标题: Rhythm R3710预配置DSP混合系统重点详析 [打印本页] 作者: admin 时间: 2015-4-27 23:58 标题: Rhythm R3710预配置DSP混合系统重点详析 Rhythm R3710 description
Rhythm R3710 is a pre−configured DSP system designed specifically for Invisible−In−Canal (IIC) hearing aid devices. Available in the industry’s smallest hybrid form−factor, it is well suited for hearing aid designs that are placed deep in the ear canal. Using miniaturized advanced packaging techniques, ON Semiconductor enables hearing aid manufacturers to take advantage of the highly compact size to produce IIC hearing aids that fit a greater portion of the market. Featuring iSceneDetectenvironmental classification, adaptive noise reduction, feedback cancellation, and up to 8−channel WDRC, Rhythm R3710 provides the advanced features and performance level typically found in high−end products.
Acoustic Environment Classification − The iSceneDetect environmental classification algorithm is capable of analyzing the hearing aid user’s acoustic environment and automatically optimizes the hearing aid to maximize comfort and audibility.
iLog6.0 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 during follow up visits.
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.
Adaptive Feedback Canceller − Automatically reduces acoustic feedback and allows for an increase in the stable gain while minimizing artifacts for music and tonal input signals.
Adaptive Noise Reduction − Rhythm R3710’s adaptive noise reduction algorithm monitors noise levels independently in 128 individual bands and employs advanced psychoacoustic models to provide user comfort.
Tinnitus Masking − Rhythm R3710 is equipped with a noise source that can be used to mask tinnitus. The noise can be shaped, attenuated, and duty cycled then summed into the audio path either before or after the volume control.
In−situ Tone and Noise Generator − The narrow−band noise and tone 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 R3710 also supports the following features: 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 R3710 also encompasses industry−leading security features to avoid cloning and software piracy.
Features
Advanced Research Algorithms:
iSceneDetect Environmental Classification
128−band Adaptive Noise Reduction
Adaptive Feedback Cancellation (AFC)
Log 6.0 Datalogging
Tinnitus Masking Noise Generator
Evoke Acoustic Indicators
1, 2, 4, 6 or 8 Channel WDRC
Feedback Path Measurement Tool
AGC−O with Variable Threshold, Time Constants, and Optional Adaptive Release
16−band Graphic Equalizer
Narrow−Band Noise Stimulus
SDA or I2C Programming
8 Biquadratic Filters
2 Analog Inputs
16 kHz or 8 kHz Bandwidth
4 Fully Configurable Memories with Audible Memory Change Indicator
96 dB Input Dynamic Range with HRXHeadroom
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 Digital Volume Control with
Programmable Range
Rocker Switch Support
20−bit Audio Processing
thinSTAX Packaging
E1 RoHS Compliant Hybrid
thinSTAX Packaging
Hybrid Typical Dimensions:0.180 x 0.123 x 0.060 in.
(nominal)(4.57 x 3.12 x 1.52 mm)
摘 要：Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the recommended Operating Conditions is not.
摘 要：The iSceneDetect feature, when enabled, will sense the environment and automatically control the enhancement algorithms without any user involvement.
