摘要:
An element (20) for making an electric contact to another contact member (19) for enabling an electric current to flow between said element (20) and said contact member comprises a body having at least a contact surface thereof coated with a contact layer (21) to be applied against said contact member. This contact layer comprises a continuous film comprising a laminated multielement material having strong bonds, such as covalent or metallic bonds, within each atomic layer and weaker bonds, through larger bonding distance or for example as van der Waals bonds or hydrogen bonds, between at least some adjacent atomic layers thereof.
摘要:
A photoconductive switch comprises a first layer (1), two contact layers (2, 3) arranged on said first layer and connectable to different potentials for applying a voltage thereacross, said first layer being adapted to be conducting upon applying a voltage across said contact layers when exposed to light from an illumination source of an energy high enough for lifting charge carriers from the valence band to the conduction band of the material of said first layer. The illumination source is an excimer lamp, in which unstable electronically excited dimers are formed when a voltage is applied across first and second electrodes (12, 13) separated by a gas or gas mixture. The dimers so formed decompose into two gas atoms while emitting a photon of an energy suitable for lifting charge carriers from the valence band to the conduction band of the material of the first layer.
摘要:
The invention is directed to systems, methods and computer program products for adjusting audio properties after recording an audio. An exemplary method includes recording audio using an audio capturing system, wherein the recorded audio is associated with an audio level; determining one or more audio signal properties associated with the recorded audio; comparing the audio level with a first predetermined threshold level; and in response to determining the audio level is greater than a first predetermined threshold level, adjusting the recorded audio based at least partially on modifying the one or more determined audio signal properties, wherein the adjusting step is performed a finite time interval following the recording step.
摘要:
A sound reproducing device has a loudspeaker arranged to produce sound from an audio signal provided by an audio signal source. A microphone is positioned to pick up ambient noise and generate a microphone signal which comprises the noise. An ambient noise cancellation (ANC) system receives the microphone signal from the microphone and generates anti-noise corresponding to the ambient noise in the microphone signal. An automatic polarity adaptation (AAP) system monitors the ANC system and, when a decision criterion is fulfilled, causes a switch in polarity for the generated anti-noise.
摘要:
An object of the present invention is to improve the functionality of a noise reducer adapted to perform an active noise reduction process.The object is achieved by a noise reducer 300 comprising at least one microphone 310 connected to a noise controller 320, and at least one loudspeaker 330 connected to the noise controller 320. The microphone 310 is arranged at the loudspeaker 330, and the noise controller 320 is adapted to perform an active noise reduction process. An event detector 340 is connected to the noise controller 320 and adapted to send an event 10 detection signal to the noise controller 320, wherein the event detection signal comprises information regarding an external event. The noise controller 320 is further adapted to analyse the event detection signal and to adapted to control the active noise reduction process in dependence of an outcome of the analysis of the event detection signal.
摘要:
A method of synthesizing or growing a compound having the general formula Mn+1AXn(16) where M is a transition metal, n is 1, 2, 3 or higher, A is an A-group element and X is carbon, nitrogen or both, which comprises the step of exposing a substrate to gaseous components and/or components vaporized from at least one solid source (13, 14, 15) whereby said components react with each other to produce the Mn+1AXn (16) compound.
摘要翻译:一种合成或生长具有通式M N n + 1 AX(16)的化合物的方法,其中M是过渡金属,n是1,2,3或 更高,A是A族元素,X是碳,氮或两者,其包括将基底暴露于从至少一个固体源(13,14,15)蒸发的气态组分和/或组分的步骤,由此所述组分 彼此反应以产生M + n + 1个(16)化合物。
摘要:
A bearing assembly for an electrical motor, including a shaft, a housing, and a main bearing between the shaft and the housing, the shaft being surrounded by a rigid sleeve for functioning as an auxiliary bearing in case of a breakdown of the main bearing and as a grease sealing under normal operation.
摘要:
A motor or generator housing for electric traction including a cast housing body with cast or welded fastening areas circumferentially spaced on the envelope surface adapted to be mounting areas for attachment lugs, safety noses, air duct channels or terminal boxes. A bogie attachment device and a safety nose device adapted to be fixed to a motor housing is also contemplated. The devices have attachment areas formed to attach and be fixable to the attachment areas of the motor housing. A motor or generator including such housing is further contemplated.
摘要:
The present invention provides adapting an audio frequency range to a linear vibrator. This may be achieved by detecting presence of signal components in a first audio frequency range. A control signal may then be provided in response to the detected first signal components. A second signal component in a second frequency range may moreover be obtained and controlled in response to the amplitude of the control signal, wherein the second frequency range is narrower than the first audio frequency range. Feeding of the controlled second signal component to the linear vibrator causing vibrations of the linear vibrator is thus enabled, creating an increased experience of the music when applied to rhythm-based music within a portable communication device such as a mobile phone.
摘要:
A microphone circuit includes a first microphone, a second microphone, an adjustable delay unit, and a combiner. The first microphone generates a first microphone signal that includes a contribution associated with an output signal that is generated by a loudspeaker in response to an input signal. The second microphone generates a second microphone signal that includes a contribution associated with the output signal from the loudspeaker. The adjustable delay unit delays the second microphone signal relative to the first microphone signal by a delay value. The combiner combines the delayed second microphone signal and the first microphone signal to provide a combined microphone signal. The adjustable delay unit adjusts the delay value so as to reduce at least a portion of the contribution to the combined microphone signal that is associated with the output signal from the loudspeaker.