Overview

The recording system is largely built around the Edirol R-4 Pro Digital Recording System (item D in figure 1). This system represents the largest single investment, as it accounts for approximately 50% of the total cost. The second-largest investment is in a high-quality, diffuse-field microphone. The selected microphone is designed for omni-directional recording with near-constant frequency response within a $360^{\circ}$ arc. Figure 1 depicts the different components and their roles in the recording system.

Figure 1: The different components of the experimental apparatus. The parts consist of (A) External deep-cycle battery (with charger, x2); (B) Alligator clip to 4-pin XLR power cable; (C) Edirol R-4 Pro Digital Recorder; (D) 4-pack NiMH internal batteries (x2); (E) Recharger for internal batteries (not deployed); (F) Monitor headphones (not deployed); (G) Monster XLR M-F Audio Cable; (H) Earthworks M30 High Definition Microphone; (I) Wind screen; (J) Shock mount; (K) Dynatran Carbon Fiber Tripod Base; (L) Acrylic Microphone Case (for storage); and (M) Edirol protective enclosure.