DiyAudio. Geddes on Waveguides. Another point that I think needs to be understood is the impotance of CD, Constant Directivity. We must consider that without CD we cannot have a flat power response and a flat axial response. Most reserchers agree that the power response is very important for tone coloration while the direct response tends to be the major factor in imaging.
The industry is all too focused on getting a flat "axial" response, but to me this is probably the least important measurement. In a polar diagram, the axial response respresents a very small portion of the radiated sound field, its a small disk at the center, but the off axis points represent every greater areas - anuluses (sp?) Of increasing area. The axial point is therefor the least significant point for the power response - it has almost no effect on the power response.
For these reasons the power response and the polar responses must be smooth and flat even if the axial response is not. Thats all for now. The Womb - Powered by Electricity! Gearslutz.com. John Sayers' Recording Studio Design Forum • Index page. Front Page. DIY BASS TRAPS - Index.