An electronic device may comprise audio processing circuitry and a universal serial bus (USB) connector having a first contact and a second contact. In a first mode of operation, the audio processing circuitry is configured to output one or more audio signals carrying music and/or voice via the first contact and the second contact. In a second mode of operation, the audio processing circuitry is configured to output a signal for delivering supply current via the first contact and the second contact. While the electronic device is in the first mode of operation, a gain and/or volume limit of the audio processing circuitry may be set to a first level, and while the electronic device is in the second mode of operation, the gain and/or volume limit of the audio processing circuitry may be set to a second level that is higher than the first level.

Processes and devices for equalizing an audio system that is adapted to use a loudspeaker to transduce test audio signals into test sounds. The processes and devices can involve the use of infrared signals to convey information in one or both directions between the audio system and a portable computer device that captures test sounds, calculates audio parameters that can be used in the equalization process, and transmits these audio parameters back to the audio system for its use in equalizing audio signals that are played by the audio system.

An earpiece having a longitudinal axis and having an earpiece housing comprising a proximal end and a distal end, a receiver located within the earpiece housing, a wire extending from the earpiece housing, the wire comprising a plurality of conductors including a ground conductor and a first conductor, and an intermediate module located within the earpiece housing, the intermediate module comprising a primary set of connector terminals and a secondary set of connector terminals, the primary set of connector terminals including wire connector terminals electrically connected to the plurality of conductors of the wire, and the secondary set of connector terminals comprising a first secondary connector terminal and a second secondary connector terminal, wherein the first secondary connector terminal and the second secondary connector terminal are each connected to a wire connector terminal of the primary set of connectors.

A method includes providing a first data channel configured for a transmission of acoustic data between a first microphone and a controller, providing a second data channel configured for a transmission of acoustic data between a second microphone and the controller, and transmitting non-acoustic data generated by the first microphone via the second data channel.

A headset may comprise at least one ear cup and an ear cup shaper configurable into at least two configurations. When the ear cup shaper is configured in a first of the configurations, the ear cup is shaped to contact the temple of a wearer of the headset. When the adjustable ear cup shaper is configured in a second of the configurations, the ear cup is shaped to accommodate the temple piece of a pair of eyeglasses of a wearer of the headset. The ear cup may comprise a filler material such as foam, and the adjustable ear cup shaper when configured in the second of the configurations may create a depression in the foam. The adjustable ear cup shaper may comprise a strap and/or a plunger.

A headset comprises an ear cup, at least one speaker, an adjustable ear cup shaper, and circuitry. The ear cup shaper is adjustable into at least two configurations, wherein a first of the configurations creates no depression or a first amount of depression in the ear cup and a second of the configurations creates a second amount of depression in the ear cup, where the second amount is greater than the first amount. The circuitry is operable to determine which one of the configurations the ear cup shaper is configured into, and set an audio setting applied to an audio signal output to the speaker based on the determined one of the configurations.

A wireless power transfer system is provided for mobile charging of one or more in-use earphones. The wireless power transfer system includes a wireless power transfer antenna configured for coupling with an antenna of a wireless receiver system within each earphone while the earphone is in the ear of a user. An input power source is linked to the wireless transmission system, and a retention mechanism maintains the wireless transmission system in a coupled relationship with the wireless receiver system of the earphone while the earphone is in the ear of the user.

A portable speaker system includes a tunnel with at least one internal speaker facing inwardly into the tunnel such that acoustic resonance amplifies desirable frequencies of sounds emitted by the internal speaker. The portable speaker system includes solar panels and is waterproof. A display touch screen permits operation of the speaker system. The portable speaker system is adapted to receive input of audio files from a variety of sources. A non-transitory storage medium permits storage of the audio files and a CPU is programmed to permit playback of audio files in a desired sequence or from a desired live-streaming source. The smart speaker can utilize Bluetooth, Wi-Fi, and/or telecommunication connectivity to receive and/or play audio files, and can queue files from multiple sources for playback.

A device comprising: at least two interfaces for interconnecting between at least one audio source and at least one audio sink device; and unidirectional circuitry configured to allow transmission of an audio signal only from said at least one audio source to said at least one audio sink device.

An apparatus for attracting an animal to an area includes a housing, recordable memory media contained within the housing for storing a pre-recorded ultrasonic sound and a prerecorded audible sound. An audible sound emitter contained within the housing is also provided for emitting the prerecorded audible sound. Further, an ultrasonic sound emitter contained within the housing for emitting the prerecorded ultrasonic sound and second pre-recorded sounds that simulate first and second distinct sounds each made by a species of animal in the environment. A user interface, such as a hand held unit, is also provided to play back the audible and ultrasonic sounds simultaneously to produce a blended sound for attracting an animal. The apparatus may further include a first amplifier for amplifying the audible sound and a second amplifier for amplifying the ultrasonic sound. A low pass filter for filtering the audible sounds and a high pass filter for filtering the ultrasonic sounds from a mono file may also be included. The ultrasonic sound simulates ultrasonic vocal sounds of animals and the audible pre-recorded sound simulates audible vocal sounds of animals.