Abstract: The invention relates to a portable vocal booth (1) comprising a hood (2) that comprises a top (3), side walls (6), a front wall (4) and a rear portion (5) and is adapted to freely enclose a singer's head. The hood (2) comprises a rear part (R), which is intended to accommodate the singer's head and is open forwards and downwards and otherwise limited by the top (3), the side walls (6) and the rear portion (5), and a front part (F), which is intended to be in front of the singer's head and at the back is open towards the rear part (R) and is otherwise limited by the top (3), the side walls (6), the front wall (4) and a bottom wall (8), wherein a sound absorbing insert (16) is provided in the front part (F) inside the front wall (4). In the front part (F) between the sound absorbing insert (16) and the rear part (R) of the hood (2) a partition wall (17) of a sound absorbing material is arranged, and between the sound absorbing insert (16) and the partition wall (17) a gap (18) is provided.

Abstract: The invention relates to a portable vocal booth (1) comprising a hood (2) that comprises a top (3), side walls (6), a front wall (4) and a rear portion (5) and is adapted to freely enclose a singer's head. The hood (2) comprises a rear part (R), which is intended to accommodate the singer's head and is open forwards and downwards and otherwise limited by the top (3), the side walls (6) and the rear portion (5), and a front part (F), which is intended to be in front of the singer's head and at the back is open towards the rear part (R) and is otherwise limited by the top (3), the side walls (6), the front wall (4) and a bottom wall (8), wherein a sound absorbing insert (16) is provided in the front part (F) inside the front wall (4). In the front part (F) between the sound absorbing insert (16) and the rear part (R) of the hood (2) a partition wall (17) of a sound absorbing material is arranged, and between the sound absorbing insert (16) and the partition wall (17) a gap (18) is provided.

Abstract: An alcohol measuring device comprises an intake for receiving a user exhalation and a gas sensor. A connector of the measuring device is configured to be connected to a sound port of a terminal such as a cell phone, smart phone, tablet or a similar mobile device. The measuring device is arranged to transfer measurement data via said connector to said sound port of the terminal in the form of analogue signals representing sound. Duplex communication over the sound port is possible for transferring commands to the measuring device from the terminal.

Abstract: A security system for use on a boat with propulsion means, such as an engine, has a base unit mounted on the boat and a personal unit attached to the driver and each passenger. The base unit has a first radio unit and an RFID-reader with an antenna, and is in wireless communication with the personal unit. The personal unit has an RFID-transponder and a second radio unit, both with a unique identity, and a biometric unit that at correct attachment to the person send a biometric signal to the base unit. The communication utilizes RFID technology within a near range, but the system automatically handovers to radio technology when a larger area is to be covered. A field from the RFID reader activates the RFID-transponder, and if the identity is correct the person is registered as the driver and may start the boat. When the base unit loses communication with a personal unit different measures are initiated, such as activating an alarm.