SoundClear. Product Guide

Transcription

1 SoundClear Product Guide

2 Defining the Mobile Audio Experience Cirrus Logic s analog and mixed-signal audio ICs are at the heart of the world s most popular mobile devices. Portable audio leadership starts with expertise in developing ultra low power ICs and Cirrus Logic provides a complete audio portfolio converters, codecs, smart codes, voice processors and DSPs throughout the audio signal chain, from voice capture and processing to multimedia playback. We enhance the clarity of the audio signal to elevate the quality of the consumer experience. Our expertise is built on a legacy of innovation in signal processing components and a passion for the very best in sound quality. Cirrus Logic ICs give OEMs the total mobile audio experience because Cirrus Logic knows audio! Copyright 2014 Cirrus Logic, Inc. All rights reserved. Printed in the USA. Cirrus Logic, Inc. and its subsidiaries ( Cirrus ) believe that the information contained in this document is accurate and reliable. However, the information is subject to change without notice and is provided 'as is' without warranty of any kind (express or implied). Customers are advised to obtain the latest version of relevant information to verify, before placing orders, that information being relied upon is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgment, including those pertaining to warranty, indemnification, and limitation of liability. No responsibility is assumed by Cirrus Logic for the use of this information, or for infringement of patents or other rights of third parties. This document is the property of Cirrus Logic and, by furnishing this information, Cirrus Logic grants no license, express or implied, under any patents, mask work rights, copyrights, trademarks, trade secrets, or other intellectual property rights. No part of this publication may be copied, reproduced, stored in a retrieval system, or transmitted, in any form or by any means (electronic, mechanical, photographic, or otherwise) unless distributed in its entirety with all copyright notices attached. No part of this publication may be used as a basis for manufacture or sale of any items without the prior written consent of Cirrus Logic. Certain applications using semiconductor products may involve potential risks of death, personal injury, or severe property or environmental damage ( critical applications ). Cirrus Logic products are not designed, authorized, or warranted to be suitable for use in products surgically implanted into the body, automotive safety or security devices, life-support products or other critical applications. Inclusion of Cirrus Logic products in such applications is understood to be fully at the customer s risk and Cirrus Logic disclaims and makes no warranty of merchantability and fitness for particular purpose, with regard to any Cirrus Logic product that is used in such a manner. If the customer uses or permits the use of Cirrus Logic products in critical applications, customer agrees, by such use, to fully indemnify Cirrus Logic, its officers, directors, employees, distributors and other agents from any and all liability, including attorneys fees and costs, that may result from or arise in connection with these uses. Cirrus Logic, Cirrus, SoundClear, the Cirrus Logic and SoundClear logo designs are trademarks of Cirrus Logic, Inc. All other brand and product names in this document may be trademarks or service marks of their respective owners.. ii For more information, visit

3 The SoundClear Advantage Cirrus Logic recognizes the importance of elevating the sound clarity of the consumer mobile audio experience. SoundClear technology is designed to be both flexible and robust. SoundClear improves voice quality and speech recognition performance by eliminating noise through advanced processing features such as noise suppression, ASR Enhance and echo cancelation. SoundClear technology utilizes patented intelligent speech tracking and adaptive processing to exploit speech patterns and environmental conditions. The result is self-adjusting algorithms that emphasize voice quality, whether in a quiet room or the noisiest vehicle. The SoundClear algorithms deliver consistent audio performance with auto microphone calibration, automatic level control and automatic volume control. Voice Features: HD Voice/wideband and narrowband support Tx and Rx noise elimination AEC plus non-linear residual echo suppressor for superior full-duplex echo-free speakerphone operation Ambient aware parametric EQ for both Tx and Rx voice streams Automatic level control for both Tx and Rx voice streams Automatic volume control for Rx output Spectrally matched comfort noise generator for Tx stream and comfort noise generator for Rx stream Audio Playback Features: (Stereo Headphone and Speaker Modes) Pre-integrated Cirrus Logic algorithms Virtual surround Bass enhancement and bass virtualization Multi-band compressor Parametric EQ Optional third-party audio playback algorithms (CS48LV13 only) Dolby ** DTS ** Caller Voice Quality Speech Recognition Noise Reduction Echo Cancellation Clear Voice Voice Car Engine Crowd Noise Crying Baby Music Train Horn Speech Features: (CS48LV13 only) Cirrus Logic Voice Activity Detector (VAD) for low power always on applications Supports TrulyHandsfree* voice control and speaker verification by Sensory, Inc.* Cirrus Logic SoundClear ASR Enhance pre-processor for increased ASR accuracy in noise Car Engine Crowd Noise Crying Baby Music Train Horn Voice Clear Voice Voice Quality Speech Recognition Noise Reduction Echo Cancellation Recipient *Sensory and TrulyHandsfree are trademarks of Sensory, Inc. It is hereby notified that a third-party license from Sensory, Inc. is required to use or distribute its technology in any finished end-user or ready-to-use final product. **Dolby is a trademark of Dolby Laboratories, Inc. It is hereby notified that a third-party license from Dolby, Inc. is required to use or distribute its technology in any finished end-user or ready-to-use final product. DTS is a trademark of Digital Theatre Systems, Inc. It is hereby notified that a third-party license from DTS is required to use or distribute its technology in any finished end-user or ready-to-use final product. SoundClear Product Guide 1

4 Smartphones, Tablets Smartphones and tablets provide a unique set of audio challenges involving both voice processing and audio playback. SoundClear technology for voice processing delivers clear, reliable and consistent voice recognition and capture making it possible to enjoy calls or video audio regardless of the environment. Cirrus Logic s patented technology is optimized for multi-microphone designs and adaptively monitors, detects and processes incoming voice, echo and noise signal power levels to provide aggressive noise reduction and echo cancelation to achieve the clearest full-duplex communication and audio capture. By dynamically adjusting to environmental noise levels, SoundClear eliminates unwanted sounds, leaving only smooth and natural speech and audio while quickly adapting to changing acoustic conditions. System Features The SoundClear solution for smartphone applications provides the flexibility and performance necessary to eliminate noise and achieve remarkable sound quality. The solution includes: Supports near-talk and speakerphone modes as well as headset, audio/video capture and voice recognition modes 2-Mic and/or 1-Mic, wideband HD and narrowband Flexible microphone configurability supporting up to 35 db SNR improvement Automatic level and volume control Ambient aware dynamically adjusting FlexEQ InstantAdapt for better voice recognition performance Full-duplex, echo-free speakerphone operation Optimized for minimal power consumption 2 For more information, visit

5 Wireless Speakers Cirrus Logic offers a comprehensive sound enhancement solution for portable speakers ranging from mono/ voice only applications to premium stereo entertainment systems. Achieving clear, loud, echo-free, full-duplex operation on a portable speakerphone represents the ultimate challenge in mobile and hands-free devices. Any solution must be able to tolerate extreme Echo-to-Near Ratios (ENRs) in combination with a wide range of noise and acoustical environments from large open rooms down to cubicle spaces. Entertainment products also require the ability to deliver spacious stereo sound that engulfs the listener from a compact device regardless of location. Cirrus Logic s SoundClear technology for portable, wireless applications has the power, range and intelligent adaption to enable clear and natural voice communication under all these conditions. With SoundClear a portable speakerphone can provide high quality hands-free communication anywhere while transforming a connected smartphone into a robust entertainment device for music, video and games. System Features SoundClear technology for portable speakers is optimized to run on the CSR 8670 and BC5-MM. The solution includes: Both spectral and spatial noise reduction InstantAdapt for changing noise environments Dual microphone and single microphone solutions High Definition (HD) wideband processing True full-duplex, echo free speakerphone operation FlexEQ dynamic equalization for optimum intelligibility Automatic volume and level control Spectrally-matched Tx and Rx comfort noise SoundClear Product Guide 3

6 Wireless Headphones Cirrus Logic s SoundClear technology for wireless enabled headphone applications delivers clear, reliable and consistent audio performance making it possible to enjoy calls regardless of the talking environment. Whether it s a loud car environment, a windy street, or a crowded restaurant, SoundClear for headphones is optimized for dual microphone headphone designs and delivers high speech intelligibility, noise-free full-duplex performance and sound enhancement with quick adaptation to changing acoustic conditions. This patented technology adaptively monitors, detects and processes incoming voice, echo and noise signal power levels to provide aggressive noise reduction and echo cancelation to achieve the clearest full-duplex communication. By dynamically adjusting to the environmental noise levels, SoundClear eliminates unwanted sounds, leaving only smooth and natural speech in every phone call. System Features The SoundClear solution for wireless enabled headphone applications is optimized to run on the CSR 8670 and BC5-MM. The solution includes: Up to 21 db of noise cancelation Automatic volume control Automatic level control Dual microphone solution WindBlock wind noise reduction Full-duplex, echo-free operation Optimized for minimal power dissipation and long battery life Simple and fast tuning with RAPID2 tool 4 For more information, visit

7 Automotive Hands-Free Speakerphones SoundClear technology for Bluetooth hands-free automotive speakerphones and car radios provides dual and single microphone, narrow and HD wideband solutions to enhance the voice experience by eliminating echo, removing road and engine noise, and delivering loud, clear speech. The dual microphone solution works with varying microphone types and configurations to give OEMs and ODMs the greatest freedom to create stylish and innovative products, while the best-in-class single microphone solution is ideal for more cost-sensitive designs. Using CSR 8670 or BlueCore5-Multimedia (BC5-MM), combined with Cirrus Logic s Intelligent Adaptive Processing features, SoundClear is enabling the easiest to use, highest sound quality Bluetooth car audio products on the market today. System Features SoundClear technology for Bluetooth handsfree automotive speakerphones and car radio applications is optimized to run on the CSR 8670 and BC5-MM. The solution includes: Wideband HD Voice ASR enhancement Single and multi-mic solutions Echo-free, full-duplex performance Up to 45 db echo cancelation, 24 db of noise cancelation Pre-speaker compander for distortion free maximum volume Automatic volume and level control Optimized for minimal power dissipation and long battery life Simple, fast tuning with RAPID2 tool SoundClear Product Guide 5

8 CS48LV12, CS48LV13 Product Overview The CS48LV12 and CS48LV13 ultra low power voice processors provide a total voice processing solution for handset and hands-free communications. Featuring Cirrus Logic s patented SoundClear technology, these ICs deliver best-in-class voice quality and speech recognition by eliminating noise through advanced processing features including noise reduction, ASR Enhance and echo cancelation. The CS48LV12/13 feature an integrated media processor with built-in virtual surround, bass enhancement, bass synthesis, multi-band compression, and parametric EQ algorithms to enrich music playback through speakers and headphones. All are tunable through a simple GUI. In addition, the CS48LV13 provides Cirrus Logic's proprietary Voice Activity Detector for always-on ASR capability and integrated TrulyHandsfree voice control and speaker verification from Sensory, Inc.* Also available is Cirrus Logic s ASR Enhance, a specialized preprocessor to enhance the accuracy of any ASR (Automatic Speech Recognition) engine under noisy conditions. An expanded menu of third-party media playback algorithms from Dolby and DTS ** can also be integrated. *Sensory and TrulyHandsfree are trademarks of Sensory, Inc. It is hereby notified that a third-party license from Sensory, Inc. is required to use or distribute its technology in any finished end-user or ready-to-use final product. **Dolby is a trademark of Dolby Laboratories, Inc. It is hereby notified that a third-party license from Dolby, Inc. is required to use or distribute its technology in any finished end-user or ready-to-use final product. DTS is a trademark of Digital Theatre Systems, Inc. It is hereby notified that a third-party license from DTS is required to use or distribute its technology in any finished end-user or ready-to-use final product. Technical Features: Ultra low power consumption Typical NB in-call core power consumption <8 1 V Small form factor 20-ball WLCSP or 24-pin QFN package Simple digital interconnectivity I 2 S and SPI digital interfaces to host processor I 2 S digital interface to codec Power Supply V for core and memory V for I/O The CRD48L10 is the reference design development board for both the CS48LV12 and CS48LV13 6 For more information, visit

9 Product Selector Table Part Processor Speed (MIPS) Voice Bands Supported Speech Algorithms Supported Playback Algorithms Supported Core Voltage I/O Voltage Temp Range Package CS48LV12 32-Bit Dual MAC 130 Narrow, HD Voice/Wide None Cirrus Logic (included) V V 0 C to +70 C 40 C to +105 C 20 ball WLCSP 24 pin QFN CS48LV13 32-Bit Dual MAC 130 Narrow, HD Voice/Wide ASR Enhance (included) VAD (included) TrulyHandsfree (optional)* Cirrus Logic (included) Dolby (Optional)** DTS (Optional)** V V 0 C to +70 C 40 C to +105 C 20 ball WLCSP 24 pin QFN CS48LV13 Block Diagram RESET Optional TrulyHandsfree Voice Control from Sensory, Inc. BUSY Codec I 2 S Raw PCM I 2 S Clean PCM Codec Port PGA PGA Noise Reduction Comfort Noise Acoustic Echo Canceller Residual Echo Suppressor Full-Duplex Control + Voice Activity Detection + Double Talk Detection Automatic Volume Control SoundClear ASR Enhance (CS48LV13) NLP Automatic Level Control Advanced Media Processor Specrally Matched Comfort Noise Dynamic FlexEQ Dynamic FlexEQ ALC Noise Reduction PGA PGA Host Port I 2 S Clean PCM CLK SPI I 2 S Raw PCM INT SoC or Host Application Processor Near End From Far End SoundClear Product Guide 7

10 Reference Design CRD48L10 4in4out The CRD48L10-4in4out reference design demonstrates the performance of the CS48LV12 and the CS48LV13. The easiest use case of the CRD48L10-4in4out requires power (via a mini-usb connector) and some method of monitoring the audio, typically using headphones. Features: Audio Inputs - analog Absolute signal level: +2.1 V MAX, -0.3 V MIN Full scale amplitude (PGA VOL = 0 db): 1.44 Vpp Optical digital input Absolute signal level: +3.6 V MAX, -0.3 V MIN Headphone output Power: 2 x 17 mw (at THD+N = 60 db) Minimum Load: 16 Ohms Ear speaker output Full scale differential output: 2.3 Vpp (Digital Volume = 2.5 db) Power: 0.51 W (at THD+N = 60 db) Minimum load: 16 Ohms DSP control, debug and interrupts Codec reset, interrupt 8 For more information, visit

11 Tuning and Optimization Cirrus Logic offers RAPID2 (Real-time Audio Perfection and Integration Diagnostics), a PC-based tool that allows developers to easily monitor and tune programmable parameters in real time via a simple Graphical User Interface (GUI). Fast and easy tuning Intuitive block diagram view Real time control and diagnostics System-level measurements and statistics Comprehensive Support Experienced software, hardware, systems and audio engineers utilize state-of-the-art audio equipment to assist with individual customer projects. These audio support services include test and measurement, electrical analysis, mechanical analysis and recommendations on transducers and plastics. Applications engineers prepare comprehensive reports citing the acoustic analysis results and detailed recommendations to help customers drive products to market quickly while achieving the highest quality audio performance and network compliance. SoundClear Product Guide 9

12 Cirrus Logic, Inc. 800 West Sixth Street Austin, Texas T F Toll-Free Sales Support North America Asia Pacific Japan +81 (3) Europe/UK +44 (0) FEB 2014