A Fuzzy-Based System for Real-Time Volume Control of Electric Bass Guitars

The Direct Injection (DI) is used by electric bass guitar players during live house performances and recordings. A DI is an impedance converter for connecting an instrument such as an electric guitar, electric bass guitar, or electronic keyboard directly to a mixer or interface. When an electric bass guitars output is connected to a DI, the mixer or loudspeaker may be damaged when the volume is high and is generated loud noise. Therefore, Public Address (PA) engineers shut off the input signal to the mixer. There is a rule that the electric bass guitar should only be connected after signaling to the engineer during live performances and recordings. However, beginners or people who do not know the rules sometimes connect an electric bass guitar without signaling the engineer and the mixer and speakers are sometimes destroyed by the loud noise input. In this paper, we propose a real-time volume control based on fuzzy system for electric bass guitars to prevent damage to equipment such as mixers and loudspeakers. The experimental results show that the proposed system is able to automatically control the volume of electric bass guitar when playing sound.