Cost Effective Remote Control System for Analog Audio Mixers

At musical events, all the signals are summed using an audio mixer, then the resulting signal is delivered to the main sound system. In small or medium venues, the placement of the audio mixer is often not optimum (in front of the stage). The sound engineer is in the situation in which he must make the required adjustments while being placed in a corner of the hall or right near the stage. The audience is usually placed directly in the front of the stage. The different placement of the sound engineer and the majority of the public leads to differences between the sound heard by the audience and the mixer operator. To fix this problem, the sound engineer must be able to walk around the venue and adjust the mixer from a distance. The digital audio mixers which already offer remote control are costly. The paper presents a system designed to allow the remote control the attenuation of the audio signals entering an analog mixer using an Android application which can run on a phone or tablet. This allows a critical upgrade to analog audio mixers with much lower costs than an upgrade to a digital mixer would involve.