Abstract: Disclosed embodiments provide flexible performance, high dynamic range, microelectromechanical (MEMS) multipath digital microphones, which allow seamless, low latency transitions between audio signal paths without audible artifacts over interruptions in the audio output signal. Disclosed embodiments facilitate performance and power saving mode transitions maintaining high dynamic range capability.

Abstract: Disclosed embodiments provide flexible performance, high dynamic range, microelectromechanical (MEMS) multipath digital microphones, which allow seamless, low latency transitions between audio signal paths without audible artifacts over interruptions in the audio output signal. Disclosed embodiments facilitate performance and power saving mode transitions maintaining high dynamic range capability.

Abstract: Acoustic activity detection is provided herein. Operations of a method can include receiving an acoustic signal at a micro-electromechanical system (MEMS) microphone. Based on portions of the acoustic signal being determined to exceed a threshold signal level, output pulses are generated. Further, the method can include extracting information representative of a frequency of the acoustic signal based on respective spacing between rising edges of the output pulses.

Abstract: Technologies are provided for adaptive control of bias settings in a digital microphone. In some embodiments, a device includes a first component that provides data indicative of a clock frequency of operation in a functional mode of a digital microphone. The clock frequency clocks one or more microphone components having switching activity. The device also can include a second component that determines, using the clock frequency, an amount of bias current to supply to at least a first microphone component of the one or more microphone components. The device can further include a memory device that retains control parameters that include at least one of a first subset of parameters defining a relationship between current and frequency and a second subset of parameters defining a quantization of the relationship. The quantization including multiple bias current levels for respective frequency intervals.

Abstract: Acoustic activity detection is provided herein. Operations of a method can include receiving an acoustic signal at a micro-electromechanical system (MEMS) microphone. Based on portions of the acoustic signal being determined to exceed a threshold signal level, output pulses are generated. Further, the method can include extracting information representative of a frequency of the acoustic signal based on respective spacing between rising edges of the output pulses.

Abstract: Exemplary multipath digital microphones described herein can comprise exemplary embodiments of automatic gain control and multipath digital audio signal digital signal processing chains, which allow low power and die size to be achieved as described herein, while still providing a high DR digital microphone systems. Further non-limiting embodiments can facilitate switching between multipath digital audio signal digital signal processing chains while minimizing audible artifacts associated with either the change in the gain automatic gain control amplifiers switching between multipath digital audio signal digital signal processing chains.

Abstract: Exemplary multipath digital microphones described herein can comprise exemplary embodiments of automatic gain control and multipath digital audio signal digital signal processing chains, which allow low power and die size to be achieved as described herein, while still providing a high DR digital microphone systems. Further non-limiting embodiments can facilitate switching between multipath digital audio signal digital signal processing chains while minimizing audible artifacts associated with either the change in the gain automatic gain control amplifiers switching between multipath digital audio signal digital signal processing chains.

Abstract: Acoustic activity detection is provided herein. Operations of a method can include receiving an acoustic signal at a micro-electromechanical system (MEMS) microphone. Based on portions of the acoustic signal being determined to exceed a threshold signal level, output pulses are generated. Further, the method can include extracting information representative of a frequency of the acoustic signal based on respective spacing between rising edges of the output pulses.

Abstract: Disclosed embodiments provide flexible performance, high dynamic range, microelectromechanical (MEMS) multipath digital microphones, which allow seamless, low latency transitions between audio signal paths without audible artifacts over interruptions in the audio output signal. Disclosed embodiments facilitate performance and power saving mode transitions maintaining high dynamic range capability.

Abstract: Disclosed embodiments provide flexible performance, high dynamic range, microelectromechanical (MEMS) multipath digital microphones, which allow seamless, low latency transitions between audio signal paths without audible artifacts over interruptions in the audio output signal. Disclosed embodiments facilitate performance and power saving mode transitions maintaining high dynamic range capability.

Abstract: Technologies are provided for adaptive control of bias settings in a digital microphone. In some embodiments, a device includes a first component that provides data indicative of a clock frequency of operation in a functional mode of a digital microphone. The clock frequency clocks one or more microphone components having switching activity. The device also can include a second component that determines, using the clock frequency, an amount of bias current to supply to at least a first microphone component of the one or more microphone components. The device can further include a memory device that retains control parameters that include at least one of a first subset of parameters defining a relationship between current and frequency and a second subset of parameters defining a quantization of the relationship. The quantization including multiple bias current levels for respective frequency intervals.

Abstract: Exemplary multipath digital microphones described herein can comprise exemplary embodiments of automatic gain control and multipath digital audio signal digital signal processing chains, which allow low power and die size to be achieved as described herein, while still providing a high DR digital microphone systems. Further non-limiting embodiments can facilitate switching between multipath digital audio signal digital signal processing chains while minimizing audible artifacts associated with either the change in the gain automatic gain control amplifiers switching between multipath digital audio signal digital signal processing chains.

Abstract: Exemplary multipath digital microphones described herein can comprise exemplary embodiments of automatic gain control and multipath digital audio signal digital signal processing chains, which allow low power and die size to be achieved as described herein, while still providing a high DR digital microphone systems. Further non-limiting embodiments can facilitate switching between multipath digital audio signal digital signal processing chains while minimizing audible artifacts associated with either the change in the gain automatic gain control amplifiers switching between multipath digital audio signal digital signal processing chains.

Abstract: Exemplary multipath digital microphones described herein can comprise exemplary embodiments of automatic gain control and multipath digital audio signal digital signal processing chains, which allow low power and die size to be achieved as described herein, while still providing a high DR digital microphone systems. Further non-limiting embodiments can facilitate switching between multipath digital audio signal digital signal processing chains while minimizing audible artifacts associated with either the change in the gain automatic gain control amplifiers switching between multipath digital audio signal digital signal processing chains.

Abstract: Facilitating an enhanced linearity and acoustic overload point of a sensor is presented herein. A system can comprise a first conductive component that is biased at a first direct current (DC) voltage; a second conductive component that is biased at a second DC voltage that is opposite in polarity to the first DC voltage; a third conductive component that is capacitively coupled to the first conductive component and the second conductive component; and a feedback component that generates a non-inverted output signal, comprising a sum of buffered signals generated via capacitive coupling between the third conductive component and the first and second conductive components, generates an inverted output signal comprising an amplified inversion of the non-inverted output signal, and applies the inverted output signal to the third conductive component.

Abstract: Facilitating an enhanced linearity and acoustic overload point of a sensor is presented herein. A system can comprise a first conductive component that is biased at a first direct current (DC) voltage; a second conductive component that is biased at a second DC voltage that is opposite in polarity to the first DC voltage; a third conductive component that is capacitively coupled to the first conductive component and the second conductive component; and a feedback component that generates a non-inverted output signal, comprising a sum of buffered signals generated via capacitive coupling between the third conductive component and the first and second conductive components, generates an inverted output signal comprising an amplified inversion of the non-inverted output signal, and applies the inverted output signal to the third conductive component.

Abstract: A feedback signal is employed to facilitate enhancing an acoustic overload point and electrostatic discharge protection of a sensor component and associated circuit. The sensor component comprises a backplate component and a diaphragm component. The backplate component is biased to a low-level voltage associated with a ground. The diaphragm component is biased to a defined high-voltage associated with a charge pump. The diaphragm component generates a signal based on movement of the diaphragm component in relation to the backplate component in response to the input signal. A feedback component receives the signal from the diaphragm component and generates an inverted signal based on the signal. The inverted signal or a processed inverted signal, which can be derived from a filter component that filters the inverted signal, is transmitted to the backplate component.

Abstract: A feedback signal is employed to facilitate enhancing an acoustic overload point and electrostatic discharge protection of a sensor component and associated circuit. The sensor component comprises a backplate component and a diaphragm component. The backplate component is biased to a low-level voltage associated with a ground. The diaphragm component is biased to a defined high-voltage associated with a charge pump. The diaphragm component generates a signal based on movement of the diaphragm component in relation to the backplate component in response to the input signal. A feedback component receives the signal from the diaphragm component and generates an inverted signal based on the signal. The inverted signal or a processed inverted signal, which can be derived from a filter component that filters the inverted signal, is transmitted to the backplate component.

Abstract: Systems and techniques for processing a signal associated with a microphone are presented. The system includes a microphone component and a preamplifier. The microphone component is contained in a housing. The preamplifier includes an input buffer that receives a signal generated by the microphone component. The input buffer also generates an output signal that comprises a direct current (DC) voltage offset in comparison to the signal, where the preamplifier controls a degree of the DC voltage offset based on a control signal.

Abstract: Systems and techniques for processing a signal associated with a microphone are presented. The system includes a microphone component and a preamplifier. The microphone component is contained in a housing. The preamplifier includes an input buffer that receives a signal generated by the microphone component. The input buffer also generates an output signal that comprises a direct current (DC) voltage offset in comparison to the signal, where the preamplifier controls a degree of the DC voltage offset based on a control signal.