Meesawat, Kittipitch

Loading...
Thumbnail Image
Preferred name
Meesawat, Kittipitch
Main Affiliation
Email
kittipitch.me@kmitl.ac.th

Settings

Now showing 1 - 2 of 2
  • Loading...
    Thumbnail Image
    Some of the metrics are blocked by your 
    consent settings
    Item type:Publication,
    Development and Preliminary Evaluation of a Wireless Acoustic Sensor Network for Environmental Noise Monitoring
    (2025-01-01)
    Meesawat, Kittipitch
    ;
    Padee, Wanut
    ;
    Thida, Worakrit
    ;
    Lertsawat, Krittika
    ;
    Danworaphong, Sorasak
    This study presents the development and preliminary evaluation of a wireless acoustic sensor network (WASN) designed for environmental noise monitoring in Thailand. A WASN prototype was developed and deployed at a construction site in Bangkok. The system's performance was evaluated over 240 days, comparing its measurements to a certified Class 1 sound level meter. Preliminary results indicated that the WASN tended to report lower 1 minute A-weighted equivalent continuous sound level values than the Class 1 sound level meter with an average difference of 8 dB. The study also identified key challenges during field deployment, including downtime caused by power loss and Wi-Fi connectivity issues. Future work will focus on addressing these limitations to improve system reliability and measurement accuracy.
  • Loading...
    Thumbnail Image
    Some of the metrics are blocked by your 
    consent settings
    Item type:Publication,
    The Trapezoidal Khim: Sound Radiation of G Notes
    (2025-01-01)
    Techaaphonchai, Natcha
    ;
    Thida, Worakrit
    ;
    Meesawat, Kittipitch
    ;
    Ayuthaya, Phonlasit Thinnakorn Na
    ;
    Chitsakul, Pakaphol
    This research investigates the sound characteristics of the trapezoidal Khim, a traditional Thai hammered dulcimer, focusing on the G 196, G 392 Hz and G 784 Hz notes played with different hammers. Two types of wooden hammers were used, that is, covered with flannel and uncovered. Measurements were conducted in a room measuring 10 by 5 by 3 meters using two microphones, one for capturing the sound field directionality and the other for reference sound. The measurement microphone was placed 2 meters away from the instrument at various angles, while the reference microphone was positioned above the center of the instrument. Analysis of the recordings reveals the directivity profiles for each frequencies, showing that the Khim exhibits relatively high directivity at 90 and 270 degrees, corresponding to its open channels of the instrument. This suggests that the instrument's construction significantly influences its sound radiation. Hammer type was found to affect overall directivity, i.e., fabric-covered hammers resulted in lower directivity compared to uncovered hammers. Furthermore, the hitting point on the key significantly affects the Khim's directivity, indicating that playing technique plays a crucial role in shaping the instrument's sound projection. This study contributes to a deeper understanding of the unique sound production of the trapezoidal Khim and its role in traditional Thai music. It offers valuable information for musicians, instrument makers, and researchers interested in the acoustics of cultural instruments in realistic performance environments.