發送短信 : A formant analysis of common vowels in Singapore English

 _    _    _    _      _____     ___    __    __  
| || | || | || | ||   / ___//   / _ \\  \ \\ / // 
| || | || | || | ||   \___ \\  / //\ \\  \ \/ //  
| \\_/ || | \\_/ ||   /    // |  ___  ||  \  //   
 \____//   \____//   /____//  |_||  |_||   \//    
  `---`     `---`   `-----`   `-`   `-`     `