Synthesis and Isolation of Expectorant Guaifenesin By: Ben DuBose Dr. Cossey 3361L Abstract The purpose of this experiment was to isolate and synthesize Guaifenesin. Isolation was performed with the use of two Guai-Aid Tablets‚ each of which contained 400mg of pure Guaifenesin. Reflux‚ a technique used to heat a mixture without evaporating the solution‚ was used to synthesize Guaifenesin through a Williamson Ether Synthesis reaction with an SN2 mechanism. Introduction
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ABSTRACT In this paper we address the issue of pronunciation model- ing for conversational speech synthesis. We experiment with two different HMM topologies (fully connected state model and forward connected state model) for sub-phonetic model- ing to capture the deletion and insertion of sub-phonetic states during speech production process. We show that the experi- mented HMM topologies have higher log likelihood than the traditional 5-state sequential model. We also study the first and
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Project/ scenario name: Custom scenario description: Voice based Web Browser Internet has brought about an incredible improvement in human access to knowledge and information. Voice browsers allow people to access the Web using speech synthesis‚ pre-recorded audio‚ and speech recognition. This can be supplemented by keypads and small displays. Voice may also be offered as an adjunct to conventional desktop browsers with high resolution graphical displays‚ providing an accessible alternative
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specific enantiomers of molecules. If the chirality of the molecules is incorrect‚ they may not be utilized or may even hurt the organism. For this reason a method to create chiral molecules is very important and for this reason we study asymmetric synthesis. One method in which a chiral epoxide can be synthesized is through the use of a Jacobsen-type catalyst. In order to synthesize Jacobsen’s catalyst‚ Jacobsen’s ligand must be created first which requires the use of 3‚5-di-tert-butyl-salicylaldehyde
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IS AN ORGANIC COMPOUND? An organic compound is any member of a large class of gaseous‚ liquid‚ or solid chemical compounds whose molecules contain carbon. Organic chemistry is the science concerned with all aspects of organic compounds. Organic synthesis is the methodology of their preparation. APPLICATIONS OF ORGANIC COMPOUNDS clothing of cotton‚ wool‚ silk‚ and synthetic fibres; common fuels‚ such as wood‚ coal‚ petroleum‚ and natural gas; components of protective coatings‚ including varnishes
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The study process: The study process is initialized by going through different web sites and blogs in order to know about the Text-To-Speech methodology. We have tried to understand the purpose of voice synthesis. Whatever we have discovered from the Internet is described below. Text to speech synthesizer: A Text-To-Speech (TTS) synthesizer is a computer-based system that should be able to read any text aloud‚ whether it was directly introduced in the computer by an operator or scanned and
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I44 IEEE TRANSACTIONS ON ACOUSTICS‚ SPEECH‚ AND SIGNAL PROCESSING‚ VOL. ASSP-34‚ NO. 4‚ AUGUST Speech Analysis/Synthesis Based on a Sinusoidal Representation Abstract-A sinusoidal model for the speech waveform used to de- speech compression. The amplitudes and frequencies of is velop a new analysislsynthesis technique that is characterized by the the underlying sine waves are estimated using Kalman filamplitudes‚frequencies‚ andphases of thecomponentsine waves. tering techniques‚ and each
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CHAPTER I 1.0 INTRODUCTION Speech synthesis is the artificial production of human speech. A computer system used for this purpose is called a speech synthesizer‚ and can be implemented in software or hardware. A text-to-speech (TTS) system converts normal language text into speech; other systems render symbolic linguistic representations like phonetic transcriptions into speech. The ultimate goal of text-to-speech synthesis is to convert ordinary orthographic text into an acoustic signal that
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Microcontroller and Sensors Based Gesture Vocalizer Abstract: - Gesture Vocalizer is a large scale multi-microcontroller based system being designed to facilitate the Communication among the dumb‚ deaf and blind communities and their communication with the normal people. This system can be dynamically reconfigured to work as a “smart device”. In this paper‚ microcontroller and sensors based gesture vocalizer is presented. Gesture vocalizer discussed is basically a data glove and a microcontroller
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Hahshshshshhshshshdhdjdjdhdhdbbddbdbdddbdndbbdbdbsbsjsjshdjh- ejdndbdhdjdjjdnnddbdbdndnndndnndndndnndnndndn Although at its most basic level a synthesis involves combining two or more summaries‚ synthesis writing is more difficult than it might at first appear because this combining must be done in a meaningful way and the final essay must generally be thesis-driven. In composition courses‚ “synthesis” commonly refers to writing about printed texts‚ drawing together particular themes or traits that you observe in those
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