WHITE PAPERS

Field test of ReSoundAIR

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A high definition compression system for open fittings

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Signal processing for open fittings

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Clinical evolution of a non-occluding DSP hearing instrument

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An innovative non-occluding DSP device

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Summary - A high definition compression system for open fittings

Successful provision of amplification to individuals with high frequency hearing losses requires open fittings, which in turn places demands on the amplification system. These include flexible frequency shaping, compression to compensate for reduced dynamic range, extremely low noise and distortion, and a large propagation delay. The WarpOpen system employs innovative technology including minimum-phase FIR filtering and frequency warping to meet these demands. In addition, the ingenious system architecture makes certain that the desired gains for varying sound levels are actually achieved. In concert with the ReSoundAIR's inventive mechanical, acoustic and signal processing design, this allows hearing instrument dispensers to confidently fit patients in this traditionally hard-to-fit group.