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A Dynamic Phase Meter for Program Material

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A method is described for a metering device that is capable of measuring the phase angle relationship of two audio program channels. A treatment of alternate techniques is given. Mathematical analysis shows how dynamic measurement can be performed. In addition, a circuit is realized and described that incorporates these techniques and allows for an indication of phase differences over an 80-dB range. Error sources of the meter are identified.

JAES Volume 36 Issue 6 pp. 481-486; June 1988
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AES - Audio Engineering Society