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Absolute Calibration of Pickups and Records

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By synchronizing the turntable with a curve tracer, and using constant-frequency bands it is possible to obtain a continuous and absolute calibration of the frequency-response of a pickup without including wavelength-dependent playback loss. An absolute calibration of a sweep-frequency tone band can also be obtained by this method, independent of the frequency response of the pickup, however, wavelength-dependent playback loss is included. The calibration of CBS Laboratories STR-130 RIAA test record produced in this manner is described.

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JAES Volume 14 Issue 3 pp. 218-220; July 1966
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Permalink: http://www.aes.org/e-lib/browse.cfm?elib=1146

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AES - Audio Engineering Society