In this paper, we propose a non-realtime speech bandwidth extension method using HMM-based speech recognition and HMM-based speech synthesis. In the proposed method, first, the phoneme-state sequence is estimated from the bandlimited speech signals using the speech recognition technique. Next, for estimating spectrum envelopes of lost high-frequency components, an HMM-based speech synthesis tec...

In this paper we continue the investigation started in [AMStu], dealing with bialgebras A with an H-bilinear coalgebra projection over an arbitrary subbialgebra H with antipode. These bialgebras can be described as deformed bosonizations R#ξH of a pre-bialgebra R by H with a cocycle ξ. Here we describe the behavior of ξ in the case when R is f.d. and thin i.e. it is connected with one dimension...

the main purpose of this study was to investigate the level of agricultural extension entrepreneurship in the process of sustainable agricultural development. the statistical population of the study was composed of agricultural extension experts (n=2882). the method of sampling was a systematic random sampling one. questionnaire was the means employed for data collection. questionnaire validati...

In this paper, a new approach that extends narrow-band excitation signals using synchronous overlap and add (SOLA) of spectra have been proposed. Although artificial bandwidth extension (ABE) of speech has been extensively studied, the role of excitation spectra has not been as widely studied as the spectral envelope extension. In this study ABE is investigated with the widely used source-filte...

the study was carried out to assess the implication of the use of selected information and communication technologies (icts) for extension service delivery in nigeria. the simple random technique was used to select fifty percent of the total extension agents which equivalent to forty-two respondents as sample size for the study. frequency counts, percentages, mean and standard deviation were us...

this study is aimed at evaluating and measuring the factors affecting the dezful wheat farmers` attitude toward the extension of wheat waste reduction. the method of research was correlative- descriptive. the population of this study is all farmers cultivated wheat in dezful from 2011 to 2012 (n=5291). the number of samples size was 360 based on krejcie and morgan table. panel of experts and al...

broadcast digitalization with its enormous benefits to the broadcasting industry will improve the quality of content of programs delivered by television stations. africa has a switchover date of june, 2017. for nigerians to have access to television broadcast once the switch over is completed, they must purchase high definition television sets or the set-up box. the awareness among urban dwelle...

Most modern Web browsers export a rich API allowing third-party extensions to access privileged browser objects that can also be misused by attacks directed against vulnerable ones. Web browser vendors have therefore recently developed new extension frameworks aimed at better isolating extensions while still allowing access to privileged browser state. For instance Google Chrome extension archi...

The purpose of this study was to investigate the role of extension services in enhancing effectiveness of out growers’ credit system in Kisumu County, Kenya. The study specifically sought to determine whether public and private extension services play a significant role in enhancing effectiveness of out-growers’ credit system among smallholder sugarcane farmers. A total of 110 small scale farme...

This research was based on primary data collected through well designed and pre-tested questionnaire, to determine awareness of farmers on extension methods used by ADP in Kano state of Nigeria. Multistage sampling technique was used, in which three local governments were randomly selected. Secondly, three wards one each from the selected local governments (Danbatta, Gaya and Madobi) were rando...