Abstract: An apparatus for controlling a plurality of devices with loudspeaker located in various rooms of a dwelling. The apparatus comprises a panel (1) with first user interface (2) and a second user interface (3) arranged side by side. The first user interface (2) comprises an interactive touch screen display with an indicator (11) for each room that contains an electronic device. The second user interface (3) comprises an adjustment element, for example a rotating wheel or a finger track indicator (8), for adjusting the audio level in a room in response to a correspondingly finger moving action on the second user interface (3). The audio level in a room is adjusted by the user holding one finger tip on the indicator (11) for that room while another finger is simultaneously moved on the second user interface (3).

Abstract: The invention relates to a loudspeaker system or device configured such that the sound field generated by the system or device is controllable. The system or device comprises Left (16, 18; 41, 43) and Right (15, 17; 42, 46) loudspeaker arrangements configured for radiating at least mid and high frequency sounds to the surroundings (R) and for controlling the sound radiation pattern (21, 22, 23, 24, 25, 26) of the left and right loudspeaker arrangements, respectively, such that the beam width and/or direction of the main lobe of the directivity pattern for the respective Left and Right loudspeaker arrangements can be varied; and at least one signal processor configured to process the signals to be provided to the loudspeakers of the respective loudspeaker arrangements such that the directional characteristics of the loudspeakers in each respective arrangement can be varied.

Abstract: A method for compensating for acoustic influence of a listening room on an acoustic output from an audio system including at least a left and a right loudspeaker, the method comprising determining a left frequency response and a right frequency response, designing a left compensation filter FL, and a right compensation filter FR, and during playback applying the left and right filters to left and right channel inputs. According to the invention, a target response in the listening position is simulated, and the left and right compensation filters are designed to filter transfer functions based on the simulated target function multiplied by an inverse of the left/right frequency responses. By relying on a simulated target instead of relying on an empirical approach, the general impact of a room can be more accurately captured by the target functions.

Abstract: A method and a system for determining an interference value. The method receives a sound signal and an interferer signal and forms a pair of a portion of the sound signal and the interferer signal. The portions have a predetermined time duration but the method is capable of determining the interference value swifter, so that the interference value may be output in real time.

Abstract: A method for identifying a user among a plurality of users of a multimedia system comprising extracting an i-vector for the speech utterance using total variability modeling, comparing the extracted i-vector with a collection of i-vector sets in order to identify a target set most similar to the extracted i-vector, and granting access to the multimedia system in accordance with an access profile associated with the identified target set. Further, source variation is minimized by, for each speech utterance acquired using a specific data source, re-centering first-order statistics of the speech utterance around the mean of an informative prior associated with the source, and using the co-variance of the informative prior associated with the source when extracting the i-vector for the speech utterance.

Abstract: A method for compensating for acoustic influence of a listening room on an acoustic output from an audio system including at least a left and a right loudspeaker, the method comprising determining a left frequency response and a right frequency response, designing left and right compensation filters, and during playback applying the left and right filters to left and right input signals. The method further includes determining mono and side responses and designing mono and side compensation filters, and, during playback, applying the mono compensation filter to a mono signal based on the left and right input signals, and applying the side compensation filter to a side signal based on the left and right input signals. The filters are thus combined to provide left and right output signals which have been left/right filtered and mono/side filtered.

Abstract: The present invention relates to a method to obtain a reflective anodized aluminium surface on an object. The present invention relates in particular to a method to obtain a reflective, anodized aluminium surface having a white appearance.

Abstract: A method for compensating for acoustic influence of a listening room on an acoustic output from an audio system including at least a left and a right loudspeaker, the method comprising determining a left frequency response and a right frequency response, designing left and right compensation filters, and during playback applying the left and right filters to left and right input signals. The method further includes determining mono and side responses and designing mono and side compensation filters, and, during playback, applying the mono compensation filter to a mono signal based on the left and right input signals, and applying the side compensation filter to a side signal based on the left and right input signals. The filters are thus combined to provide left and right output signals which have been left/right filtered and mono/side filtered.

Abstract: A method and a system for determining an interference value. The method receives a sound signal and an interferer signal and forms a pair of a portion of the sound signal and the interferer signal. The portions have a predetermined time duration but the method is capable of determining the interference value swifter, so that the interference value may be output in real time.

Abstract: A solid state relay and a method for controlling a signal path between an AC-signal output and a load in a power amplifier assembly are disclosed. The relay comprises a first and a second MOSFET having a common gate junction, a common source junction and wherein and wherein a drain terminal of a first MOSFET and a drain terminal of a second MOSFET form relay terminals. The solid state relay further comprises a control circuit comprising a positive side comprising a first controlled current generator configured to provide a first control current to the gate junction, and a negative side comprising a current mirror circuit configured to sink a second current from the source junction. Hereby, a generic solid state speaker relay has been disclosed. The relay performs up to the most stringent demands regarding pop/click on high quality products. It can be used to ground wire break, hot wire break and BTL (Bridge Tied Load) break.

Abstract: The invention relates to a loudspeaker system as well as a loudspeaker with controllable directivity as well as a method for controlling the individual sound transducer units in order to obtain a given target directivity. The loudspeaker comprises a plurality of sound transducer units distributed over two or more surfaces of a body. Each of the sound transducer units are utilized for frequency dependent a) level/gain adjustment and b) delay/phase adjustment of each individual sound transducer unit. The sound emitting transducer units are organized in two or more transducer arrays where the physical placement of transducer units included in the at least two or more transducer unit arrays are symmetrical organized and mirrored around a common axis.

Abstract: An amplifier arrangement comprising first and second power amplifiers (T1, T2) having drains connected to positive and negative drive voltages, respectively, and gates connected to an input signal. The arrangement further comprises first and second current sensors (1, 2) for detecting first and second drain currents from the power amplifiers, processing circuitry (3) adapted to identify the smallest drain current, and a feedback control loop (5) and means for driving a bias current dependent on a feedback signal through a resistor connected between the input signal and the gate of an inactive one of the first and second power amplifiers. The control loop will keep the idle current constant in the transistor with the lowest current (the inactive transistor). Thereby, the current running in the transistor which does not deliver current to the load will be fixed at a desired value.

Abstract: An apparatus for re-distributing acoustic energy. The apparatus comprises a first concave surface defined as a surface of revolution of a line or curve. This curve of revolution is rotated beyond 230 degrees and thus defines a rather small opening, which has advantages in the frequency response output. Additionally or alternatively, edges of the concave surface may be rounded to provide advantageous effects in the sound output.

Abstract: A system and a method for providing sound into two different sound zones, where an a first signal and a second signal are accessed and converted into speaker signals generating the sound in the zones. interference value is determined. If the interference value exceeds a predetermined threshold, one or more parameter changes are determined to parameters of the conversion which, when implemented, will ensure that the interference in the first zone by sound in the second zone is maintained below a threshold limit.