{
  "snapshotType": "editorial-transcript",
  "documentID": "CIA-RDP78-03153A002000120009-0",
  "documentDate": "1951-10-12",
  "officialURL": "https://www.cia.gov/readingroom/docs/CIA-RDP78-03153A002000120009-0.pdf",
  "capturedAt": "2026-07-28T18:58:34+09:00",
  "captureMethod": "official-search-index",
  "officialLinkState": "official-link-redirect-loop",
  "notice": "편집실 전사본 · 원문 링크 장애 시 보존 사본 · CIA 공식 원문 자체가 아님",
  "scope": "Officially indexed memo header fields and paragraphs 1-7 only",
  "headerLocators": [
    {
      "locator": "memo-header-date",
      "field": "date",
      "text": "12 October 1951",
      "normalizedValue": "1951-10-12"
    },
    {
      "locator": "memo-header-subject",
      "field": "subject",
      "text": "Sound Modulation"
    },
    {
      "locator": "memo-header-addressee",
      "field": "addressee",
      "text": "Director Central Intelligence"
    }
  ],
  "paragraphs": [
    {
      "locator": "memo-paragraph-1",
      "text": "Attached is a description and some simplified sketches of some new theories on sound fabrication and modulation that I have developed as a hobby."
    },
    {
      "locator": "memo-paragraph-2",
      "text": "As will be noted in the attached document a great deal of work has been expended by Bell Telephone Laboratories and others along these general lines, however, they have never accomplished exactly what I have in mind."
    },
    {
      "locator": "memo-paragraph-3",
      "text": "If the theories that I have outlined in paragraph 7 of fabricating sound by drawing the proper serrations on film strip material to produce any sound or speech desired is practical, it could be useful to CIA. For example — after samples of any particular individual's speech is analyzed a sound film strip could be fabricated and made to say anything desired and it would have the pronunciation characteristics of the individual's voice. Listeners who knew the individual's voice would believe it was he who was doing the talking."
    },
    {
      "locator": "memo-paragraph-4",
      "text": "Prior studies have shown that every person's voice will produce a different light configuration pattern on sound film strips for the pronunciation of the same word or syllable. I believe these variations can be produced manually and that sound strips can be fabricated to say anything, sounding a sound like the voice of any person desired when sufficient samples of his speech have been analyzed."
    },
    {
      "locator": "memo-paragraph-5",
      "text": "If this theory is practical its value in both peace and war is obvious."
    },
    {
      "locator": "memo-paragraph-6",
      "text": "I would like to know if CJA is interested. If not interested a negative report is requested."
    },
    {
      "locator": "memo-paragraph-7",
      "text": "It is requested that attachment not be discussed outside CIA."
    }
  ]
}