A loudspeaker test technique is described which depends on near-field pressure measurements made in a non-anechoic environment. Derived equations show that (in the piston range low frequency region) the ratio of far-field to near-field pressures is independent of frequency and related only by two length parameters. The technique allows extremely simple measurements to be made of frequency response, power response, distortion, efficiency and driver/system parameters. The technique is similar in concept to that described by Small [8], but is much simpler to implement and is accurate over a wider frequency range.
(See document for exact affiliation information.)
Click to purchase paper as a non-member or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member Join the AES. If you need to check your member status, login to the Member Portal.
