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Pre-configured DSP targets IIC hearing aids

30 Oct 2012

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ON Semiconductor has rolled out a pre-configured digital signal processing (DSP) system aimed at invisible-in-canal (IIC) hearing aid devices. The company's Rhythm R3710 hybrid features advanced speech and audio signal processing algorithms and features the company's advanced miniaturized packaging techniques, which enable hearing aid manufacturers to develop highly discrete products intended to be placed deep in the ear canal, boasted ON Semi.

Measuring 4.57 x 3.12 x 1.52mm, the Rhythm R3710 hybrid is 20 per cent smaller than existing Rhythm family hybrids, and is the industry's smallest hybrid form-factor, added the company.

The DSP flaunts up to eight wide dynamic range compression (WDRC) channels and boasts the iSceneDetect environmental classification algorithm that automatically optimises the hearing aid to maximise comfort and audibility by analysing the hearing aid user's acoustic environment. In addition, the Rhythm R3710 uses an adaptive noise reduction algorithm that monitors noise levels independently in 128 individual bands and employs advanced psychoacoustic models to provide user comfort.

The product likewise makes use of iLog datalogging that according to the company enables logging of various parameters such as program selection, volume setting and ambient sound levels. Moreover, it has an adaptive feedback cancellation that automatically reduces acoustic feedback and allows for an increase in the stable gain while minimising artifacts for music and tonal input signals.

Rhythm R3710 is E1 RoHS compliant and uses ON Semiconductor's thinSTAX packaging.




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