Gobo (recording)

A gobo, in the context of audio recording, is a portable acoustic control device used to create separation between sound sources during recording sessions. It functions primarily as a sound absorber and/or reflector, helping to reduce unwanted bleed, reverberation, and room ambience from reaching microphones.

Gobos are typically constructed as panels or screens, often featuring a rigid frame filled with sound-absorbing materials like fiberglass, mineral wool, or acoustic foam. One or both sides may be covered with fabric to enhance their aesthetic appeal and protect the absorptive material. Some gobos also incorporate reflective surfaces, such as wood or hardboard, to allow for selective reflection of sound energy.

The primary purpose of a gobo is to isolate individual instruments or vocalists, allowing engineers to capture cleaner, more direct signals. By strategically placing gobos around a sound source or microphone, engineers can minimize spill from other instruments or the natural acoustics of the recording space. This provides greater control over the final mix, allowing for more flexibility in shaping individual sounds and creating a balanced overall sonic image.

Gobos come in various sizes, shapes, and configurations, from small, single-panel units to larger, multi-panel enclosures. Some are designed to be free-standing, while others are intended to be mounted on microphone stands or connected to form larger acoustic barriers. They are an essential tool in many recording studios and live sound environments, providing a versatile and effective solution for managing sound reflections and reducing bleed.