scholarly journals Studi Korelasi Sinyal Motorik Otot Wajah dan Sinyal Suara Ucap pada Artikulasi Fonem Vokal

2021 ◽  
Vol 13 (2) ◽  
pp. 109-115
Author(s):  
Faza Lisan Sadida ◽  
Muhammad Rady Irawan ◽  
Miranti Indar Mandasari, ◽  
Suprijanto Suprijanto

Perubahan bentuk artikulator memiliki pengaruh pada suara ucap yang dihasilkan, sehingga setiap fonem memiliki karakteristik pola artikulasi yang berbeda. Penelitian ini meninjau hubungan otot artikulator wajah dengan sinyal suara ucap yang dihasilkan pada proses artikulasi fonem vokal. Digunakan 4 elektroda untuk merekam sinyal otot yang diletakkan pada otot depressor anguli oris dan zygomaticus major berdasarkan hasil analisa optical flow citra wajah saat mengucapkan fonem vokal. Dilakukan korelasi silang pada setiap pasang envelope sinyal EMG untuk mengetahui kecenderungan bentuk artikulator pada proses artikulasi. Diperoleh hasil bahwa setiap responden memiliki kecenderungan pola kontraksi pada otot artikulator yang unik, dan terdapat sinkronisasi untuk keempat titik artikulator yang ditandai dengan rendahnya nilai delay hasil korelasi silang untuk keempat pasang elektroda. Selain itu, dilakukan pula analisis total energi kontraksi yang dibutuhkan untuk menggerakkan, menahan serta mengembalikan posisi artikulator pada proses artikulasi. Berdasarkan analisa perbandingan energi, diperoleh hasil bahwa kontribusi otot depressor anguli oris lebih dominan dibandingkan otot zygomaticus major pada proses artikulasi fonem vokal.

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Shuntaro Okazaki ◽  
Haruna Yamanami ◽  
Fumika Nakagawa ◽  
Nozomi Takuwa ◽  
Keith James Kawabata Duncan

AbstractThe use of face masks has become ubiquitous. Although mask wearing is a convenient way to reduce the spread of disease, it is important to know how the mask affects our communication via facial expression. For example, when we are wearing the mask and meet a friend, are our facial expressions different compared to when we are not? We investigated the effect of face mask wearing on facial expression, including the area around the eyes. We measured surface electromyography from zygomaticus major, orbicularis oculi, and depressor anguli oris muscles, when people smiled and talked with or without a mask. Only the actions of the orbicularis oculi were facilitated by wearing the mask. We thus concluded that mask wearing may increase the recruitment of the eyes during smiling. In other words, we can express joy and happiness even when wearing a face mask.


2021 ◽  
Author(s):  
Shuntaro Okazaki ◽  
Haruna Yamanami ◽  
Fumika Nakagawa ◽  
Nozomi Takuwa ◽  
Keith James Duncan Kawabata

Abstract The use of face masks has become ubiquitous. Although mask wearing is a convenient way to reduce the spread of disease, it is important to know how the mask affects our communication via facial expression. For example, when we are wearing the mask and meet a friend, are our facial expressions different compared to when we are not? We investigated the effect of face mask wearing on facial expression, including the area around the eyes. We measured surface electromyography from zygomaticus major, orbicularis oculi, and depressor anguli oris, when people smiled and talked with or without the mask. We found that only orbicularis oculi were facilitated by wearing the mask. We thus concluded that mask wearing increases the use of eye smiling as a form of communication. In other words, we can express joy and happiness even when wearing the mask using eye smiling.


2005 ◽  
Vol 44 (S 01) ◽  
pp. S46-S50 ◽  
Author(s):  
M. Dawood ◽  
N. Lang ◽  
F. Büther ◽  
M. Schäfers ◽  
O. Schober ◽  
...  

Summary:Motion in PET/CT leads to artifacts in the reconstructed PET images due to the different acquisition times of positron emission tomography and computed tomography. The effect of motion on cardiac PET/CT images is evaluated in this study and a novel approach for motion correction based on optical flow methods is outlined. The Lukas-Kanade optical flow algorithm is used to calculate the motion vector field on both simulated phantom data as well as measured human PET data. The motion of the myocardium is corrected by non-linear registration techniques and results are compared to uncorrected images.


CICTP 2020 ◽  
2020 ◽  
Author(s):  
Tao Chen ◽  
Linkun Fan ◽  
Xuchuan Li ◽  
Congshuai Guo ◽  
Miaomiao Qiao
Keyword(s):  

2021 ◽  
Author(s):  
Tobin Gevelber ◽  
Bryan E. Schmidt ◽  
Muhammad A. Mustafa ◽  
David Shekhtman ◽  
Nick J. Parziale

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