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earSmart™ eS515 Smart Sound Processor

The earSmart eS515 is the world’s first Smart Sound Processor, integrating award-winning earSmart Advanced Voice technology with a high-performance, low-power audio codec for best-in-class voice and multimedia experience. With a suite of new features around communications, speech recognition and entertainment, the earSmart eS515 allows consumers to be heard, be understood and be there.





Be Heard | With Best in Class Voice Processing

The earSmart eS515 features 3rd generation Advanced Voice processing features. The earSmart eS515 delivers the world’s first true support of three-microphones, where all three are used simultaneously to gather more information about the user’s surroundings and deliver vastly improved voice quality, even when the user is in a noisy environment. The earSmart eS515 also features the world’s first implementation of de-reverberation technology for mobile devices, significantly reducing the echo effect heard in spaces such as conference rooms and hallways.





Be Understood | With Improved Automatic Speech Recognition Assist

ASR Assist technology directly addresses the challenge faced by many speech recognition applications today, namely their failure to recognize spoken words and complete assigned tasks because of disruptive background noise. The earSmart eS515 uses custom hardware-accelerated algorithms to isolate voice from surrounding environmental noise, dramatically improving the accuracy of speech-enabled applications such as voice search and speech to text. Mobile devices equipped with Audience ASR Assist technology deliver improved speech application reliability, accuracy and task completion – even in noisy, distracting environments.





Be There | With Enhanced Multimedia Capture and Playback

Mobile devices today are relied upon for media capture as much as they are for communication, and the desire for captured audio to be the same high definition (HD) quality as video has never been more apparent. The earSmart eS515 Smart Sound Processor features the world’s first two-microphone 48 KHz noise suppression implementation for recording clean, high definition audio. The earSmart eS515 also features Audio Zoom, the world’s first selective audio capture feature to be deployed for mobile devices, allowing users to dynamically switch between narrator and interview modes, capturing both voices with crystal clear accuracy while removing background noise.



The Science Behind the earSmart eS515 Smart Sound Processor

es515 Chip diagram

 

Product Highlights

Voice Features

  • Non-Stationary and Stationary Noise suppression (Close talk, Far talk)
  • ASR Assist mode
  • Audience Hi-Fi Voice, Voice Stretch and Acoustic Echo Cancellation
  • Automatic Gain Control, Voice Equalization, Post Equalization and Multiband Compressor
  • Narrowband (8kHz), Wideband (16kHz) and Super Wideband (24 kHz)signal processing
  • Transmit De-reverb

Audio Features

  • UI Tone Mixing, Audio Multiband Compressor (MBC), Parametric EQ and Stereo Widening
  • Dynamic Range Compressor (DRC)
  • Equalizer Engine and Virtual Bass Boost support (OpenSL ES1.1 compliant)
  • Configurable Beep Generator
  • Multimedia recording features
    • Audio Zoom directional sound capture modes for camcorder application
    • Enhanced Stereo Recording: Presets for optimized camcorder performance in multiple everyday, real-life environments
    • Stereo 2-Mic Stationary Noise Suppression

Key Device Features

  • Audience earSmart Voice Processing core
  • 4 High performance DACs with104dB dynamic range
  • 4.8 mW Stereo Playback at 48kHz
  • 1.1 W Stereo Class-D Speaker Driver
  • 30 mW Stereo Class-G Headphone Driver
  • 80 mW Earpiece Driver
  • 2 Line Output Drivers
  • 2 High performance 92dB SNR ADCs with Mic PGAs
  • 1 Auxiliary ADC for line input with PGA
  • SLIMbus Interface
  • Digital Audio Ports
    • 3 Master/Slave PCM/I2S ports
    • Supports 4 digital Mic inputs and 1 output
    • Up to 192kHz sample rates
  • I2C,UART, and SLIMbus Host Interfaces