Journal Forum

Synthetic Reverberator - January 1960

Sound Board: High-Resolution Audio - October 2015

Synchronized Swept-Sine: Theory, Application, and Implementation - October 2015

Access Journal Forum

AES E-Library

Infinite Sustain Through Controlled Feedback in Amplified Guitars

Document Thumbnail

In state-of-the-art amplified guitars, the duration of string vibration known as "sustain" is determined by the total mechanical structure of the instrument and its environment. The sustain of a given guitar may be reduced by damping; but except for compression techniques applied to the picked up signal, there has been no way of significantly increasing sustain by any added means even though this is considered highly desirable. Exactly such means are the subject of this paper. First, some typical decay characteristics of guitar strings will be described. Then the concept of the servo-controlled string vibration termed "active guitar" will follow. The controller requires a command variable generator which calculates the nominal value varying with time from the process inputs. For use with acoustic guitars, there is an additional acoustic feedback eliminator controlled by the nominal value. Finally, all the features achieved by using the active guitar concept will be summarized.

AES Convention: Paper Number:
Publication Date:

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.

Learn more about the AES E-Library

E-Library Location:

Start a discussion about this paper!

Facebook   Twitter   LinkedIn   Google+   YouTube   RSS News Feeds  
AES - Audio Engineering Society