Shure M91 ED-GSL

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Brand: Shure

The Shure M91 ED-GSL is a microphone designed for shotgun applications in video production, broadcast, and other audio capture scenarios where pickup of sound sources located far away is required. The ED-GSL stands for Expansion and Directivity-Gain Reduction System, which is a feature that enables the user to adjust the polar pattern of the microphone for different recording scenarios.The polar pattern refers to the directionality of the microphone's sensitivity to sound. In the case of the M91 ED-GSL, a shotgun pickup pattern is employed, which is highly directional, with maximum sensitivity to sounds in front of the microphone and significantly reduced sensitivity to sounds coming from the sides and rear. This makes it ideal for recording audio when there's a lot of noise coming from the sides or background.The gain reduction system is designed to prevent distortion and interference from strong sounds, such as wind and other environmental factors, that can cause other types of microphones to deteriorate in sound quality. This is especially important in outdoor environments where wind noise can be a significant issue for microphone performance.The M91 ED-GSL also features an expansion mode, which allows the microphone to pick up more of the surrounding audio when necessary, such as in interviews where the interviewer wants to capture more of the speaking environment. This mode essentially extends the directional pickup pattern, making it more sensitive to audio from all sides, rather than just the front.Overall, the Shure M91 ED-GSL is a versatile and advanced microphone designed for professional audio capturing tasks. Its advanced features make it particularly well-suited for video production, broadcast, and other applications where clear, distinct audio quality is critical.