Abstract:
According to one embodiment of the present invention, a doorbell device comprises: a power input unit; an interface unit; a battery unit for supplying power to the interface unit; a switching circuit connected to a doorbell switch so as to change a path of a current supplied from the power input unit according to an on/off state of the doorbell switch; and a control unit for charging the battery unit by using a current outputted from the switching circuit, wherein the control unit performs control such that the battery unit supplies power to the interface unit if the current outputted from the switching circuit toward the control unit is cut off.
Abstract:
The invention concerns a sound generator system for a vehicle with internal combustion engine (15) and/or electric motor, wherein the sound generator system (1, 70) has an electroacoustical transducer (11) and a control unit (24, 74). The electroacoustical transducer (11) is configured to produce an acoustical signal in dependence on an electrical input signal and is connected to an acoustic line (7) configured for transmission of the sound to the surroundings of the vehicle and/or into an exhaust line (9) of the vehicle. The control unit (24, 74) is configured to create a primary audio signal with frequencies from a given frequency range, to selectively amplify selected segments ("V") of the primary audio signal so that the audio signal (41) amplified in the selected segments has at least one section in which all audio signal values correspond to a maximum amplitude value that is specified for the segment, and the audio signal (41) amplified in the selected segments is continuous at the transitions from the at least one section to its neighboring sections, and wherein the audio signal (41) generated by the control unit (24) forms the basis of the electrical input signal.
Abstract:
A system and method for synthesizing an engine sound may receive one or more vehicle operational data signals. One or more tone parameters associated with a Shepard tone generator may be modified responsive to the one or more vehicle operation data signals. A Shepard tone may be generated responsive to the modified one or more tone parameters. The Shepard tone may be reproduced using one or more audio transducers.
Abstract:
The techniques discussed herein may facilitate real-time computation and playback of a propagated signal(s) perceived at a listener location in a three-dimensional environment in response to reception of a desired anechoic signal at a source location in the three-dimensional environment. The propagated audio realistically accounts for dynamic signal sources, dynamic listeners, and effects caused by the geometry and composition of the three-dimensional environment. The techniques may parameterize impulse response(s) of the environment and convolve the anechoic signal with canonical filters at run-time in a manner that respects the parameters of the parameterized impulse response(s). The techniques also provide for real-time computation and playback of a propagated audio signal perceived at a listener location in a virtual three-dimensional environment responsive to generation of source audio signals generated at multiple source locations in the virtual three-dimensional environment.
Abstract:
Die Erfindung betrifft ein Verfahren zum Betreiben eines Elektromotors, bei dem für eine elektrische Größe des Elektromotors ein pulsweitenmoduliertes Grundsignal, das eine Pulsweitenmodulationsfrequenz aufweist, erzeugt wird, wobei für die elektrische Größe ein sinusförmiges Zusatzsignal mit einer Sinusfrequenz im akustisch hörbaren Frequenzbereich erzeugt wird, wobei das Grundsignal und das Zusatzsignal zu einem Akustiksignal (14) für die elektrische Größe addiert werden, wobei dem Elektromotor die elektrische Größe mit dem Akustiksignal (14) bereitgestellt wird.
Abstract:
A method includes providing a fundamental frequency corresponding to the RPM of an engine of a vehicle; determining a plurality of harmonics of the fundamental frequency; and determining a target shape of the plurality of harmonics. The target shape includes, for each of the harmonics of the plurality of the harmonics, a gain value as a function of the RPM of the engine. The method also includes determining an accelerator pedal position (APP) based gain that includes a gain value as a function of an accelerator pedal position; and determining a speed based gain that includes a gain value as a function of a difference between a set maximum speed and a measured vehicle speed. The method further includes combining the plurality of harmonics, the target shape of the plurality of harmonics, the APP based gain, and the speed based gain to produce a set of engine harmonic enhancement signals.
Abstract:
The present invention relates to an environmentally-friendly vehicle sound generator apparatus and a control method thereof, and the apparatus comprises: a vehicle state sensing unit for sensing an operation state of a vehicle; a sound source storage unit for storing a plurality of operating sounds that can be output according to the operation state of the vehicle in the form of a sound source data; a sound source playback unit for selecting at least one of the operating sounds stored in the sound source storage unit, and playing back the selected sound source output from the sound source storage unit; a sound source amplification unit for amplifying the operating sound played back by the sound source playback unit; a sound output unit for outputting the operating sound amplified by the sound source amplification unit; and a control unit for receiving a sensing signal from the vehicle state sensing unit and controlling the operation of the sound source playback unit so as to play back the operating sound in different playback methods in such a manner as to control and change the operating sound according to the received sensing signal. The vehicle state sensing unit senses a vehicle speed, and if it is determined according to a vehicle speed signal of the vehicle state sensing unit that the vehicle speed reaches a preset speed range, the control unit fades out the output of the sound output unit at a preset ratio of the vehicle speed to a time elapsed after the vehicle speed reaches the preset speed range.
Abstract:
In a vehicle equipped with a vehicle sound system, determining a virtual fixed gear ratio; determining a virtual RPM based on the virtual fixed gear ratio; generating a set of harmonic signals based on the virtual RPM, the harmonic signals being sine-wave signals proportional to harmonics of the virtual RPM; processing the harmonic signals to produce a set of processed harmonic signals; and in the vehicle sound system, transducing the processed harmonic signals to acoustic energy thereby to produce an engine sound within a passenger cabin of the vehicle.
Abstract:
Ein System (70) zur aktiven Beeinflussung von in Abgasanlagen (40) geführtem Schall weist eine Steuerung (90), wenigstens einen Schallerzeuger (30), der dazu ausgebildet ist, mit einer Abgasanlage (40) in Fluidverbindung gebracht zu werden und wenigstens einen Aktor (20) auf. Der Aktor (20) ist in dem wenigstens einen Schallerzeuger (30) angeordnet und zum Empfang von Steuersignalen mit der Steuerung (90) verbunden. Weiter ist der wenigstens eine Aktor (20) zum Erzeugen eines Schalls in dem Schallerzeuger in Abhängigkeit eines von der Steuerung (90) empfangenen Steuersignals ausgebildet. Die Steuerung (90) ist ausgebildet, ein Steuersignal zu erzeugen und an den wenigstens einen Aktor (20) auszugeben, welches Steuersignal geeignet ist, Schall im Inneren einer Abgasanlage (40) zumindest teilweise oder vollständig auszulöschen, wenn der wenigstens eine Aktor (20) mit dem Steuersignal betrieben wird. Das System umfasst weiter ein Fehlermikrofon (50) und/oder einen Temperatursensor (51) und/oder eine Impedanzmessbrücke (52) und/oder ein Bussystem (53) und/oder einen Wassermesser (54). Die Steuerung (90) ist weiter ausgebildet, anhand der von dem Fehlermikrofon (50) und/oder dem Temperatursensor (51) und/oder der Impedanzmessbrücke (52) und/oder dem Bussystem (53) und/oder dem Wassermesser (54) ausgegebenen Signalen zu bestimmen, ob in der Abgasanlage ein erhöhter Abgasdruck vorliegt. Die Steuerung ist dann ausgebildet, eine Erzeugung des Steuersignals zu unterbrechen und/oder eine Ausgabe des Steuersignals an den wenigstens einen Aktor (20) zu unterbrechen und/oder einen Pegel des an den wenigstens einen Aktor (20) ausgegebenen Steuersignals um wenigstens 30 % oder wenigstens 60 % zu reduzieren, wenn das Vorliegen eines zu hohen Abgasdrucks erkannt wird.