Abstract: The present invention is directed most particularly to wireless communication systems for interconnection with telephone systems, and more particularly to methods and apparatus to suppress unwanted and annoying audio spikes or bursts that infiltrate the wireless system from ultimately reaching the user's earpiece. An embodiment of the invention is directed to a telephone headset amplifier system with a noise blanking or squelching capability, which attenuates the incoming audio signal when the incoming signal exceeds a predetermined threshold.

Abstract: Telephone sets can be fitted with auxiliary headset features but they will still require mechanical lifters to raise and lower the handset in response to a call. The lifter needs to be in circuit with some portion of the telephone set but it is impractical to modify an unlimited number of disparate set types. To solve this problem, the audio line cord, which is easily detachable, is passed through the lifter system and manually operable remote switch. The switch issues signals in tandem with audio signals on the handset cord and the lifter system differentiates the signals to respond only to switching signals intended to lift or lower the handset from its cradle.

Abstract: A headset with an adjustable microphone boom which can be adjusted to and from a position near the mouth of a user and is mounted in a housing by a friction part being coupled to a flexible friction coupling which is configured in a plate in that co-operating plates are stamped out of the plate and are connected to the plate by means of flexible arms. The friction part has a shaft which can be accommodated in a bearing defined by recesses which are configured partly in the inside of the housing and partly in the plate. The microphone boom, the housing and the plate with friction coupling are held together by means of a locking ring. In this way a stable, adjustable microphone boom is provided which does not become loose with time, understood in the way that no matter in which position and regardless of how frequently the position is changed, the microphone boom will remain secured with a sufficient force in the friction coupling.

Abstract: An earring for a headset comprising a speaker and possibly a transducer or microphone, is arranged to be worn on one ear of a user so that the earring surrounds the outer ear of the user, and is arranged so that the size of the earring is adjustable. With the object of providing simple adjustment to the size of the ear of the user, the earring is produced with a hard part and a soft part, where the second part can be introduced into the first part. The adjustment of the size of the earring is effected with an adjustment button being secured to the soft part, in that the button with the soft part can be displaced in a channel, which is provided longitudinally in the hard part. The channel is possibly configured by the hard part being configured with a closing part. With the invention an adjustment arrangement for an earring for a headset is thus provided, which is easy for the user to operate, also when the earring is placed on the ear of a user.

Abstract: A headset which consists of an ear hook and a holding ring that are interconnected by means of an attachment element formed by a hinge, which is made of a deformable, flexible material that may be an elastomer, such as EPOM, TPE or Santroprene®The hinge has a four-sided hole in which one end of the ear hook may be received, said end being formed with a four-sided shape in dimensions corresponding to the hole. Teeth are formed in the hole which are capable of cooperating with depressions formed on the four-sided end. The invention provides an attachment element which may be manipulated several times when adjusting the position of the ear hook relative to the holding ring, without play occurring in the hinge at any time, since there are no mutually movable slide bearing parts, such as shafts that can slide. In other words, a stable attachment is ensured between the ear hook and the holding ring in the positions selected by a user.

Abstract: The present invention is directed most particularly to wireless communication systems for interconnection with telephone systems, and more particularly to methods and apparatus to suppress unwanted and annoying audio spikes or bursts that infiltrate the wireless system from ultimately reaching the user's earpiece. An embodiment of the invention is directed to a telephone headset amplifier system with a noise blanking or squelching capability, which attenuates the incoming audio signal when the incoming signal exceeds a predetermined threshold.

Abstract: Headset for connection to a telephone apparatus, said headset comprising a capsule with a built-in receiver, and on which there is mounted a boom with a microphone. The headset is connected to a telephone apparatus by means of a wire with associated jack connection, and the headset has associated amplification and adjustment circuits for both the microphone and receiver, manual operating elements for the setting of said amplification and adjustment circuits, and switch elements for changeover depending partly on the type of microphone in the telephone apparatus and partly on the polarity of the telephone apparatus' microphone and receiver wires. The amplification and adjustment circuits are built into the headset capsule, so that the use of a separate connection box is avoided, and the manual operation elements are placed on the capsule. The switching elements consist of a multi-position switch, which is placed in the capsule in such a manner that it is accessible for operation.

Abstract: A headset with a headband is equipped with at least one cup in which a male or female plug is arranged. The cup is intended for the mounting of a speaker or a speaker with microphone arm, said speaker or speaker with microphone arm being also provided with a male or female plug adapted to be connected to the male or female plug in the cup. The headband of the headset is hollow so that the wire may be run from one side of the headset to the other side. Hereby, the speaker and/or speaker with microphone arm of the headset may easily be replaced, without having to scrap the entire headset. Thus, it is possible to upgrade the headset currently for technical as well as aesthetic reasons. In an embodiment, the headset is provided with a cup at one side and at the other side with a T-member which constitutes a support part against a user's head.

Abstract: An acoustic transmission connection, e.g. for a headset (13), comprises a sound tube (2) through which speech signals can be transmitted from a first end (16) to a transducer, e.g. a microphone, in a housing or a housing part (3) of the headset. In the sound tube (2) and in the housing part (3), means are provided for acoustic impedance matching and possibly means for achieving acoustic directivity.

Abstract: A telephone headset apparatus is disclosed. This headset apparatus includes a body having a microphone at one end and a transducer at the opposite end, an earhook, for attaching the apparatus to the ear of the operator, and a mechanism, contained within the body in a movable engagement, for holding the earhook in a frictional engagement that allows for movement of the earhook, with three degrees of freedom. The mechanism is located at a point within the body where upon adjustment of the earhook by the operator (i.e., rotated, tilted, pivoted) the headset apparatus remains properly balanced and within the sound envelope of an operator, for uninterrupted operation.

Abstract: The present invention concerns an adaptive headset interface for amplification and adjustment of signals between a random headset and a random terminal. The adaptive headset interface comprises digital signal processors, and is further equipped with a modem block over which the adaptive headset can be programmed by a call to a computer over the telephone net, whereby instructions as well as test signals are transferred between the computer and the adaptive headset interface, so that an adjustment is achieved which takes into account the signal transfer in relation to a reference telephone line corresponding to a given standard, or an adjustment which corresponds to the levels which apply for the relevant terminal to which the adaptive headset interface is connected.