mounted thereon. The voice signal processing device returns a sound generated by the smart device or a sound generated from the exterior into the smart device as a high-quality sound and is configured to extract a voice signal from a wire coupled to the smart device and the ear receiver and configured to input the extracted voice signal into the input terminal of the microphone of the smart device. A voice signal output from the smart device is configured to be extracted and conveniently input into the smart device and loss and distortion is minimized in the process of extracting and returning the voice signal.

Abstract: An earphone control method, an earphone control system and an earphone. The earphone control method includes: selecting a motion state judgement parameter of a wearer for controlling an earphone and setting an alert condition according to the selected motion state judgement parameter; real-timely monitoring and acquiring behavior data of the earphone wearer; calculating the motion state judgement parameter by using the acquired behavior data to obtain a motion state judgement parameter value; and judging whether or not the motion state judgement parameter value satisfies the alert condition; if the motion state judgement parameter value satisfies the alert condition, determining to enter an earphone alert state and controlling to perform corresponding alert operation on the earphone.

Abstract: An electronic device is provided. The electronic device may output a sound output event through a speaker at an output volume, generate a predicted input waveform based on the output sound event, compare a level of an input sound received via a microphone with a predicted level of the predicted input waveform, determine when a level of the input sound is lower than a threshold value for a predetermined time, and control the output volume of the sound output event when the level of the input sound is lower than the threshold value for the predetermined time.

Abstract: A stereo-phonic frequency modulation receiver includes: a frequency modulation demodulation circuit, receiving a reception signal, and generating a demodulated signal according to the reception signal; a frequency-division demultiplexer, generating a sum signal, a difference signal and a pilot amplitude signal according to the demodulated signal; a dual sound channel separation circuit, generating a left-channel output signal and a right-channel output signal according to the sum signal and a weakened difference signal; and a weakening circuit, weakening the difference signal according to the pilot amplitude signal or a signal-to-noise ratio (SNR) to generate the weakened difference signal.

Abstract: A backward compatible system and method for using 4P audio jack in an electronic device to provide power and signal to headset with active noise cancellation (ANC) as well as accessories that require an external power are disclosed. The method involves automatically deciding at the electronic device accessory type after accessory insertion detected and choosing proper accessory communication mode based at least on the decided accessory type and accessory input signal. The accessory communication mode may be an accessory power mode or an accessory microphone mode.

Abstract: A reverberator based on a room response modal analysis is adapted to produce distortion, pitch and time manipulation effects, as well as gated and iterated reverberation. An example “modal reverberator” is a parallel collection of resonant filters, with resonance frequencies and dampings tuned to the modal frequencies and decay times of the space or object being simulated. In one example, the resonant filters are implemented as cascades of heterodyning, smoothing, and modulation steps, forming a type of analysis/synthesis architecture. By applying memoryless nonlinearities to the modulating sinusoids, distortion effects are produced, including distortion without intermodulation products. By using different frequencies for the heterodyning and associated modulation operations, pitch manipulation effects are generated, including pitch shifting and spectral “inversion.” By resampling the smoothing filter output, the signal time axis is stretched without introducing pitch changes.

Abstract: An audio file playing method and an apparatus are disclosed and are used to: when an audio file is played, expand a quantity of audio channel signals in the audio file and improve a playing effect of the audio file. The method is as follows: after the audio file is obtained, determining, whether the audio file includes an audio channel signal that can be played by the mobile device; if the audio file includes the audio channel signal that can be played by the mobile device, directly playing the audio channel signal. Therefore, when multiple mobile devices are used to play a same audio file, the mobile devices can avoid performing a same operation, thereby increasing a quantity of audio channels of the audio file, expanding a sound field of the audio file, and improving a playing effect of the audio file.

Abstract: A method for using a loudspeaker array that is housed in a loudspeaker cabinet to present audio content to a listener in a room includes receiving (1) an audio channel that includes audio content and (2) acoustical characteristics of the room. The method also produces (1) a first beamformer input signal from the audio channel and (2) a second beamformer input signal and a third beamformer input signal by decorrelating the audio channel and adjusting the audio channel in accordance with the acoustical characteristics of the room. The second and third beamformer input signals are different de-correlated versions of the audio channel. The method also generates driver signals from the first, second, and third beamformer input signals to drive the loudspeaker array to produce a main beam, a first ambient beam, and a second ambient beam, respectively. Other embodiments are also described and claimed.

Abstract: A switching device is adapted for a true diversity receiver and contains: a control switch defined between two microcontrollers of two antennas and configured to switch RF wireless microphone signals so that the two microcontrollers execute a single-receiving dual true diversity program or a dual-receiving single true diversity program. The RF wireless microphone signals are received by the two antennas and are decoded to sound signals by two digital decoders respectively, and the sound signals are sent to two audio signal processors by a multiplexer which corresponds to the two microcontrollers to switch the sound signals of a single-receiving dual true diversity or a dual-receiving single true diversity. Thereafter, the sound signals are output by a sound signal mixer.

Abstract: A microphone apparatus includes a microphone including first and second bi-directional microphone units having respective directional axes arranged on two straight lines passing through one point and radially extending with an interval of 120 degrees in a circumferential direction, and an omnidirectional microphone unit arranged in sound collection regions of the first and second bi-directional microphone units, and a signal synthesis unit that synthesizes at least one of respective non-inverted signals and inverted signals of the first and second bi-directional microphone units and an output signal of the omnidirectional microphone unit to generate a plurality of output signals having directional axes in mutually different directions.

Abstract: An inter-channel level difference (ICLD) processing method and apparatus are disclosed. A stereo audio signal is received, and the stereo audio signal is parsed frame by frame, to obtain an ICLD of each sub-band of each subframe of each frame of the stereo audio signal; a sum of absolute values of the ICLDs of each subframe of any frame of the stereo audio signal is calculated; and when an absolute value of a difference between the sums of the absolute values of the ICLDs of each two subframes of the any frame is less than a preset threshold, a weighted ICLD value of each sub-band of the any frame is calculated in a first weighting manner; or otherwise, a weighted ICLD value of each sub-band of the any frame is calculated in a second weighting manner.

Abstract: An audio transmitting table is disclosed which, in general, includes a table top, frame, a controller, and multiple microphones. The table top has one or more non-perpendicular contour edges. The frame is attached to the table top. The controller is attached to the audio transmitting table. The multiple microphones are embedded in the non-perpendicular contour edges. Each microphone transmits audio data to the controller.

Abstract: An example implementation involves a playback device receiving digital data representing audio content, the digital data encoded in a first format. The playback device causes one or more speaker drivers to playback the audio content. The playback device decodes a portion of the received digital data to convert the portion of the received digital data from the first format to a second format and transmits, via a network interface to a computing device of an identification system, the decoded portion of the received digital data. The playback device receives, from via the network interface from the identification system, metadata corresponding to the audio content, and in response, causes a control device to display a graphical representation of the received metadata, wherein causing the control device to display the graphical representation comprises sending, via the network interface to the control device, the received metadata to the control device.

Abstract: A noise-reducing fan system, comprising a motor, a fan body, a plurality of magnetic-inducing elements, a magnetic field generator and a noise-reducing sound source device, is provided. Here, the fan body is mounted on the motor. The fan body comprises a plurality of blades, on which the plurality of magnetic-inducing elements are disposed, respectively. The magnetic field generator, which may generate a magnetic field, is employed for driving the plurality of magnetic-inducing elements to vibrate the plurality of blades and generate a vibration sound, so that at least one portion of the noise emitted from the fan body as rotating may be counterbalanced. The noise-reducing sound source device is disposed on a predetermined position and may send out a noise-reducing sound, so that the noise-reducing sound may counterbalance at least the other portion of the noise emitted from the fan body as rotating.