17 articles for “Air Conditioner”

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Research ArticleOpen accessIn the abstractEffects of Environmental Noises on Fundamental Frequency Contours of Thai DialectsSuphattharachai Chomphan, Chutarat ChompunthProblem statement: Fundamental Frequency (F0) is an important speech feature defining the human speech prosody. It is the resultant of the vibration of human’s vocal chords in speech production. In Thai, there are four main dialects spoken by Thai people residing in four core region including central, north, northeast and south regions. Environmental noises are also playing an important role … …American Journal of Applied Sciences, Vol. 9, Issue 5 · 9 Mar 2012 · 7,036 accessesView PDF Cite

Research ArticleOpen accessIn the abstractSpeech Compression for Noise-Corrupted Thai DialectsSuphattharachai ChomphanProblem statement: Dialects of Thai are quite different in the speaking styles. Environmental noises play an important role in corrupting the communication speech quality. Two factors affect the coded speech in the present speech communication. It is necessary to investigate how the two factors influence on the speech compression. Approach: In this study, the Multi-Pulse based Code Excited Linear Predictive … …American Journal of Applied Sciences, Vol. 9, Issue 3 · 9 Jan 2012 · 7,241 accessesView PDF Cite

Research ArticleOpen accessIn the abstractSpeech Compression for Noise-Corrupted Thai Expressive SpeechSuphattharachai ChomphanProblem statement: In speech communication, speech coding aims at preserving the speech quality with lower coding bitrate. When considering the communication environment, various types of noises deteriorates the speech quality. The expressive speech with different speaking styles may cause different speech quality with the same coding method. Approach: This research proposed a study of speech compression for noise-corrupted Thai expressive … …Journal of Computer Science, Vol. 7, Issue 10 · 6 Aug 2011 · 6,231 accessesView PDF Cite

Research ArticleOpen accessIn the abstractStudy of the Effects Irrigation Water Sanity and pH on Production and Relative Absorption of some Elements Nutrient by the Tomato PlantHossein Afshari, Shahram Ashraf, Abdol Ghaffar Ebadi et al.Problem statement: This study was conducted to examine the effects of irrigation water pH and Salinity on the growth and absorption of P, Na, Ca, K by tomato. Approach:The study includes two Salinity and pH factors and is consisted from 12 treatment and three repetitions. Tomato seeding grown in foam trays were transplanted in the joune 2010 to bags filled … …American Journal of Applied Sciences, Vol. 8, Issue 8 · 18 Jul 2011 · 7,699 accessesView PDF Cite

Research ArticleOpen accessIn the abstractEffects of Noises on the Analysis of Fundamental Frequency Contours for Thai SpeechSuphattharachai ChomphanProblem statement: In speech communication, noises from surrounding environments affect the communication quality with various aspects. The received speech quality should be analyzed to see how the important noises reduce the speech quality so that we can eliminate them in an appropriate way. Approach: This study presents a study on the analysis of the noise effects on Thai speech. Four … …Journal of Computer Science, Vol. 7, Issue 4 · 4 Apr 2011 · 6,833 accessesView PDF Cite

Research ArticleOpen accessIn the abstractMathematical Model of the Optimum Heat Pipe Heat Exchanger for a Condenser of Vapor-Compression Refrigeration CycleP. Yeunyongkul, P. Sakulchangsatjatai, P. TerdtoonProblem statement: This study theoretically investigated applying heat pipe as a heat exchanger in the condenser of vapor compression refrigeration system for sustainable well-being. Split-type air conditioner for residential propose was considered. To reduce pressure drop and recover heat from the condensing process of the refrigeration cycle, this investigation tried to use Closed Loop Oscillating Heat Pipe (CLOHP) instead of … …Energy Research Journal, Vol. 1, Issue 2 · 31 Oct 2010 · 8,637 accessesView PDF Cite

Research ArticleOpen accessIn the abstractEffective Ventilation Parameters and Thermal Comfort Study of Air-conditioned OfficesRoonak Daghigh, Kamaruzzaman SopianThe study presents objective and subjective studies of thermal comfort levels and ventilation characteristics of two air-conditioned postgraduate study offices. The observations were performed at the offices of Department of Electrical and Electronic Engineering, in University Putra Malaysia. Thermal comfort variables were measured while the students answered a survey on their sensation of the indoor climate. Concurrently, tracer gas analysis, … …American Journal of Applied Sciences, Vol. 6, Issue 5 · 31 May 2009 · 7,590 accessesView PDF Cite