Anuwongpinit, Thanavit

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Anuwongpinit, Thanavit
Alternative Name
Anuwongpinit, T.
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Email
thanavit.an@kmitl.ac.th

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    Item type:Publication,
    Sine-Squared pulse approximation using generalized bessel polynomials
    (2019-05-29)
    Anuwongpinit, Thanavit
    ;
    Chutchavong, Vanvisa
    ;
    Janchitrapongvej, Kanok
    ;
    Benjangkaprasert, Chawalit
    This paper presents the approximation of sine-squared pulse based on the generalized Bessel polynomials. For designing a circuit to synthesize a sine-squared pulse test signal. The generalized Bessel polynomials have more parameter than classical Bessel polynomials that have alpha and beta parameters for adjusting the dominator of the transfer function to approximate the sine-squared pulse that closes to the ideal pulse. The simulation results show that the generalized Bessel polynomial can adjust the approximation response close to the ideal response. The orders of the transfer function are decreased that confirm a better performance than the previous works.
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    Item type:Publication,
    Voice over IP Integration Platform Performance Using EC2 AWS Cloud Service
    (2022-01-01)
    Sathaporn, Posathip
    ;
    Krungseanmuang, Woranidtha
    ;
    Chaowalittawin, Vasutorn
    ;
    Anuwongpinit, Thanavit
    ;
    Purahong, Boonchana
    This article describes a method for integrating a mobile application for controlling and transmitting voice data levels in various departments within an organization with Amazon Elastic Compute Cloud (AWS EC2) to reduce hardware location costs and create more convenient in-house management at a single point. To begin, the paper introduces the project objective with a business scenario from an organization. Second, the SIP server implementation method is provided by Asterisk on AWS EC2 Ubuntu operating system and connection with a Mobile application that is used by flutter framework. Finally, the project experiments and discussions will be presented, and the obtained results show that the call setup time for the iOS/Android platforms to PC performed the best, taking less than one second, and was the fastest when compared to other testing metrics. However, there are many more metrics that should be considered, which are presented in the research's results section. With high performance and stability, this article was able to broadcast voice data via mobile applications.