The Table 2 shows the mean percent correct scores of the five subjects using the 3 noise reduction
methods as well as the noisy speech condition for the various number of intensity steps.
If you hear a voice in all settings, deselect the Output Noise Only toggle, and drag the Noise Reduction
slider to find the best balance between noise reduction
By using the noise reduction
algorithm, the peak noise component is removed by the primary LPF, and the optimum pulse width ratio is deduced by the secondary LPF through slope control using selective switching of 4 LPF bypass switches by applying noise reduction
So it is necessary to carry on the noise reduction
before the concentration inversion.
It can be viewed from the figure that, under an empty-cavity state, resonance points of different orders are stimulated to different extents; due to sound and vibration coupling effect, frequencies of different orders in the acoustic cavities are enhanced to different degrees; within the frequency range of 100-150 Hz, acoustic response of internal cylindrical cavity is determined by structural stiffness; additionally, within the range, response of internal acoustic cavity changes with the variation of noise reduction
; the noise reduction
is higher and internal acoustic response is higher with a higher laying rate; therefore, internal response of the empty cavity is lowest, while that of the acoustic cavity with full laying ranks at the top .
In the first step of speech enhancement, the various noise reduction
methods were implemented to produce the enhanced speech stimuli by using the three noise reduction
methods namely spectral subtraction, wiener filtering and subspace method.
Test 1: Effects of the Two Stage HTHR Combustion on Combustion Noise Reduction
In the conventional multi-microphone-based noise reduction
technology on special purpose devices, noise is reduced by using the time difference among the microphones.
The ten contributions that make up the main body of the text cover innovative barriers, the design of vegetation and tree belts along roads, noise reduction
using surface roughness, and a variety of other related subjects.
Tests showed 30% noise reduction
, contributing to improved working conditions aboard the vessel.
High-end audio company Bose is suing Beats Electronics over patented noise reduction
technologies, it was reported over the weekend.