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Author: search.filters.author.Tuwanuti, Panwit

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    Breathing sound detection from the external auditory canal with condenser microphones
    (2021-05-19)
    Chunhakam, Puripak
    ;
    Tuwanuti, Panwit
    ;
    Sangpisit, Wipa
    ;
    Wardkien, Paramote
    Breathing disorders or sleep apnea is one of the major causes of death that can be diagnosed through breathing while the patient is asleep. At present, breathing detectors are inconvenient for wearing and annoying in the activity of daily life. Therefore, in this research, we present a method for detecting the respiratory sound of breathing from the external auditory canal. This sound is produced by the flowing of air through the respiratory tract and the sound travel through the eardrum to the organs to the external auditory canal by using a condenser microphone to detect the sound of inhalation and exhalation, the detector is shaped like an earphone which does not disturb sleep and does not cause a nuisance to the wearer. Because we are already used to wearing headphones for listening to music while sleeping. This proposed breathing detection system prototype consists of a condenser microphone, amplifier, and signal processing was performed by using the MATLAB program to detect the peak of the breath signal and interpret the peak of the signal as breathing. The results showed that the system can accurately monitor the breathing with an error of about 9.81%
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    Optimization of multithread for long digit multiplier: By using ancient India Vedic mathematic
    (2017-11-03)
    Thongbai, Nopphagaw
    ;
    Tuwanuti, Panwit
    Any processor's performance is dependent on three important factor speed, area and power. The better tread-off between factors, an effective once. Multiplier are common used in computation process. In this paper, the proposed multiplier by design based on the sutra 'Urdhva Tiryakbhyam and Nikhilam' of Vedic are analyzed and the performance results of multiplier are compare with conventional multipliers and karatsuba once of the most popular. In conclusion of experiment Vedic mathematics can be improvement computation effective. Specifically, in accurate computation, in many digit mathematics or very long digit, that want power of computation. By helping of special opcode instruction that bundle in processor such as SSE, AVX and etc. in modern processor to increment parallel process level in single core by SIMD and vector register.
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    Implementation of vedic multiplier technique on multicore processor
    (2015-01-26)
    Tuwanuti, Panwit
    ;
    Thongbai, Nopphagaw
    This article describes about the mathematic parallel process idea by using Vedic Multiplier techniques. Vedic mathematics is an ancient India that one type of quick trick for calculating that most popular and worldwide acceptation in tutor school. Vedic can apply to use in information technology, science field. They have many researches that used apply Vedic mathematics to accelerate effective of computation. In this paper using Urdhva Tiyakbhyam Sutra and Nikhilam Sutra with both to implement on Multi core processing with MPICH2 (MPI protocol). Urdhva Tiyakbhyam Sutra uses to splitting long digits to sub block for distributing to some other core. Nikhilam Sutra is used for reduce value to improve some of computation effectively.