Synchronized Swept-Sine: Theory, Application, and Implementation - October 2015
Effect of Microphone Number and Positioning on the Average of Frequency Responses in Cinema Calibration - October 2015
The Measurement and Calibration of Sound Reproducing Systems - July 2015
Master-Tape Equalization Revisited
Optimum signal minus noise level of a commercial tape or disc record requires the signal- and noise-spectra of the studio master tape to be matched to those of the commercial record. The use of the NAB 380 mm/s (15 in/s) equalization (3150 Hz transition frequency) with modern tapes results in frequency- and noise-spectra which have much higher levels at higher frequencies than the final records. Other practical equalizations are studied, and a 12,500 Hz reproducing transition frequency is suggested for further evaluation.
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