Abstract: A control device (4) for connection of a telephone set (2) to at least one speaker (41) for reception of an audio signal and/or of at least one microphone (46) for transmission of an audio signal, comprising a digital signal processor (DSP) (10), an analog-to-digital converter (ADC) (11) to convert the digital signal coming from the telephone set (2) and/or from the microphone (46) to a digital signal that can be processed by the DSP (10), and a digital-to-analog converter (12) to convert the digital signal coming from the DSP (10) to an analog signal to be sent to the telephone set (2) and/or to the speaker (41), the control device (4) performing different functions, such as recognition of the voice conductors, storage and transmission of messages, equalization of the signal received and suppression of ambient noise.

Abstract: An electrical connector comprising two identical connector elements (6, 7) for connection of at least two electrical cables (5, 8) carrying respective conductor wires (13) connected to respective electrical contacts (12, 12′) provided inside the shell of each connector element so that, when the two connector elements are coupled, the electrical contacts are in contact with each other, wherein each of said electrical contacts (12, 12′) provides first snap-coupling means able to bring about a first snap connection during coupling of said connector elements (6, 7) and each shell of said connector elements (6, 7) provides second snap-coupling means able to bring about a second snap coupling to allow mechanical retention of said coupled connector elements.

Abstract: A headset comprising at least one earphone assembly (1) to support electroacoustic transducers (8, 30, 31), attachment means (40) to attach said earphone assembly to the lobe (11) of the user's ear, and acoustic signal conveying means (7, 8, 15, 16) and (4, 5) to convey the acoustic signal from the earphone assembly to the user's ear and from the user's mouth to the earphone assembly.

Abstract: An audio headset (100; 200) comprising at least one earphone element (2) for the diffusion of sound, destined to be positioned level with a user's ear supported by an elastic headband (3), and at least one head support element (115, 201), mounted on the elastic headband (3) in such a manner as to come to rest against a part of the user's skull to support the headset, discharging the weight of the headset and the pressure due to the elastic force exerted by the headband on to said part of the user's skull (3).