没有合适的资源?快使用搜索试试~ 我知道了~
首页CSR8670 官方指导双MIC降噪设计指南
资源详情
资源评论
资源推荐
Qualcomm Technologies International, Ltd.
Confidential and Proprietary – Qualcomm Technologies International, Ltd.
NO PUBLIC DISCLOSURE PERMITTED: Please report postings of this document on public servers or websites to:
DocCtrlAgent@qualcomm.com.
Restricted Distribution: Not to be distributed to anyone who is not an employee of either Qualcomm Technologies International, Ltd. or its
affiliated companies without the express approval of Qualcomm Configuration Management.
Not to be used, copied, reproduced, or modified in whole or in part, nor its contents revealed in any manner to others without the express
written permission of Qualcomm Technologies International, Ltd.
Qualcomm BlueCore and Qualcomm cVc are products of Qualcomm Technologies International, Ltd. Other Qualcomm products referenced
herein are products of Qualcomm Technologies International, Ltd. or Qualcomm Technologies, Inc. or its other subsidiaries.
Qualcomm is a trademark of Qualcomm Incorporated, registered in the United States and other countries. BlueCore and cVc are trademarks
of Qualcomm Technologies International, Ltd., registered in the United States and other countries. Other product and brand names may be
trademarks or registered trademarks of their respective owners.
This technical data may be subject to U.S. and international export, re-export, or transfer (“export”) laws. Diversion contrary to U.S. and
international law is strictly prohibited.
Qualcomm Technologies International, Ltd. (formerly known as Cambridge Silicon Radio Limited) is a company registered in England and
Wales with a registered office at: Churchill House, Cambridge Business Park, Cowley Road, Cambridge, CB4 0WZ, United Kingdom.
Registered Number: 3665875 | VAT number: GB787433096.
© 2014-2016 Qualcomm Technologies International, Ltd. All rights reserved.
Qualcomm® cVc™
Two Microphone Handsfree
Design Guidelines
CS-225939-AN Rev.4
September 26, 2016
CS-225939-AN Rev. 4 Confidential and Proprietary – Qualcomm Technologies International, Ltd. 2
MAY CONTAIN U.S. AND INTERNATIONAL EXPORT CONTROLLED INFORMATION
Revision history
Revision Date Description
1 20 FEB14 Original publication of this document
2 12 MAY 14 Editorial updates
3 20 MAY 14 Editorial updates
4 26 SEP 16 Updated to reflect QTIL rebranding
CS-225939-AN Rev. 4 Confidential and Proprietary – Qualcomm Technologies International, Ltd. 3
MAY CONTAIN U.S. AND INTERNATIONAL EXPORT CONTROLLED INFORMATION
Contents
1 Introduction ........................................................................................................................... 4
2 cVc 2-mic Handsfree system ................................................................................................ 5
2.1 Uni-directional microphones ...................................................................................................................... 7
2.1.1 Beamforming of directional microphones facing side-to-side.................................................... 7
2.2 Omni-directional microphones ................................................................................................................... 9
3 Example design ....................................................................................................................11
3.1 Microphone specification ......................................................................................................................... 11
3.2 Microphone positioning ............................................................................................................................ 11
3.3 cVc details ............................................................................................................................................... 12
Document references .............................................................................................................13
Terms and definitions .............................................................................................................14
Figures
Figure 2.1: 2-mic Handsfree system .............................................................................................................................. 5
Figure 2.2: Typical In-car noise environment ................................................................................................................. 6
Figure 2.3: 2-mic configurations overview ...................................................................................................................... 7
Figure 2.4: Beamforming of directional microphones facing side-to-side ....................................................................... 8
Figure 2.5: Beam pattern of directional microphones facing side-to-side ....................................................................... 8
Figure 2.6: Beamforming of omni-directional microphones ............................................................................................ 9
Figure 2.7: Beam pattern of omni-directional microphones .......................................................................................... 10
Tables
Table 3-1 Example microphone specification ............................................................................................................... 11
Table 3-2 Example microphone positioning ................................................................................................................. 11
Table 3-3 cVc details .................................................................................................................................................... 12
剩余13页未读,继续阅读
forget121
- 粉丝: 4
- 资源: 3
上传资源 快速赚钱
- 我的内容管理 收起
- 我的资源 快来上传第一个资源
- 我的收益 登录查看自己的收益
- 我的积分 登录查看自己的积分
- 我的C币 登录后查看C币余额
- 我的收藏
- 我的下载
- 下载帮助
会员权益专享
最新资源
- 数据结构1800题含完整答案详解.doc
- 医疗企业薪酬系统设计与管理方案.pptx
- 界面与表面技术界面理论与表面技术要点PPT学习教案.pptx
- Java集合排序及java集合类详解(Collection、List、Map、Set)讲解.pdf
- 网页浏览器的开发 (2).pdf
- 路由器原理与设计讲稿6-交换网络.pptx
- 火电厂锅炉过热汽温控制系统设计.doc
- 企业识别CIS系统手册[收集].pdf
- 物业管理基础知识.pptx
- 第4章财务预测.pptx
- 《集成电路工艺设计及器件特性分析》——实验教学计算机仿真系.pptx
- 局域网内共享文件提示没有访问权限的问题借鉴.pdf
- 第5章网络营销策略.pptx
- 固井质量测井原理PPT教案.pptx
- 毕业实习总结6篇.doc
- UGNX建模基础篇草图模块PPT学习教案.pptx
资源上传下载、课程学习等过程中有任何疑问或建议,欢迎提出宝贵意见哦~我们会及时处理!
点击此处反馈
安全验证
文档复制为VIP权益,开通VIP直接复制
信息提交成功
评论3