VC Spotlight: Boundary Effects on Sources at Low Frequencies

A sound source, such as a loudspeaker, will experience an increase in directivity with increasing frequency, as the wavelength of sound becomes small compared to the baffle’s size. Since the baffle the driver is mounted on is larger than the driver, this occurs at a lower frequency than for the driver diaphragm itself. This article was published originally in Voice Coil, July 2016

Now available, Voice Coil May 2016 features an in-depth article by Wolfgang Klippel on how to use digital signal processing (DSP) to improve loudspeaker performance. We also look at a recent Bose patent of a device configured to be worn around the neck, and we characterize a ribbon-type transducer from Bozhen and two new beryllium tweeters from Scan-Speak.