Abstract: Aspects of the present disclosure provide an electro-acoustic transducer that serves as an acoustic transducer and as an NFMI coil. The use of a single coil eliminates the need for a dedicated NFMI coil, thereby reducing design complexity and cost of production. Circuity is provided to allow selective filtering of acoustic and NFMI signals so the acoustic and NFMI signals may coexist in a frequency-divisional multiplexing fashion on a same electro-acoustic transducer coil.

Abstract: Aspects of the present disclosure provide an electro-acoustic transducer that serves as an acoustic transducer and as an NFMI coil. The use of a single coil eliminates the need for a dedicated NFMI coil, thereby reducing design complexity and cost of production. Circuitry is provided to allow selective filtering of acoustic and NFMI signals so the acoustic and NFMI signals may coexist in a frequency-divisional multiplexing fashion on a same electro-acoustic transducer coil.

Abstract: Aspects of the present disclosure provide an improved material structure for a human body model. The human body model comprises (1) a first layer comprising a first material, (2) a second layer, comprising a second material, underneath the first layer, and (3) a third layer, comprising a third material, underneath the second layer. The dielectric constant of the second material is less than a dielectric constant of the first material and less than a dielectric constant of the third material. According to an aspect, the thickness of the first and/or second layer may represent the thickness of human skin and fat, respectively. The thickness of one or more layers may vary based on a location on the human body model.

Abstract: Aspects of the present disclosure provide an improved material structure for a human body model. The human body model comprises (1) a first layer comprising a first material, (2) a second layer, comprising a second material, underneath the first layer, and (3) a third layer, comprising a third material, underneath the second layer. The dielectric constant of the second material is less than a dielectric constant of the first material and less than a dielectric constant of the third material. According to an aspect, the thickness of the first and/or second layer may represent the thickness of human skin and fat, respectively. The thickness of one or more layers may vary based on a location on the human body model.

Abstract: A wireless communication network includes a communication source device, such as a Bluetooth digital music player and a communication destination device, such as a Bluetooth headphone or speaker device. The communication source device is configured to transmit audio signals, such as encoded electrical signals in the audio frequency band, to the communication destination device via a wireless or wired audio communication channel. Upon receiving the audio signal, the communication destination device is configured to uniquely identify the communication source device and subsequently enter a discoverable mode to establish a wireless communication channel with the source device, such as via Bluetooth pairing. With such a configuration, the wireless communication channel connection process can be automated requiring little to no user action on either the source or destination device to accomplish the wireless pairing process.