earSmart™ eS305 Voice Processor
The earSmart™ eS305 voice processor features innovations that deliver high-definition (HD) voice quality in tablets and mobile phones. With multiple digital interfaces, the eS305 processor is designed to integrate easily into tablet or a mobile phone architecture. The eS305 voice processor provides dramatic voice enhancement and wideband noise suppression delivering clear, life-like conversations for video chats, VoIP and phone calls over a broadband Wi-Fi® or mobile 4G wireless networks.
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Product Highlights
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Powerful Processing
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- Wideband and narrowband non-stationary noise suppression, both transmit and receive
- Handheld speakerphone (HHS) non-stationary noise suppression, transmit and receive
- Acoustic echo cancellation (AEC)
- Automatic receive voice equalization (VEQ) to boost voice above the ambient acoustic environment
- Parametric equalizer for enhancing audio playback
- HD voice listening experience over narrowband networks
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Accessibility Features
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To provide customization and personalization options for OEMs, the eS310 processor includes:
- Personal Receiver Equalization -- to allow customers to select a receive frequency response that matches their hearing characteristic
- Voice Stretch Mode – slows a calling party’s voice in real-time, retaining pitch accuracy, for improved comprehension during rapid conversations or for voice recording playback, including voicemail
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Customization Features
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To optimize performance, the eS305 processor includes:
- A post-equalization (Post-EQ) filter for voice color tuning and to allow device manufacturers to manage frequency response
- A receive multi-band compander (MBC) to improve audio quality and offer speaker distortion compensation
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Easy Integration
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Enabling easy design-in, the eS305 processor includes:
- Audience’s AuViD 2.0 graphical software application to support the design and integration process, featuring step-by-step visual design tools to efficiently tune the audio features of the eS305 processor and customize voice capabilities
- Auto microphone calibration to eliminate costly testing and per-unit adjustments on the production line
- Graphical filter design tools for easy customization of Post-EQ and MBC filter design
- All-digital interfaces designed to fit any tablet or handset style, in any design configuration
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Efficient Platform
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Designed for energy efficiency, the low-power, high performance chip is:
- Packaged in a highly compact 3.5mm x 3.5mm, 32-pin BGA (0.5mm pitch).
- Meets RoHS and Green requirements
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Specifications
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Power Supplies
Host Interface
- Up to 1Mbps I2C interface
- Up to 3Mbps UART
Digital Audio Interface
- Four I2S/PCM interfaces
- Supports digital microphone input
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