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R3920 Datasheet(PDF) 1 Page - ON Semiconductor |
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R3920 Datasheet(HTML) 1 Page - ON Semiconductor |
1 / 13 page © Semiconductor Components Industries, LLC, 2015 September, 2016 − Rev. 5 1 Publication Order Number: R3920/D RHYTHM R3920 Preconfigured DSP System for Hearing Aids Description RHYTHM t R3920 is a preconfigured hearing health processor based on a DSP platform. Featuring 16 channels of Wide Dynamic Range Compression and Impulse Noise Reduction, R3920 encompasses a rich set of advanced sound processing algorithms and is ideal for high end, full-featured hearing aids. The R3920 hybrid is available in one of the industry’s smallest form-factors and is well-suited for all hearing aid types, including those placed deep in the ear canal. Features and Benefits Wide Dynamic Range Compression (WDRC) − R3920 contains 16 Channels of Wide Dynamic Range Compression, each with individual settings for Squelch Attentuation and Threshold, Low Level Gain, High Level Gain, Upper and Lower Thresholds, and Compression Ratio. Independent level detectors for both Squelch and WDRC are available with customizable attack and release times set in each channel. Impulse Noise Reduction (INR) – Loud , impulsive sounds in the environment such as slamming doors, dropped items, or clattering dishes can become uncomfortably or dangerously loud in a traditional hearing aid. The INR algorithm actively monitors and processes the incoming acoustic signal for such sounds. It ensures that the output sound preserves the integrity of the speech signal and is descriptive of the environment, while maintaining an optimal comfort level for the hearing aid user. Acoustic Environment Classification − iSceneDetect t analyzes incoming acoustic signals in order to determine the appropriate classification for a given acoustic environment. Six separate environments are supported by iSceneDetect: quiet, speech in quiet, noise, speech in noise, music, and wind. The feature uses this classification to automatically adjust settings of other features for optimum audio performance. iLog t 4.0 Datalogging − Enables the recording of various hearing aid parameters such as program selection, volume setting and ambient sound levels. The sampling interval can be configured to record from every 4 seconds up to once every 60 minutes. The manufacturer can program the fitting system to retrieve the data for further analysis after an extensive period of wearing the hearing aid. This allows the audiologist to fine tune the hearing aid and further counsel the end-user. Automatic Adaptive Directionality − The Automatic Adaptive Directional Microphone (ADM) algorithm automatically reduces the level of sound sources that originate from behind or to the side of the hearing aid wearer without affecting sounds from the front. The algorithm can also gather input from the acoustic iSceneDetect environmental classifier algorithm and automatically select whether directionality is needed or not, translating into additional current savings. www.onsemi.com 25 PAD HYBRID CASE 127DN PAD CONNECTION MARKING DIAGRAM R3920−CFAB XXXXXX R3920−CFAB = Specific Device Code XXXXXX = Work Order Number (Bottom View) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 VIN1 19 ARD1 20 ARD2 21 N/C 22 N/C 23 N/C 25 24 VIN2 TIN DAI VC D_VC SDA CLK MS1 VREG MGND GND PGND OUT+ OUT− VBP VB MS2 See detailed ordering and shipping information on page 9 of this data sheet. ORDERING INFORMATION |
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