Smart Speakers
Cirrus Logic offers a comprehensive sound enhancement solution for portable speakers ranging from mono/ voice only applications to premium stereo entertainment systems. Cirrus Logic’s SoundClear® technology for portable, wireless applications has the power, range and intelligent adaption to enable clear and natural voice command under all these conditions.
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Highlighted components are offered by Cirrus Logic.
System Features
Instant Adapt NREC
Noise reduction and echo cancellation regardless of the surrounding environment.
HD Voice Support
Wideband and narrow-band support for voice processing.
FlexEQ Dynamic Equalization
Automatically adjust frequency response and gains to changing ambient conditions for an outstanding user experience.
Barge In Capabilities
Hands-free control even when your device is playing multi-channel audio.
Audio Post Processing
Cirrus Logic offers a wide range of post processing including in-house and from some of the biggest software brands in the world.
Hi-Fi Playback
Using multi-path headset amplifier technology, our smart codecs can deliver high quality audio for any application.
Recommended
Audio Amplifiers
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CS35L45
Class D Audio Amplifier + Class H Boosted 15 V Converter with Integrated DSP Enables Maximum Loudness, Higher Bass
Smart Codecs
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CS47L24
Ultra Compact, Low Power Smart Codec with Dual Core DSP
SoundClear compatible -
CS47L35
Smart Codec with Low Power Audio DSP
SoundClear compatible -
CS47L90
Low Power, Highly Integrated Audio Codec Featuring SmartHIFI for Mobile Playback
SoundClear compatible -
WM8281
Low Power Smart Codec with Echo Cancellation
SoundClear compatible
Request to Buy Dev Kit
Cirrus Logic CRD1569-1 Voice Capture Development Kit for Amazon AVS.
DigiKey (Part #598-2471-KIT-ND) »
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Highlighted components are offered by Cirrus Logic.
System Features
Two-Mic Voice Capture Reference Board
Features the Cirrus Logic CS47L24 dual core, low power smart codec and two CS7250B digital MEMS microphones, plus SoundClear® algorithms for voice capture, noise suppression, and echo cancellation.
Raspberry Pi 3 Board
Runs Cirrus Logic Control Console with AVS client, Sensory’s TrulyHandsfree™ wake word engine tuned to “Alexa”, SoundClear® tuning and diagnostics. Provides LAN, WLAN and hotspot connectivity for headless operation.
Control Console
Intuitive GUI replaces the need for Raspbian line commands saving hours of setup and start up time. Enables both headless (no display, keyboard or mouse), Wi-Fi and hotspot operation to emulate real product connectivity. Enables remote control, diagnostics and tuning through any internet browser.
Travel Case and Demo/Eval Platform
Durable case with custom anti-static foam inserts to hold and protect all kit components while traveling or in storage. Lid folds flat for use as eval/demo platform holding all components in place and avoiding speaker vibration.
International Power Supply
Full 2.5A @5V to power entire system plus RPi3 peripherals including international travel adapter set. Alternatively, 5V rechargeable battery supply (not included) can be used to emulate battery powered products.
8GB SD Card
High performance Micro SD Card preloaded with OS and all required firmware.
Compact, Passive Speaker Box
Enables full kit functionality without additional components. Simulates the audio experience of AVS enabled products with small integrated speakers. Can be replaced by actual transducer selected for product. Alternatively, just plug any amplified speaker into voice capture boards stereo jack.
Ribbon Cable
Allows voice capture and RPi3 boards to be separated instead of stacked when required to fit in true form factor prototype and demonstration platforms.
Recommended
Smart Codecs
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CS47L24
Ultra Compact, Low Power Smart Codec with Dual Core DSP
SoundClear compatible
Technical Documentation
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Voice Capture Dev Kit for AVS User Guide
Nov 6, 2017, v1.1 : 792 Kb -
Voice Capture Dev Kit for AVS Quick Start Guide
Oct 4, 2017, v1.2 : 923 Kb -
Voice Capture Dev Kit for AVS Dual Microphone Tuning Guide
Jul 6, 2017, v1.2 : 1.7 Mb -
Voice Capture Dev Kit for AVS Product Bulletin
Jul 6, 2017, DS1189 : 489 Kb -
Voice Capture Dev Kit for AVS Technology Bulletin
Jul 6, 2017 : 1.5 Mb -
CS47L24 Product Data Sheet
May 11, 2017, Rev 4.1 : 3.4 Mb -
Voice Capture Dev Kit for AVS Schematics
Apr 27, 2017, v2.00 : 579 Kb
Licensing and Support
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Voice Capture Dev Kit for AVS Licensing Info
Jul 6, 2017 : 68 Kb