Doc 0000184359

UNCLASSIFIED RESTRICfED CONFIDENTIAL ... ··- NDER WILL CIRCLE r'ASSIFICATION TOP AND _.TO!~} .o· (\) CENTRAL INTELLIGENCE AGENCY 2 3 c===] 0APPROVAL IHFORMATIOH OstGHATURE D C]ACTIOH DIRECT REPLY DRETURH D I !coMMENT PREPARATION OF REPLY DDISPATCH D r===]cOHCURREHCE RECOMMEHDATIOH 0FILE a letter received from Would you please cation as to whether or not there appears to be an Agency application, either domestically or overseas. ---- ------ ... ·--. SECRET COHFIDEHTIAL RESTRICTED f'OR o.4 NO. • 30 4 SEP 1947 We have some electronic equipment which we believe may be of interest to you. It is made up of four separate units. The first unit is a tape recorder of extremely high fidelity capable of reproducing in intimate detail all the inflections, nuances, and tones encountered in human speech. The recording can then be played back through the second unit, a specially designed oscilloscopic device which flashes on a screen in the most exact detail a moving picture of these inflections and tonal qualities. The third unit may be employed to halve the speed of the recording ; and, in turn, to double the resultant sound frequency thus providing a geometrically perfect picture of a spoken word with this picture moving at a rate slow enough to permit careful visual examination. A fourth unit permits the transfer of these oscilloscopic curves to a permanent paper record for static visual analysis and comparison. This equipment group can be used in making almost micrometric analyses of the speech characteristics peculiar to a particular locale. Direct com parisons can be made of the speech habits of individuals known to come from a particular place vi th those of another person allegedly from the same place but who may be suspect. This same equipment may be used for polishing away speech habits which might result in the detection of an operative. We would appreciate an opportunity to discuss this matter w1 th you in greater detail at your convenience. ; r .. , The image displays the title "THE BLACK VAULT" rendered in a stylized font, accompanied by a graphic of a circular vault door with intricate mechanical details. Below the title, white text provides information about the document's origin, specifically stating it was obtained from "The Black Vault," an online database of declassified government documents. It further clarifies that this record is part of the MKULTRA/Mind Control Collection, comprising over 20,000 declassified pages from the CIA. A yellow URL, "http://mkultra.theblackvault.com," is also presented, indicating where the entire collection can be accessed. This visual presentation, with its prominent vault imagery and textual explanation, aims to conveyed the nature and source of the document as a declassified record from a historical CIA program. This page is an official routing slip from the Central Intelligence Agency. It is partially filled out, with "A/B, 1, 44/7" handwritten in the top right and "5/10/61" in the date field. There is a handwritten initial "m.a." under the signature line. The "REMARKS" section is partially obscured by a handwritten note "B" and some illegible text. The bottom of the form indicates it is a "FORM NO. 30.4 SEP 1947". The classification markings indicate it is part of the "UNCLASSIFIED" section of the form but the original document it references may have been classified. The page is a scanned document with text content. There are no photographs, handwritten annotations, signatures, stamps, forms, diagrams, schematics, organizational charts, tables, structured data, or specific visual evidence of experimental procedures. The content is solely text, describing electronic equipment related to speech analysis. The document does not appear to have any redactions.