The Lectrosonics DM812 is a powerful 8 Input x 12 Output digital audio processing,
mixing and routing system. The primary applications are sound reinforcement
and conferencing in boardrooms, courtrooms, worship centers, distance learning
systems, hotels and other applications with multiple microphones and loudspeakers.
The design represents a milestone in DSP technology in its basic architecture
and in its processing speed and efficiency.
The basic architecture of the Lectrosonics DM812 consists of 8 mic/line inputs
and 12 outputs with a full DSP-based crosspoint matrix that allows every input
to be routed to any or all outputs. Following the A-D conversion at each input,
the signal passes through multiple DSP filters, ADFE (automatic digital feedback
eliminator), a compressor and a digital delay. In the matrix, gain is adjustable
from -69 to +20 dB in 1 dB steps at each crosspoint. Each of the 12 outputs
provides a digital delay, multiple DSP filters and a compressor/limiter.