341 research outputs found
CheapNET: Improving Light-weight speech enhancement network by projected loss function
Noise suppression and echo cancellation are critical in speech enhancement
and essential for smart devices and real-time communication. Deployed in voice
processing front-ends and edge devices, these algorithms must ensure efficient
real-time inference with low computational demands. Traditional edge-based
noise suppression often uses MSE-based amplitude spectrum mask training, but
this approach has limitations. We introduce a novel projection loss function,
diverging from MSE, to enhance noise suppression. This method uses projection
techniques to isolate key audio components from noise, significantly improving
model performance. For echo cancellation, the function enables direct
predictions on LAEC pre-processed outputs, substantially enhancing performance.
Our noise suppression model achieves near state-of-the-art results with only
3.1M parameters and 0.4GFlops/s computational load. Moreover, our echo
cancellation model outperforms replicated industry-leading models, introducing
a new perspective in speech enhancement
Subsonic steady-states for bipolar hydrodynamic model for semiconductors
In this paper, we study the well-posedness, ill-posedness and uniqueness of
the stationary 3-D radial solution to the bipolar isothermal hydrodynamic model
for semiconductors. The density of electron is imposed with sonic boundary and
interiorly subsonic case and the density of hole is fully subsonic case
Multifocal micronodular pneumocyte hyperplasia with a novel mutation in TSC1: a case report
We report on a 34-year-old woman diagnosed with tuberous sclerosis complex. The patient was admitted for
respiratory manifestations, while multi-organ involvement made the diagnostic process challenging. Genetic
testing revealed a novel mutation TSC1 c.2094_2110del
(p.His699Ter), which expands the disease-causing variant
spectrum. Our results may facilitate the disease diagnostics and help to devise genetic counseling and targeted
gene therapy
Algebraic time-decay for the bipolar quantum hydrodynamic model
The initial value problem is considered in the present paper for bipolar
quantum hydrodynamic model for semiconductors (QHD) in . We prove
that the unique strong solution exists globally in time and tends to the
asymptotical state with an algebraic rate as . And, we show that
the global solution of linearized bipolar QHD system decays in time at an
algebraic decay rate from both above and below. This means in general, we can
not get exponential time-decay rate for bipolar QHD system, which is different
from the case of unipolar QHD model (where global solutions tend to the
equilibrium state at an exponential time-decay rate) and is mainly caused by
the nonlinear coupling and cancelation between two carriers. Moreover, it is
also shown that the nonlinear dispersion does not affect the long time
asymptotic behavior, which by product gives rise to the algebraic time-decay
rate of the solution of the bipolar hydrodynamical model in the semiclassical
limit.Comment: 23 page
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