Lauten Audio and Dr Charles Chen Ph.D have made a patent application for a new microphone capsule bias arrangement.

The allpication describes a double-bias circuit for condenser microphone capsules that generates a balanced output directly from a capsule without using a phase splitter or transformer in the circuit path. ‘For the traditional single bias circuit, only one signal is retrieved from the capsule,’ Chen explains. ‘To generate two balanced signals from the single signal, the options are to use an output transformer, or a phase-splitter circuit in the case of a transformer-less design. The problem is these types of phase splitter circuits restrict the dynamic range allowed.’

Dr Chen’s double-bias invention allows a balanced output to be derived from the condenser capsule without the need for an transformer or phase-splitter stage. His double-bias circuit claims to overcome splitter circuits’ distortion or clipping of the two output signals, negatively affecting the microphone’s dynamic range.

Lauten Audio plans to implement the invention in future models of condenser microphones.

More: www.lautenaudio.com

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