The embodiments of the present disclosure provide a headset device with speakers, a signal processing method and an analysis system thereof. The headset device with speakers includes a speaker assembly and a first sound receiving assembly, and provides noise reduction effect on surrounding environment by the signal processing method for the headset with speakers. The speaker assembly includes a signal processing module. The signal processing module performs calibration by the sound transfer function to solve the playback influence arisen from the sound transmission distance between the speaker assembly and the human ear. The signal processing module performs calibration to calibrate the signal outputted by the speaker assembly to cancel the environmental noise, so that it can effectively solve the problem of attenuation of the sound received by the human ear due to the sound transmission distance of the open speaker.

An earpiece for real-time audio processing of ambient sound includes an ear bud that provides passive noise attenuation to the earpiece such that exterior ambient sound is substantially reduced within an ear of a wearer, an exterior microphone that receives ambient sound and converts the received ambient sound into analog electrical signals, and an analog-to-digital converter that converts the analog electrical signals into digital signals representative of the ambient sounds. The earpiece further includes a digital signal processor that performs a transformation operation on the digital signals according to instructions received from a mobile device, the transformation operation transforms the digital signals into modified digital signals, a digital-to-analog converter that converts the modified digital signals into modified analog electrical signals, and a speaker that outputs the modified analog electrical signals as audio waves.

A vehicle includes an engine and/or powertrain producing noise that is audible in a passenger compartment of the vehicle when the engine and/or powertrain is running. An active noise control arrangement includes a first loudspeaker disposed within a passenger compartment of the vehicle. A digital signal processor receives audio data and transmits an audio signal to the first loudspeaker dependent upon the audio data. A microphone is disposed within the passenger compartment and converts the sound from the first loudspeaker and the noise within the passenger compartment into a microphone signal. The microphone signal is transmitted to the digital signal processor, and the digital signal processor modifies the audio signal such that the audio signal attenuates the noise in the passenger compartment. A vehicle processor transmits a simulated noise signal to a second loudspeaker for use in testing effectiveness of the active noise control arrangement in attenuating noise when the engine and/or powertrain is not running and not producing noise.

A system for providing audio output. The system includes a device, e.g. a mobile phone connectable to one or more earphones. The device includes a computing platform having a processor; an audio unit configured to generate one or more output signals of arbitrary amplitude to the earphone(s); and at least one microphone configured to record the ambient power level during signal output. The user indicates his/her hearing of the output signals whereby a proportionality constant is recorded for each frequency of the output signals. The processor is configured to: analyze the proportionality constant for each frequency of one or more feedback signals from the earphone(s) to yield calibration data; adjust the amplitude or frequency based on the calibration data; generate one or more audiograms resulting from a hearing test; and adjust the device power level according to the received one or more audiograms.

A sound system is provided with a headphone that includes a transducer and at least one microphone. The sound system also includes an equalization filter and a loop filter circuit. The equalization filter is adapted to equalize an audio input signal based on at least one predetermined coefficient. The loop filter circuit includes a leaky integrator circuit that is adapted to generate a filtered audio signal based on the equalized audio input signal and a feedback signal indicative of sound received by the at least one microphone, and to provide the filtered audio signal to the transducer.

Ambient sound is converted into digital signals. A processor performs active noise cancellation and/or a transformation operation that is distinct from the active noise cancellation on the digital signals. The active noise cancellation and the transformation operation transform the digital signals into modified digital signals. The modified digital signals are converted into modified analog signals. The modified analog signals are outputted as audio waves. An interior microphone is configured to output an output signal to the processor in response to receiving the modified analog signals. In response to receiving the output signal from the interior microphone, the processor is configured to determine whether the modified digital signals produce desired audio waves.

A system and method receives one or more captured signals through a captured audio path and produces one or more playback signals through a playback audio path. The system and method executes one or more signal processing functions and measures the delays within the playback audio path and captured audio path during operation of the one or more signal processing functions. The system and method stores the measured delays in a memory and compensates the one or more signal processing functions for the playback delay and the capture delay.

With the noise reduction device (300), in identifying an acoustic transfer function that includes a path from the control speaker (340) to the error microphone (350) or the noise microphone (320) by outputting an identification sound from the control speaker (340) and detecting the identification sound with the error microphone (350) or the noise microphone (320), the identification controller (338) is configured to identify the acoustic transfer function by generating the identification sound from the white noise generator (337) when the seat detector (582) has detected that the seat is in the actual usage state for noise reduction.

An audio processing scheme is described. In an example, an apparatus comprises: at least two acoustic sensors through which audio content is received; at least one other sensor; an audio processor connected to the sensors and configured to receive audio information from the acoustic sensors and other information from the other sensor. The audio processor is configured to determine a use case of the apparatus based on the audio information and the other information. The audio processor is configured to adjust at least one audio processing scheme for the apparatus based on the determined use case. In other examples, a method and a computer program product are described.

An earphone device/test station pairing (1, 2) includes an earphone device (1) including: at least one electroacoustic driver (32, 33, 34); a digital module (31) including a processor module; and a digital interface configured to connect the earphone device (1) to a media/communications device having a digital output; a test station (2) including at least one transducer (40, 42, 6), the test station (2) being operative to communicate with the earphone device (1) via the digital interface to allow data transmission between the earphone device (1) and the test station (2) during a test/configuration procedure; and a test module (4) for performing automated testing of the earphone device (1) when mounted on/connected to the test station (2).