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SoundField Introduces DSF-3 Digital Surround Decoder

UK microphone manufacturer SoundField is introducing the DSF-3 Digital Surround Decoder at the 123rd AES convention in New York City (booth #851). The DSF-3 is a 1U, 19-inch rackmount hardware processor with an all-digital signal path that decodes SoundField microphone or B-format (4-channel, phase-coherent) signals to digital 5.1 surround or stereo audio (or both simultaneously) at any sample rate. The DSF-3 can be paired with either a DSF-1 Music Surround Mic System or DSF-2 Broadcast Surround Mic System for an all-digital multichannel solution.

The DSF-3 is said to improve upon SoundField’s previous analog decoder performance with enhanced sound quality and greater channel separation.

All SoundField microphone systems comprise a multiple capsule microphone and matching preamp to deliver SoundField’s B-format signal. The B-format 4-channel archival medium contains the three-dimensional acoustical information necessary to decode into mono, stereo, M/S, 5.1, 6.1 or 7.1 delivery formats.

Five-segment LED displays on the left side of the front panel act as input level meters, and each 5.1 channel’s output level control has separate green signal-present and red clip LEDs. The front panel has separate output level controls for each of the six channels in the 5.1 signal (L/R/C/Ls/Rs and the LFE sub-bass channel), and additional rotary switches and buttons allow users to alter the virtual pickup pattern and orientation of the microphone without physically handling it. The perceived front and rear width of the 5.1 pickup pattern may be continuously altered with two more rotary controls, and a Focus control allows the user to vary the localization characteristics of the 3-D soundfield. The entire 5.1 soundfield can be rotated 360 degrees using a rotary encoder with a live front panel readout. This last control also affects a separate stereo output, for which separate front panel controls are provided to adjust the stereo polar patterns and perceived stereo width.

For more information, visit SoudField’s U.S. distributor, TransAudio Group, at