摘要:
The aim of the invention is to create a detection device that is able to determine whether a microphone or audio signal processing apparatus which is connected thereto operates in an analog or digital manner, an analog or digital terminal being selected according to said determination. Said aim is achieved by a detection device comprising a sensing unit (6), a determination unit (5), and a selection unit (4). The sensing unit (6) senses an external signal that is fed to the detection device and forwards said signal to the determination unit (5). The determination unit (5) determines whether the sensed external signal has been transmitted by an analog or digital audio signal processing apparatus and transmits a corresponding determination signal to the selection unit (4). The selection unit (4) subsequently selects an analog or digital terminal according to the determination signal.
摘要:
The invention relates to a capacitive sound transducer and a capacitor microphone having such a sound transducer. The sound transducer comprises a diaphragm (3) and a counterelectrode (1), which is arranged at a short distance from the diaphragm (3) and has a first perforation (2). In order to attenuate natural oscillations of the diaphragm (3) at high frequencies, a capacitive sound transducer is proposed in which a sound-permeable attenuation disc (7) is arranged at a short distance from the diaphragm (3) and opposite the counterelectrode (1), which attenuation disc has a second perforation (8). In addition, in this case the first perforation (2) and the second perforation are arranged such that they are offset with respect to one another.
摘要:
Die Erfindung betrifft ein Verfahren zur Übertragung von digitalisierten Audioinformationen in hoher Qualität und mit geringer Verzögerung, insbesondere Verfahren zur Übertragung von digitalisierten Audioinformationen in einer Audioaufnahme (Mikrofon) und/oder Wiedergabestrecke. Erfindungsgemäß wird ein Kanalfilter vorgeschlagen, der zur Formung des Hochfrequenzspektrums der Übertragung eingesetzt wird, wobei das Spektrum in einem ersten Bereich von etwa 100 bis 300 kHz Nutzbandbreite keine Dämpfung aufweist und in einem Bereich außerhalb von dem ersten Bereich eine Sperrdämpfung von insbesondere bevorzugt mehr als 60 dB bzw. mehr als 80 dB aufweist ( Figur 13 ).
摘要:
The invention relates to a method for high-resolution, wave-form maintaining digitization of analog signals. The usual scalar logarithmic quantization is transferred to multidimensional spherical coordinates whereby the resulting advantages such as a constant signal-to-noise ratio arise over an extremely high dynamic range with very little loss in relation to the distortion-theory rate. In order to use the statistic dependencies available in the source signal for another gain in the signal-to-noise ratio, the differential pulse code modulation (DPCM) is combined with spherically logarithmic quantization. The resulting method makes it possible to reduce data in an effective manner with a high long-term distance for an extremely small signal delay.
摘要:
The invention relates to headphones comprising a pre-stressed neck band. An ear cushion is respectively arranged on both ends of said neck band. Said ear cushion has a convex shape such that it can be introduced into the outer ear of the user.
摘要:
The invention relates to a compressor device for a compander system. The compressor device comprises a level adjusting/detecting/controlling means and a pre-emphasis means for carrying out an adaptive pre-emphasis filtering. The invention also relates to an expander device for a compander system with a level adjusting/detecting/controlling means and with a de-emphasis means for carrying out an adaptive de-emphasis filtering.
摘要:
The invention relates to a headphone with a behind-the-head headband, comprising at least one earpiece and a behind-the-head headband (10) to support the earpiece (30). The behind-the-head headband (10) further comprises a first and second rest position for resting on a temporal bone of a wearer of the headphones. The separation between the earpiece and the second rest position can be adjusted. As a result of the possibility of adjustment of the separation with relation to the rest position, the earpiece can be positioned exactly over the auditory channel of the headphone wearer without coming into a position pressing on the ear.
摘要:
The invention relates to a method for high-resolution, wave-form maintaining digitization of analog signals. The usual scalar logarithmic quantization is transferred to multidimensional spherical coordinates whereby the resulting advantages such as a constant signal-to-noise ratio arise over an extremely high dynamic range with very little loss in relation to the distortion-theory rate. In order to use the statistic dependencies available in the source signal for another gain in the signal-to-noise ratio, the differential pulse code modulation (DPCM) is combined with spherically logarithmic quantization. The resulting method makes it possible to reduce data in an effective manner with a high long-term distance for an extremely small signal delay.
摘要:
An information system for supplying a prescribed region with information comprises at least one transmission device for transmitting information in digitally coded form, and at least one hand-held appliance. Said hand-held appliance comprises a reception device for receiving the information transmitted by the transmission device, a digital memory device for storing the received information, a reproduction device for reproducing the stored information, an event recognition device for recognizing particular events which, upon recognizing an event, selects from the stored information the information associated with the recognized event for the purpose of reproduction, and a statistics managing unit for accumulating and for managing data with regard to recognised events and the handling of said hand-held appliance within the prescribed region.
摘要:
The invention relates to a wireless microphone system. One aim of the invention is to further develop such wireless microphone systems while another aim thereof is to improve the intermodulation distance between HF transmitters so as to allow a greater number of transmitters to be used in the same frequency band. Said aim is achieved by a wireless microphone system comprising antennas that are connected thereto, a circulator and/or an HF isolator being connected to the antennas or antenna.