It is an abbreviation of time assignment speech interpolation, and is called 'TASI'. It mainly refers to a method or device for effectively increasing the number of telephone lines in undersea cables. In a normal telephone call, the speaker speaks for about 40% of the time, and the rest is idle time when no information is being transmitted. In long-distance telephone lines such as undersea cables, where transmission and reception are made up of separate lines, each line has an average of about 60% idle time, and by assigning and inserting the voice of other lines into this portion, the number of telephone lines can be roughly doubled. Source: Heibonsha World Encyclopedia, 2nd Edition Information |
time assignment speech interpolation(時間割当音声挿入)の略で,タシと呼んでいる。主として海底ケーブルの電話回線数を実効的に増加させるための方式,または装置をいう。通常の電話では,話者が発声する時間は通話時間の約40%であり,残りは情報を送らない空き時間となる。送信と受信が別々の回線により構成されている海底ケーブルなどの長距離電話回線では,このため,各回線は平均約60%の空き時間があり,この部分に他の回線の音声を割り当て挿入することにより,電話回線数を約2倍に増すことができる。
出典 株式会社平凡社世界大百科事典 第2版について 情報 |
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