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Korotkoff Sounds01:12

Korotkoff Sounds

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Korotkoff sounds are the specific sounds heard while measuring blood pressure using a sphygmomanometer, typically with a stethoscope or a Doppler device. They are named after Russian physician Nikolai Korotkov, who first described them in 1905. These sounds correspond to turbulent blood flow in the artery as the blood pressure cuff is gradually released after inflation.
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Heart Sounds01:15

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Heart sounds are generated by the turbulence in blood flow due to the closing of heart valves. These sounds are best perceived slightly away from the valves, where the blood flow disseminates the sound.
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Sound Waves01:01

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From Voxels to Knowledge: A Practical Guide to the Segmentation of Complex Electron Microscopy 3D-Data
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Deafening Data: Sound Measurement and Knowledge Making in the Cold War.

Georgi Georgiev

    Technology and Culture
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    Summary

    Technical monitoring of radio signal quality became crucial during the Cold War. Acoustic data from Radio Free Europe/Radio Liberty helped analyze closed societies and the "radio war," bridging engineering and intelligence.

    Area of Science:

    • Cold War Studies
    • Media History
    • Information Science

    Background:

    • Technical monitoring, assessing radio signal quality, gained significance during the Cold War due to propaganda and unreliable information.
    • Radio Free Europe/Radio Liberty (RFE/RL) faced deliberate interference from communist states, necessitating regular signal audibility measurements.
    • Quantifiable technical data became a valuable tool in an era of ideological conflict and restricted information flow.

    Purpose of the Study:

    • To examine how technical monitoring transformed sound into data during the Cold War.
    • To explore the intersection of engineering, intelligence, and political communication through acoustic data analysis.
    • To situate these practices within the broader history of Cold War media and the origins of datafication.

    Main Methods:

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    • Analysis of RFE/RL's technical monitoring recordings and signal audibility data.
    • Examination of how acoustic categories were used to study closed societies during political crises.
    • Review of statistical data provided by technicians to political officials regarding the
    • radio war
    • .

    Main Results:

    • Technical monitoring transcended mere signal quality assessment, becoming a method for political and social analysis.
    • Acoustic data provided insights into the effectiveness of jamming and the reach of Western broadcasts in closed societies.
    • Technicians' statistics offered a quantifiable measure of success in the
    • radio war
    • , influencing political communication.

    Conclusions:

    • Cold War technical monitoring practices demonstrate an early form of datafication, transforming intangible sound into measurable data.
    • These practices bridged geographical, ideological, and professional divides, highlighting the multifaceted role of technical data.
    • The study invites parallels between historical Cold War surveillance and contemporary data-driven monitoring regimes.