Reeves, AH (English spelling) ReevesAH

Japanese: Reeves,A.H.(英語表記)ReevesAH
Reeves, AH (English spelling) ReevesAH

…This type of conversion is called pulse code modulation (PCM). The idea of ​​PCM was proposed by Alec H. Reeves in 1937, and it was known that this would enable stable and reliable communication. However, it was considered impossible to realize in the vacuum tube era because the circuitry would be quite complicated. …

From [Pulse Code Modulation]

…It is abbreviated as PCM, taking the initial letters of the English term. The basic concept was invented by the Frenchman A.H. Reeves in 1937, but it was not until the early 1960s that it was put to practical use, after the age of vacuum tubes had passed and transistors began to become widespread. Initially, it was mainly used for telephone voice, but as technology has advanced, it is now being applied to areas such as television signals, digital audio, and PCM recording. …

*Some of the terminology that mentions "Reeves, AH" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…このような変換をパルス符号変調PCM(pulse code modulationの略)という。PCMの発想は1937年にリーブズAlec H.Reevesにより提案され,これにより安定で信頼性の高い通信が可能になることが知られていた。しかし回路が相当に複雑化するために真空管時代においては実現不可能とされていた。…

【パルス符号変調】より

…英語の頭文字をとってPCMと略称される。基本的な考え方は1937年フランスのレーブA.H.Reevesによって発明されたが,実用に供されるようになったのは真空管の時代を経てトランジスターが普及し始めた1960年代初頭のことである。当初は電話音声への適用が中心であったが,技術の進歩とともにテレビ信号やディジタルオーディオ,PCM録音などの分野にも適用されつつある。…

※「Reeves,A.H.」について言及している用語解説の一部を掲載しています。

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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