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Noise reduction characteristics of asphalt pavement based on indoor simulation tests
Construction and Building Materials, 2019Low noise asphalt pavement mitigates the impact of traffic noise on the ecological environment and surrounding population to a certain extent. To explore the noise reduction characteristics of different asphalt pavements, an indoor simulation device for ...
Haitao Zhang +2 more
semanticscholar +1 more source
Optics Letters, 2018
In this Letter, we propose a fast speckle noise reduction method with only a single reconstructed image based on convolutional neural networks. The proposed network has multi-sized kernels that can capture the speckle noise component effectively from ...
Wonseok Jeon +3 more
semanticscholar +1 more source
In this Letter, we propose a fast speckle noise reduction method with only a single reconstructed image based on convolutional neural networks. The proposed network has multi-sized kernels that can capture the speckle noise component effectively from ...
Wonseok Jeon +3 more
semanticscholar +1 more source
Applied Acoustics, 2018
Discrete-frequency tones at integral multiple of the pumping frequency are often the main contributor to the noise of axial piston pumps. It is an effective method to reduce the noise by suppressing the discrete-frequency tones.
Jun-hui Zhang +7 more
semanticscholar +1 more source
Discrete-frequency tones at integral multiple of the pumping frequency are often the main contributor to the noise of axial piston pumps. It is an effective method to reduce the noise by suppressing the discrete-frequency tones.
Jun-hui Zhang +7 more
semanticscholar +1 more source
The Journal of the Acoustical Society of America, 1996
A noise-suppression circuit (10) divides the signal from a microphone (12) into a plurality of frequency sub-bands by means of a noise-band divider (18) and a subtraction circuit (36). By means of gain circuits (32) and (34), it applies separate gains to the separate bands and then recombines them in a signal combiner (38) to generate an output signal ...
Jin Yang, Andrew Sendyk
openaire +1 more source
A noise-suppression circuit (10) divides the signal from a microphone (12) into a plurality of frequency sub-bands by means of a noise-band divider (18) and a subtraction circuit (36). By means of gain circuits (32) and (34), it applies separate gains to the separate bands and then recombines them in a signal combiner (38) to generate an output signal ...
Jin Yang, Andrew Sendyk
openaire +1 more source
2014
Magnetoencephalography (MEG) is a non-invasive neuroimaging tool that offers a combination of excellent temporal and good spatial resolution, provided that the acquired signals have a high enough signal-to-noise ratio. This requirement is often compromised as MEG signals are very weak and often masked by interfering signals from environmental noise ...
Samu Taulu +3 more
openaire +1 more source
Magnetoencephalography (MEG) is a non-invasive neuroimaging tool that offers a combination of excellent temporal and good spatial resolution, provided that the acquired signals have a high enough signal-to-noise ratio. This requirement is often compromised as MEG signals are very weak and often masked by interfering signals from environmental noise ...
Samu Taulu +3 more
openaire +1 more source
Transportation Noise—Airplane Noise Reduction
The Journal of the Acoustical Society of America, 1973Current Federal noise regulations will be discussed along with their impact on community noise exposure. Brief references will be made to specific technical areas where significant advances in noise reduction have been made and to noise reduction goals for the future.
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The Journal of the Acoustical Society of America, 2006
A noise reduction apparatus that reduces noise of intermediate to high range in a compartment of a vehicle. The apparatus comprises a source unit (1) that generates a reproduction signal, an ANC unit (2) that performs a signal processing to actively cancel the noise, a sensor (6) that detects information inside and outside the vehicle, an inside voice ...
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A noise reduction apparatus that reduces noise of intermediate to high range in a compartment of a vehicle. The apparatus comprises a source unit (1) that generates a reproduction signal, an ANC unit (2) that performs a signal processing to actively cancel the noise, a sensor (6) that detects information inside and outside the vehicle, an inside voice ...
openaire +1 more source
2000
In this chapter we will cover the area of theory and relevant experiments in the generation of squeezed states. Prior to discussing the parametric oscillator, we offer a brief introduction to non-linear optics and input-output theory. Finally, we will discuss other important experiments that generate squeezed states.
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In this chapter we will cover the area of theory and relevant experiments in the generation of squeezed states. Prior to discussing the parametric oscillator, we offer a brief introduction to non-linear optics and input-output theory. Finally, we will discuss other important experiments that generate squeezed states.
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The Journal of the Acoustical Society of America, 1989
Electronic circuitry as described which enhances the intelligibility of a speech signal corrupted by low-frequency noise while tending to retain frequency components of the signal characteristic of natural-sounding speech. The circuitry includes a broad band channel which passes the speech signal with little spectral distortion.
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Electronic circuitry as described which enhances the intelligibility of a speech signal corrupted by low-frequency noise while tending to retain frequency components of the signal characteristic of natural-sounding speech. The circuitry includes a broad band channel which passes the speech signal with little spectral distortion.
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AIP Conference Proceedings, 1996
Noise reduction is a problem being encountered in a variety of applications, such as environmental noise cancellation, signal recovery and separation. Passive noise reduction is done with the help of absorbers. Active noise reduction includes the transmission of phase inverted signals for the cancellation.
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Noise reduction is a problem being encountered in a variety of applications, such as environmental noise cancellation, signal recovery and separation. Passive noise reduction is done with the help of absorbers. Active noise reduction includes the transmission of phase inverted signals for the cancellation.
openaire +1 more source