Rhythm R3910 is a pre-configured hearing health processor based on the powerful WOLVERINE™ DSP platform. The Rhythm R3910 features iSceneDetect™ environmental classification, adaptive noise reduction, superior feedback cancellation, fully automated and adaptive microphone directionality and up to 8-channel WDRC ideal for high-end, full featured products. Available in one of the industry's smallest form-factors, it is well suited for all hearing types, including those placed deep in the ear canal.
The iSceneDetect 1.0 environmental classification algoalgorithm is capable of analyzing the hearing aid wearer's acoustic environment and automatically optimizes the hearing aid to maximize comfort and audibility.
iLog™ 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 fitting system can present the data to help the fitting specialist fine tune the hearing aid and counsel the wearer.
EVOKE™ advanced acoustic indicators
Allows manufacturers to provide more pleasing, multi-frequency tones simulating musical notes or chords to indicate events such as program or volume changes.
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 environment and automatically select whether directionality is needed or not, translating into additional current savings.
Adaptive feedback canceller
Automatically reduces acoustic feedback. It allows for an increase in the stable gain while minimizing artifacts for music and tonal input signals.
Adaptive noise reduction
The Rhythm R3910's adaptive noise reduction algorithm monitors noise levels independently in 128 individual bands and employs advanced psychoacoustic models to provide user comfort. Based on a phase cancellation method, it provides up to 30dB of added stable gain. It also features rapid adjustment for dynamic feedback situations and resistance to tonal inputs.
Tinnitus masking
The Rhythm R3910 is equipped with a noise source that can be used to mask tinnitus. The noise can be shaped and attenuated and then summed into the audio path either before or after the volume control.
In-situ tone generator
The narrow-band noise stimulus feature can be used for in-situ validation of the hearing aid fitting. The frequency, level and duration of the stimuli are individually adjustable.
Other key features
Rhythm R3910 also supports the following features: FrontWave® directional processing, built-in feedback path measurement, cross fading between audio paths for click-free program changes, 16-band graphic equalizer, 8 generic biquad filters (configurable as parametric or other filter types), programming speed enhancements, optional peak clipping, flexible compression adjustments, direct interfaces to analog or digital volume control , rocker switch, direct audio input and telecoil. Rhythm R3910 also encompasses industry-leading security features to avoid cloning and software piracy.
Features
Advanced algorithms:
iSceneDetect™ 1.0 environmental classification
Automatic Adaptive Directional Microphone (ADM)
FrontWave® directionality
128-band adaptive noise reduction
Adaptive Feedback Cancellation (AFC)
iLog 4.0 datalogging
EVOKE™ advanced acoustic indicators
Tinnitus masking noise generation
Narrow-band noise stimulus
Auto telecoil with programmable delay
Feedback path measurement tool
1, 2, 4, 6 or 8 channel WDRC
AGC-O with variable threshold, time constants and optional adaptive release
16-band graphic equalizer
SDA or I2C programming
8 biquadratic filters
4 analog inputs
16 kHz or 8 kHz bandwidth
6 fully configurable memories with audible memory change indicator
96 dB input dynamic range with HRX™ Headroom Extension
128-bit fingerprint security system and other security features to protect against device cloning and software piracy
High fidelity audio CODEC
Soft acoustic fade between memory changes
Drives zero-bias 2-terminal receivers
Internal or external digitial volume control with programmable range
Rocker switch support
20-bit audio processing
thinSTAX® packaging
E1 RoHS Compliant Hybrid
Hybrid typical dimensions:
0.215 x 0.124 x 0.067 in.
[5.46 x 3.15 x 1.70 mm]
Block Diagram
To see this Block Diagram in higher resolution please click on the image.
