How to hide your voice: Noise-cancelling bird photography blind

TL;DR

This paper introduces noise-cancelling bird photography blinds with optimized acoustic design, enabling close-range bird photography while minimizing disturbance, based on surveys and simulations of acoustic performance.

Contribution

It presents a novel acoustic design approach for bird photography blinds, integrating user expectations and numerical simulations to improve bird and human experience.

Findings

Acoustic design significantly reduces noise propagation.

Numerical simulations validate the effectiveness of the blinds.

Design considerations improve both bird and photographer well-being.

Abstract

Getting close to birds is a great challenge in wildlife photography. Bird photography blinds may be the most effective and least intrusive way if properly designed. However, the acoustic design of the blinds has been overlooked so far. Herein, we present noise-cancelling blinds which allow photographing birds at close range. Firstly, we conduct a questionnaire in the eco-tourism centre located in Yunnan, China. Thus, we determine the birders' expectations of the indoor sound environment. We then identify diverse variables to examine the impact of architectural and acoustic decisions on noise propagation. Finally, we examine the acoustic performance of the blinds by considering the birds' hearing threshold. The numerical simulations are performed in the acoustics module of Comsol MultiPhysics. Our study demonstrated that photography blinds require a strong and thorough acoustic design for both human and bird well-being.