The limited audio bandwidth of narrowband telephone speech degrades the speech quality. This paper proposes a method that extends the bandwidth of telephone speech to the frequency range 0–300 Hz. The lowest harmonics of voiced speech are generated using sinusoidal synthesis. The energy in the extension band is estimated from spectral features using a Gaussian mixture model. The amplitudes and ...

A reduced micromorphic model is formulated in the scope of crystal plasticity and crystalline cleavage damage. The finite strain formulation utilizes a single additional microvariable that used to regularize localized inelastic deformation mechanisms. Damage as strain-like variable fit generalized microslip and/or microdamage based formulation. Strategies treating slip damage simultaneously sep...

there is undoubtedly general agreement that the efficiency of educational investments should he maximized through the managerial process as far as possible. agricultural extension is one of the crucial tasks in developing agricultural societies calling for considerable consumption of intellectual investment. the management of agricultural extension projects (aeps) however, needs careful pla...

A novel speech bandwidth extension method based on audio watermark is presented in this paper. The time-domain and frequency-domain envelope parameters are extracted from the high-frequency components of speech signal, and then these parameters are embedded in the corresponding narrowband speech bit stream by the modified least significant bit watermark method which uses perception property. At...

The irradiation effects (sputtering and damage) induced by keV ion in LangmuirBlodgett f i lms of different thickness a r e studied for different incidence angles and fo r doses up t o 3 x 1013 ions.cm-2. The fi lms composed of different superposed monolayers allow to study, in SIMS, t h e evolution of t h e molecular ion intensity as a function of film depth. The volume excited by the primary ...

Avulsion fractures of the posterior cruciate ligament (PCL) are uncommon. On the basis of the site of damage of the PCL, hyperflexion, pretibial trauma, and hyperextension are proposed as mechanisms of PCL injuries. On the other hand, avulsion fractures of the tibial condyle are also rare. We report a PCL-mediated avulsion fracture of the lateral tibial condyle along with the tibial insertion o...

spinal cord injury (sci) is a trauma that disturbs motor, sensitive and autonomic function and directly impacts the quality of life. after physical damage, releasing of pro-inflammatory proteins and cytokines occurs and with collaboration of immune system cells, an immune response begins in the brain tissue. the result of neuroinflammation is edema, apoptosis and release of axonal growth inhibi...

Recently, concerns have been raised about the potential effect of head-neck junction damage products at the local and systemic levels. Factors that may affect this damage process have not been fully established yet. This study investigated the possible correlations among head-neck junction damage level, implant design, material combination, and patient characteristics. Head-neck junctions of 14...

the purpose of this study was to survey impacts of drought on socio-economic conditions of guilan paddy farmers. besides recognizing these impacts, it ranked them according to the viewpoint of the paddy farmers. it was of the descriptive- correlation type. questionnaire was the main tool of this study. to determine the validity of questionnaire used of comments of panel experts and reliability ...

Household food security remains a challenge in South Africa. The national government instituted the Integrated Food Security Strategy (IFSS) programme which identifies household agricultural production as an important element of improving household-level food security. Agricultural extension is well positioned to help achieve this aim, but its current contribution is unknown. This study identif...