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GA3226



The GA3226 is a mid-range digital product built on the VOYAGEUR™ platform. It offers stunning performance at an incredible value and features advanced functionality such as Adaptive Feedback Cancellation and twelve bands of graphic equalization. The GA3226 has superior 20-bit sound quality bestowed by the DSP technology on Voyageur.


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Product Details


The Adaptive Feedback Cancellation (FBC 3.0) offers cutting edge Added Stable Gain (ASG) with exceptional entrainment management. This innovative new algorithm provides ASG of up to 19 dB with dramatic reduction in artifacts for music and tonal input signals. FBC3.0 is based on the advanced phase cancellation method utilizing Adaptive FIR filtering techniques with LMS updates. FBC3.0 is fully integrated into the GA3226 product with completely automatic operation.

The Voyageur DSP technology of the GA3226 with 93dB of dynamic range and 20-bit signal processing offers matchless sound quality and bandwidth for the discerning hearing-aid user. Cross-fading between audio paths provides improved hearing comfort with click-free memory changes. The 12-band graphic equalization presents extreme flexibility for hearing-aid design. Additional features such as 8 generic biquad filters (configurable as parametric or other filter types), programming speed enhancements, optional peak clipping, flexible compression adjustments, programmable tones for memory change and low battery indicators, wideband gain, volume control with programmable range and industry-leading security features to avoid cloning and software piracy among other features are also available as features on the GA3226.

Features


  • SOUNDDesign® Advanced Research
    • Adaptive Feedback Cancellation 3.0
  • 1, 2 or 4 channel WDRC compression
  • 12-band graphic EQ
  • 8 biquadratic filters
  • Internal or external volume control with programmable range
  • AGCo with variable threshold and time constants
  • Multiple bandwidth support - 16kHz or 8kHz bandwidth
  • 4 fully configurable memories with audible memory change indicator
  • Soft acoustic fade between memory changes
  • High fidelity audio CODEC
  • 93dB input dynamic range with HRX™ Headroom Extension
  • 20-bit audio precision
  • Drives zero-bias 2-terminal receivers
  • 4 analog inputs
  • 2 memory select pads
  • 128-bit fingerprint security system and other security features to protect against device cloning and software piracy
  • Optimized programming speed
  • Full ARK software support for fast TTM
  • SOUNDFIT® turn-key fitting SW with customization options
  • thinSTAX® packaging
    • 0.215 x 0.124 x 0.067 in3
    • 5.46 x 3.15 x 1.70 mm3
  • E1 RoHS Compliant Hybrid


thinSTAX® enabled 0.215 x 0.124 x 0.067 in3 [5.46 x 3.15 x 1.70 mm3]

SOUNDDesign® Advanced Research - Adaptive Feedback Canceller 3.0


Adaptive Feedback Canceller 3.0 features:

  • Phase cancellation using Adaptive FIR with LMS updates to maintain forward gain
  • Added stable gain up to 19 dB
  • Strengthened Immunity to tonal inputs
  • Enhanced entrainment management
  • Excellent performance in all acoustic environments


Advanced signal processing:

  • 4 channel WDRC with fine control of crossover frequency placement
  • 12-band Graphic Equalizer designed for flexible frequency response shaping
  • Parametric filtering for frequency response smoothing
  • In-channel low level expansion
  • AGC-O output limiting
  • Minimum 20 bit end-to-end audio path
  • 93dB input dynamic range with HRX™
  • 4 versatile inputs
  • Advanced battery power management algorithms
  • Programmable Volume control range


Multiple sampling rates supported:

  • 32 kHz: unparalleled high fidelity audio quality
  • 16 kHz: lower current consumption


Improved hearing comfort:

  • 4 fully configurable memories with audible memory change indicator
  • Cross fading between audio paths for click-free memory changes
  • Support for open fittings


Industry-leading security features:

  • Protects intellectual property against device cloning and software piracy with:
  • 128-bit fingerprint security to match each hybrid with client software
  • Enhanced ARK software security to match product libraries with client software


SDA communication:

  • Advanced communication strategy ensuring fast programming without compromising configuration versatility


Fast time-to-market:

  • Application Resource Kit (ARK) software, quickly configures the product for rapid product launches
  • ARKonline® support, including easy-to-use Wizard for streamlined product component library creation
  • Optional turn-key fitting software SOUNDFIT® with customization choices


Manufacturing Ease:

  • Reflowable thinSTAX®
    • 0.215 x 0.124 x 0.067 in3
    • 5.46 x 3.15 x 1.70 mm3
  • E1 RoHS compliant environmentally friendly hybrid
  • Compact size enabling CIC applications
  • All pads located on the perimeter of the hybrid for easy inspection (no center pads)


Block Diagram




To see this Block Diagram in higher resolution please click on the image.


* VOYAGEUR™, SOUNDDesign®, HRX™, SOUNDFIT®, thinSTAX®, ARKonline® are trademarks or registered trademarks of Sound Design Technologies Ltd.

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