At present, almost all the systems and products for speech recognition are working in quiet environment and their performances are degraded or even can′t work when they are operated in high noisy environment. In this...At present, almost all the systems and products for speech recognition are working in quiet environment and their performances are degraded or even can′t work when they are operated in high noisy environment. In this paper, after analyzing the features of speech and noise, a speech enhancement method for LPC autoregressive model for command words recognition used in noisy environment is proposed, and an experimental system is realized. In different background noisy environments, we conduct experiments about SNR, basic accuracy, noise resistant ability and system environment adaptability with different microphones. The experimental results show that the system has good recognition performance in high noisy environments. The system can resist many kinds of noises and meet the needs of application areas on the whole such as military, traffic, marketplace and factory etc.展开更多
Wittgenstein in Philosophical Investigations and On Certainty develops a revolutionary conception of knowledge, of philosophy of language, and of philosophy of science. Very close to language-games is a concept that i...Wittgenstein in Philosophical Investigations and On Certainty develops a revolutionary conception of knowledge, of philosophy of language, and of philosophy of science. Very close to language-games is a concept that is important but did not attract much attention, the one of paradigm. In this paper this concept is analyzed together with notions such as context, use, reference, language-games, reality, science, truth, method, propositions, among others by means of which a new view of epistemology emerges. As for Kuhn, paradigm is his most known notion and his biggest contribution to innovate the history of science. I contrast these two conceptions and conclude that they have different uses, and that some difficulties that emerge from Kuhn＇s concept of paradigm would be dissolved if we take into consideration Witt^enstein＇s aooroaches of language and the uses it has in our life forms.展开更多
Joshua Cohen has recently remodelled Rawls＇ account of public reason into an explicitly global enterprise designed to both engage and regulate human rights discourses. Cohen＇s model is interesting because of the man...Joshua Cohen has recently remodelled Rawls＇ account of public reason into an explicitly global enterprise designed to both engage and regulate human rights discourses. Cohen＇s model is interesting because of the manners in which Cohen attempts to answer the questions the model begs： how can individuals with fundamentally incommensurable world views actually engage in common acts of practical reason with each other about issues like human rights？ What common convictions or a common social imaginary must these individuals share？ I argue that articulating potential common grounds on which acts of global public reasoning can transpire involves engaging with rather than seeking to reason autonomously from （or transcend） the material, social, and cultural forces--most importantly the tradition of liberal secularism which Cohen＇s model takes its normative bearings from--that make such discourses what they are. Doing so enhances the ability of a liberal secular human rights proponent to elucidate meaningful sites of common ground with others. Such common ground emerges not simply through toleration but also through critically engaging the worldviews of other globally public reasoners.展开更多
In the paper, the author constructs a model of three circles coinciding shown in two diagrams which are analogous to Venn diagram of set theory of mathematics, to illustrate both the process of FLT and the interaction...In the paper, the author constructs a model of three circles coinciding shown in two diagrams which are analogous to Venn diagram of set theory of mathematics, to illustrate both the process of FLT and the interaction of various factors intermeshed mainly in eight domains. The way the factors operate on FLT can be more visibly symbolized by that the three circles come to coincide in the diagrams. In the light of the model, it seems quite reasonable for us to adopt an ＂eclectic＂ approach to FLT, due to the complexity of FLT and FLL, and to practice FLT at a tentative time ratio： 6 vs. 4; 5 vs. 5; and 4 vs. 6 for input vs. output in teaching students respectively at three different levels. With this awareness increasing, teachers can practice sensitive teaching to cater for individuals in a class more sufficiently through flexible and diversified teaching techniques, targeting different goals： form, meaning, accuracy, fluency, complexity and so on.展开更多
文摘At present, almost all the systems and products for speech recognition are working in quiet environment and their performances are degraded or even can′t work when they are operated in high noisy environment. In this paper, after analyzing the features of speech and noise, a speech enhancement method for LPC autoregressive model for command words recognition used in noisy environment is proposed, and an experimental system is realized. In different background noisy environments, we conduct experiments about SNR, basic accuracy, noise resistant ability and system environment adaptability with different microphones. The experimental results show that the system has good recognition performance in high noisy environments. The system can resist many kinds of noises and meet the needs of application areas on the whole such as military, traffic, marketplace and factory etc.
文摘Wittgenstein in Philosophical Investigations and On Certainty develops a revolutionary conception of knowledge, of philosophy of language, and of philosophy of science. Very close to language-games is a concept that is important but did not attract much attention, the one of paradigm. In this paper this concept is analyzed together with notions such as context, use, reference, language-games, reality, science, truth, method, propositions, among others by means of which a new view of epistemology emerges. As for Kuhn, paradigm is his most known notion and his biggest contribution to innovate the history of science. I contrast these two conceptions and conclude that they have different uses, and that some difficulties that emerge from Kuhn＇s concept of paradigm would be dissolved if we take into consideration Witt^enstein＇s aooroaches of language and the uses it has in our life forms.
文摘Joshua Cohen has recently remodelled Rawls＇ account of public reason into an explicitly global enterprise designed to both engage and regulate human rights discourses. Cohen＇s model is interesting because of the manners in which Cohen attempts to answer the questions the model begs： how can individuals with fundamentally incommensurable world views actually engage in common acts of practical reason with each other about issues like human rights？ What common convictions or a common social imaginary must these individuals share？ I argue that articulating potential common grounds on which acts of global public reasoning can transpire involves engaging with rather than seeking to reason autonomously from （or transcend） the material, social, and cultural forces--most importantly the tradition of liberal secularism which Cohen＇s model takes its normative bearings from--that make such discourses what they are. Doing so enhances the ability of a liberal secular human rights proponent to elucidate meaningful sites of common ground with others. Such common ground emerges not simply through toleration but also through critically engaging the worldviews of other globally public reasoners.
文摘In the paper, the author constructs a model of three circles coinciding shown in two diagrams which are analogous to Venn diagram of set theory of mathematics, to illustrate both the process of FLT and the interaction of various factors intermeshed mainly in eight domains. The way the factors operate on FLT can be more visibly symbolized by that the three circles come to coincide in the diagrams. In the light of the model, it seems quite reasonable for us to adopt an ＂eclectic＂ approach to FLT, due to the complexity of FLT and FLL, and to practice FLT at a tentative time ratio： 6 vs. 4; 5 vs. 5; and 4 vs. 6 for input vs. output in teaching students respectively at three different levels. With this awareness increasing, teachers can practice sensitive teaching to cater for individuals in a class more sufficiently through flexible and diversified teaching techniques, targeting different goals： form, meaning, accuracy, fluency, complexity and so on.
