Abstract: Predefined static enumeration systems and processes for dynamic enumeration buses are disclosed. In one aspect, the dynamic enumeration bus may be a SOUNDWIRE™ bus. Slave devices are provided predefined device numbers which are provided to a master. The master uses the provided predefined device number to populate an address table. By providing the predefined device numbers, an iterative enumeration process may be reduced or eliminated, saving time and/or power.

Abstract: A method includes generating a command at a first microphone and sending the command from the first microphone to a second microphone. The command is sent to the second microphone via a bus that is coupled to the first microphone and to the second microphone.

Abstract: An accessory device having multiple speakers and/or microphones to perform a number of audio functions, for use with mobile devices, are provided. The audio transducers (e.g., microphones and/or speakers) may be housed in one or more extendable and/or rotationally adjustable arms. To compensate for the unwanted signal feedback between the speakers and microphones, acoustic echo cancellation may be implemented to determine the proper distance and relative location between the speakers and microphones. Acoustic echo cancellation removes the echo from voice communications to improve the quality of the sound. The removal of the unwanted signals captured by the microphones may be accomplished by characterizing the audio signal paths from the speakers to the microphones (speaker-to-microphone path distance profile), including the distance and relative location between the speakers and microphones.

Abstract: Electronic circuitry is described. The electronic circuitry includes a first microelectromechanical system (MEMS) structure that exhibits a first frequency response in a voice frequency range and that captures a first signal. The electronic circuitry also includes a second MEMS structure coupled to the first MEMS structure. The second MEMS structure exhibits a second frequency response in an ultrasound frequency range and captures a second signal. A combination of the first frequency response and the second frequency response achieves a target frequency response in a combined frequency range.

Abstract: A method includes generating a command at a first microphone and sending the command from the first microphone to a second microphone. The command is sent to the second microphone via a bus that is coupled to the first microphone and to the second microphone.

Abstract: Predefined static enumeration systems and processes for dynamic enumeration buses are disclosed. In one aspect, the dynamic enumeration bus may be a SOUNDWIRE™ bus. Slave devices are provided predefined device numbers which are provided to a master. The master uses the provided predefined device number to populate an address table. By providing the predefined device numbers, an iterative enumeration process may be reduced or eliminated, saving time and/or power.

Abstract: Mobile communication devices, having multiple speakers and/or microphones to perform a number of audio functions, for use with mobile devices, are provided. The microphones may be housed within the communication device housing. To compensate for the unwanted signal feedback between the speakers and microphones, acoustic echo cancellation may be implemented to determine the proper distance and relative location between the speakers and microphones. Acoustic echo cancellation removes the echo from voice communications to improve the quality of the sound. The removal of the unwanted signals captured by the microphones may be accomplished by characterizing the audio signal paths from the speakers to the microphones (speaker-to-microphone path distance profile), including the distance and relative location between the speakers and microphones. The optimal distance and relative location between the speakers and microphones is provided to the user to optimize performance.

Abstract: Electronic circuitry is described. The electronic circuitry includes a first microelectromechanical system (MEMS) structure that exhibits a first frequency response in a voice frequency range and that captures a first signal. The electronic circuitry also includes a second MEMS structure coupled to the first MEMS structure. The second MEMS structure exhibits a second frequency response in an ultrasound frequency range and captures a second signal.