AES E-Library

AES E-Library

Using Basic Energy Time Curve (ETC) Measurements

Document Thumbnail

Energy Time Curve (ETC) measurements were originated by Richard C. Heyser early in the 1960s. ETC measurements are used by the authors as part of a comprehensive measurement system of time, energy, frequency (TEF-) licensed under the Heyser-California Institute Research Foundation patents. This paper presents basic ETC nomenclature, methodology, and displays. Interpretations of actual measurements stressing fundamental acoustic insights that ETC allow will be given. A brief discussion of the psychoacoustic priority of temporal patterning relative to musicians and mixing engineers will be included. There will be demonstrations of ETC measurements including examples of time of travel, distance of travel, direction of arrival, and 1/r corrected view of reflective surfaces.

AES Convention: Paper Number:
Publication Date:

Click to purchase paper as a non-member 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 $33 for non-members and is free for AES members and E-Library subscribers.

Learn more about the AES E-Library

E-Library Location:

Start a discussion about this paper!

AES - Audio Engineering Society