發送短信 : An alternating variable technique for the constrained minimax design of frequency-response-masking filters

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