eSeSA1026

Product OverviewThe third generation in the Audience earSmart™ Series 100 line of Advanced Voice processors, the earSmart A1026 mixed-signal system-on-chip (SOC) solution delivers dynamic noise suppression and voice enhancement for mobile phones.

Featuring earSmart™ Advanced Voice technology based on the science of human hearing, along with improved performance features and a highly integrated, more compact and energy-efficient design, the A1026 processor significantly improves mobile call quality in noisy environments. By enhancing voice clarity and suppressing background noise, intermittent sounds and echoes – whether surrounding the caller or the person they’re speaking with – the earSmart A1026 processor enables clear communications in nearly any environment. It also automatically adjusts voice volume and equalization during calls to adapt to local noise interference. For mobile customers, the technology dramatically improves voice clarity and enables users to communicate when and where they want to, without having to adapt phone usage to surrounding noise.

Audience eSA1026 Voice Processor Product Brief

earSmart™ A1026 System-on-Chip Significantly Improves Mobile Call Quality Through Dynamic Noise Suppression and Voice Feature Enhancement

Mimics the Human Hearing SystemAudience’s earSmart technology is based on reverse-engineering functions of the human hearing system, modeling the human auditory pathway – from the inner ear to the brainstem, thalamus and cortex. Operating in much the same manner as people naturally perceive sounds, the A1026 voice processor in a mobile device can distinguish and evaluate sound signals to identify the primary conversation, and efficiently and effectively suppress surrounding background noise, to enable clear calls, even in noisy environments.

The Science Behind earSmart Audience is a pioneer in the development of commercial products based on the science of Computational Auditory Scene Analysis (CASA) to manage the characterization, grouping and processing of complex mixtures of sound. Using the principles of CASA, the A1026 voice processor makes mobile devices acutely aware of their surroundings, instinctively enhancing the voice communication and filtering out noise, for a clear voice experience. With this processing power, earSmart processors can deliver clear voice communications across all types of noise – including stationary, non-stationary, intermittent sounds, and echoes – whether surrounding the user or coming from the other end of the call.

earSmart Technology Diagram

Product Highlights

Powerful Processing

Featuring a high performance custom digital signal processor (DSP) core, the processor provides industry-leading capabilities for: • Stationary and non-stationary noise suppression • Receive noise suppression • Acoustic echo cancellation (AEC)• Programmable voice equalization (VEQ) algorithms

Enhanced Capabilities

To enhance performance, the A1026 voice processor features:• Customizable voice tuning capabilities• Transmit and receive post-equalization filtering to manage frequency response• A receive multi-band compander (MBC) for speaker distortion compensation, and acoustic echo cancellation

Easy Design-in Solution

Enabling easy design-in, the A1026 processor offers:• Auto microphone calibration to eliminate costly testing and per-unit adjustments on the production line• Easy integration with all mobile phone architectures

Efficient Platform This high performance chip is:• Packaged in a highly compact 2.7mm x 3.5mm, 40-pin WLCSP (0.5mm pitch)• Designed to meet RoHS and Green requirements• Able to fit any handset style or design • Low-power and offers approximately 30% power reduction from Audience’s previous generation products

in standard talk mode

Audience eSA1026Voice Processor Product Brief

Best-in-Class PerformanceFor handset manufacturers, the new earSmart™ A1026 Advanced Voice processor is designed to deliver energy-efficiency and easy integration into mobile devices, improving speed-to-market. It also offers new features to enhance performance. The A1026 system-on-chip includes a low-power, high-performance custom Digital Signal Processor (DSP) core in a highly compact package that easily integrates into existing mobile phone architectures. In addition, it provides an auto-calibration feature that eliminates the need to make per-unit adjustments on the production line. The A1026 voice processor also offers approximately 30% power reduction from Audience’s previous generation products in standard talk mode.

Additional feature enhancements for the new earSmart A1026 processor include customizable voice quality tuning capabilities, a post-equalization filter that allows handset manufacturers to manage frequency response, and a multi-band compander (MBC) to improve audio quality and reduce distortion for end-users when receiving communication, or using the phone’s speaker phone function.

Technical Details

Specifications • Power Supplies - Digital I/O: 1.8V~3.3V - LDO: 1.8V

• Up to 400kHz I2C Compatible Host Interface • Two Slave PCM Interfaces• Two Analog Microphone or Digital Microphone inputs• Analog Audio Output

A1026 Typical Application Diagram

Copyright © 2011 Audience, Inc. All rights reserved. Audience, the Audience logo, earSmart, the earSmart logo and all other Audience product names and slogans are trademarks or registered trademarks of Audience, Inc., or its affiliates in the U.S. and other countries. Other names may be trademarks of their respective owners.

Audience Corporate Headquarters 440 Clyde Avenue, Mountain View, CA 94043 | phone: +1.650.254.2800 | fax: +1.650.254.1440 | www.audience.com

AUD-PB-eSA1026-V0911