ON Semiconductor R3920-CFAB-E1B

Description
RHYTHM R3920 is a preconfigured DSP system for hearing aids.
It features 16 channels of Wide Dynamic Range Compression and Impulse Noise Reduction.
R3920 encompasses a rich set of advanced sound processing algorithms.
It is ideal for highend, fullfeatured hearing aids.
The R3920 hybrid is available in one of the industry's smallest formfactors.
It is wellsuited for all hearing aid types, including those placed deep in the ear canal.

Features
Wide Dynamic Range Compression (WDRC):
16 Channels of Wide Dynamic Range Compression.
Individual settings for Squelch Attenuation and Threshold, Low Level Gain, High Level Gain, Upper and Lower Thresholds, and Compression Ratio.
Independent level detectors for both Squelch and WDRC.
Customizable attack and release times in each channel.
Impulse Noise Reduction (INR):
Actively monitors and processes the incoming acoustic signal for loud, impulsive sounds.
Ensures that the output sound preserves the integrity of the speech signal and is descriptive of the environment.
Maintains an optimal comfort level for the hearing aid user.
Acoustic Environment Classification:
iSceneDetect analyzes incoming acoustic signals to determine the appropriate classification for a given acoustic environment.
Six separate environments are supported: quiet, speech in quiet, noise, speech in noise, music, and wind.
Automatically adjusts settings of other features for optimum audio performance.
iLog 4.0 Datalogging:
Enables the recording of various hearing aid parameters such as program selection, volume setting, and ambient sound levels.
Sampling interval can be configured to record from every 4 seconds up to once every 60 minutes.
Manufacturer can program the fitting system to retrieve the data for further analysis.
Allows the audiologist to finetune the hearing aid and further counsel the enduser.
Automatic Adaptive Directionality:
Automatically reduces the level of sound sources that originate from behind or to the side of the hearing aid wearer.
Gathers input from the acoustic iSceneDetect environmental classifier algorithm.
Automatically selects whether directionality is needed or not, translating into additional current savings.

Applications
Hearing aids