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
Obtaining a Highly Directive Center Channel from Coincident Stereo Microphone Signals
Time-frequency based post-processing applied to a coincident stereo recording is proposed to generate an audio signal with a highly directive directional response pointing straight forward. Assuming an ideal coincident stereo microphone, the directional response of this center channel is effectively time and frequency invariant. Further, the look direction can be steered to left and right front directions. The technique is based on the insight that the signal which predicts left from right, modified by limiting the magnitude of the frequency domain prediction gains, has a center forward directional response. The center channel is generated using both, a left-right and a right-left magnitude-limited-predictor signal. Applications of the proposed scheme are use of stereo microphones as ``digital steerable shot gun microphones' and center channel generation for music recording.
Click to purchase paper or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!
This paper costs $20 for non-members, $5 for AES members and is free for E-Library subscribers.