Two-tone test signal method for BTSC calibration

Details Two-tone test signal method for BTSC calibration Two-tone test signal method for BTSC calibration

1987-10-08

1989-03-07

Isen, Forester W.

Electrical audio signal processing systems and devices

Binaural and stereophonic

Broadcast or multiplex stereo

324475, H04H 500

Patent

active

048113956

ABSTRACT:
A two-tone test signal method for calibrating a BTSC monitoring system compensates for errors introduced into the monitoring system by unpredictable high frequency components of noise when testing the low frequency performance characteristics of the monitoring system. The two-tone test signal has a low frequency tone and a lower level high frequency tone which overrides the high frequency component of noise. The two-tone test signal is synthesized according to the BTSC specification to produce a "perfect" left-only signal for both tones.

REFERENCES:
RE540 BTSC TV Stereo Generator Specification Sheet & Letter, RE Instruments, 31029 Center Ridge Rd., Westlake, Ohio 44145, 9/17/86.

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