Killyp Posted September 17, 2009 Share Posted September 17, 2009 Hi Blue-rooms. I keep hearing how a cone's diameter is half the wavelength at which the cone's dispersion restricts to 90°. Could anybody be kind enough to explain the science of why this happens, or at least point me in the direction of some good reading? Link to comment Share on other sites More sharing options...
Simon Lewis Posted September 17, 2009 Share Posted September 17, 2009 The chapter on direct radiator loudspeakers in Olson's Acoustical Engineering treats this quite comprehensively. That book (and its reproductions) may be out of print. Other texts to check include Collums' High Performance Loudspeakers, Borwick's Loudspeaker and Headphone Handbook and Ballou's Handbook for Sound Engineers (awaiting 4th edition release). However, these texts are somewhat pricey, and the entry on Directivity in Wikipedia under loudspeakers is worth reading, albeit as a brief introduction to the subject. The basic answer is that radiation from a 'piston' is dependent upon the piston radius and the wavelength of the sound being reproduced. Simon Link to comment Share on other sites More sharing options...
Killyp Posted September 17, 2009 Author Share Posted September 17, 2009 Thanks for the pointer. I knew there was something I'd forget to ask after one of Steve Jones' talk at plasa... Link to comment Share on other sites More sharing options...
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