While experimental prototypes of digital loudspeaker arrays usually use a PCM format, preliminary results show that sigma–delta technology is also a viable alternative. In the test configuration, an FPGA is connected to 32 autonomous true-digital amplifiers driving a corresponding number of miniature moving-coil loudspeakers organized in an array. The sigma–delta approach produces comparable results but with lower harmonic distortion, especially off axis and at mid-frequencies.
(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.
