基于Qualcomm CSR8675的主动降噪(ANC)蓝牙智能耳机解决方案
原标题:基于Qualcomm CSR8675的主动降噪(ANC)蓝牙智能耳机解决方案
本方案是给予CSR8675的一款支持蓝牙BT5.0的双模智能耳机,具有功能如下:
1,能够通过手机APP调节EQ音效
2,可以通过手机选择关闭打开ANC,过滤环境噪音
3,耳机切换上一曲,下一曲,暂停,播放
4,通过手机播放网络音乐,通过MIC 监听语音,识别语音,实时跟云端交互,可以查询你感兴趣的信息,比如:“今天的天气怎么样”,“最近有什么好玩的八卦新闻”,等。
场景应用图
产品实体图
展示板照片
方案方块图
核心技术优势
1. A2DP
2. AVRCP
3. PBAP
4. TWS
5. BATTRY Level report
方案规格
1. 语音识别
2. APP控制音效
3. 配合APP做网络交互实现语音搜索引擎的功能
【CSR8675】
技术文档:
CSR8675 Bluetooth Audio SoC
Embedded Flash Solution for Premium Bluetooth Audio Applications
CSR8675 is a premium tier single-chip solution delivering high quality wireless audio performance and supporting the development of highly differentiated premium wireless audio products. Integrated support for aptX, aptX HD, Active Noise Cancellation and Qualcomm TrueWireless stereo.
Specifications
Bluetooth
Bluetooth Version: Bluetooth 5.0
Bluetooth Radio: +10dBm maximum output power (typical), -90dBm receiver sensitivity (basic rate, typical)
USB
USB Support: Supports USB charger detection
USB Version: USB 2.0 (Full Speed)
General Audio
Audio Technology: Qualcomm TrueWireless™ Technology, Qualcomm® Broadcast Audio technology, Qualcomm® aptX™ audio technology, Qualcomm® cVc™ audio technology, 24 bit audio data path
Qualcomm® aptX™ playback support: aptX Classic, aptX HD, Qualcomm® eXtension program
Analog Microphone Input: 2 analog mics/line inputs (up to 96kHz sample rate)
Digital Microphone Input: 6 digital mics
Analog DAC output: 2 analog DAC channels (up to 192kHz sample rate)
Microphone Bias Generator: 2 microphone bias generators
DSP
DSP Technology: Qualcomm® Kalimba™ DSP
DSP Clock Speed: 80 MHz
Charging
Maximum Current: 200 mA on chip, 500 mA with external transistor
Memory
Flash: 16 Mb internal flash, Up to 64 Mb external flash
Interface
Supported Interfaces: Master I²C, 2x PCM/I²S, 2x SPDIF, UART
Input/Output
ADC: 2 ADCs
General Purpose IOs: 32
DAC: 2 DACs
PWM (LED): 3
Input
Touch Sensor Inputs: 6 touch sensor inputs
Package
Package Type: VFBGA, WLCSP, 4.8 x 4.8 x 0.6 mm 0.5 mm pitch WLCSP, 6.5 x 6.5 x 1 mm 0.5 mm pitch VFBGA
Pitch: 0.5mm Pitch
CSR8675 is a premium tier single-chipsolution in our CSR86xx Bluetooth audioSoC portfolio designed to deliver highquality wireless audio performance andsupportdevelopment of highly differentiatedpremium wireless audio products.
CSR8675 is part of the CSR86xx portfolio,a range of silicon platforms for wirelessaudio applications which integrate a dualmodeBluetooth radio, a low power DSP, an application processor, a battery charger,memory and various audio and hardware interfaces into a single-chip solution.
The CSR8675 SoC also integrates a dedicated active noise cancellation* block for earbud and headphone applications, and a 120Mhz Qualcomm® Kalimba™ DSP, which allows support for 24-bit audio over Bluetooth and aptX HD making it an ideal choice for premium audio products.
There is comprehensive Audio Development Kit (ADK) software for CSR8675 which includes Bluetooth applications, voice and music technologies and tuning tools for
reference headset and speaker applications and supports developers with greater differentiation capabilities in a single-chip design.
Qualcomm aptX, Qualcomm Kalimba and CSR8675 are products of Qualcomm Technologies, Inc. and/or its subsidiaries.
Premium tier Bluetooth® audio flash platform
with support for Qualcomm® aptX™ HD
Audio and active noise cancellation*
Qualcomm®
CSR8675
Bluetooth Audio Platform
This material is subject to change without notice.
87-CE852-1 Rev B
* Available via separate software download.
Features CSR8675 Block Diagram
Bluetooth Audio Flash Applications
• Speakerphones
• Stereo Speakers
• Stereo Headphones
• Stereo Headsets
• Wireless Earbuds
• Soundbars
Qualcomm cVc, Qualcomm meloD, GAIA and Qualcomm TrueWireless Stereo are products of Qualcomm Technologies, Inc.
and/or its subsidiaries. eXtension is a program of Qualcomm Technologies, Inc. and/or its subsidiaries.
©2018 Qualcomm Technologies International, Ltd. All Rights Reserved. Qualcomm is a trademark of Qualcomm Incorporated,
registered in the United States and other countries. Qualcomm TrueWireless is a trademark of Qualcomm Incorporated. aptX, cVc,
meloD and Kalimba are trademarks of Qualcomm Technologies International, Ltd., registered in the United States and other
countries. The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and any use of such marks
by Qualcomm Technologies International, Ltd. is under license. Other products and brand names may be trademarks or registered
trademarks of their respective owners. 0518A
To learn more visit: qualcomm.com
z Bluetooth version 4.2 compliant
z 120 MHz programmable Kalimba DSP with integrated multipoint A2DP and HFP audio applications
z aptX, aptX Low Latency, aptX HD, MP3,AAC and SBC audio codecs
z 2-mic Qualcomm® cVc™ 8th Generation Noise Cancellation Technology with wideband speech
z Audio tuning suite with audio enhancements and two 5-band EQs
z GAIA V2 and associated Android & iOS example apps for enhanced connectivity with mobile devices
z Link Layer Topology support for enhanced multi-device co-existence
z Qualcomm TrueWireless™ Stereo
z Two I2S ports for enhanced audio connectivity capabilities with external components
z Support for Apple MFi1 & Apple ANCS for enhanced communication with iOS devices
z Qualcomm® meloD™ Audio Processing stereo widening technology
z Compatible with third party solutions available from selected eXtension Program members
责任编辑:David
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