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
Improving Loudspeaker Performance for Active Noise Control Applications
Actuator performance plays an important part in active noise and acoustic control. The loudspeakers that are normally used as actuators in many active noise and acoustic control applications add significantly to the dynamics of the control loop and can be detrimental to the controller's performance. By compensating a loudspeaker with a technique similar to motional feedback, the loudspeaker performance is enhanced for applications such as control of acoustic enclosures. A method to compensate a loudspeaker easily and reliably in order to approximate constant volume velocity behavior over the piston-mode frequency range is presented and demonstrated. This decouples the actuator from the system being controlled and reduces the impact of the loudspeaker's dynamics over the control bandwidth. Experimental results of the proposed method using a 5-in (127-mm) loudspeaker are included.
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.