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Quectel Manuals
Control Unit
GSM Series
Audio design manual
Quectel GSM Series Audio Design Manual
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Contents
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Table of Contents
About the Document
Contents
Table of Contents
1 Introduction
Summary
Safety Information
2 Audio Circuit Design
Audio Circuit Reference
M1X
Microphone Reference Circuit
Receiver Reference Circuit
Headset Reference Circuit
M95
Microphone Reference Circuit
Receiver Reference Circuit
Headset Reference Circuit
SPK Reference Circuit
M80
Microphone Reference Circuit
Receiver Reference Circuit
Headset Reference Circuit
SPK Reference Circuit
Ringtone
Hands-Free Application at Channel AIN1/AOUT1
Suggestion for Audio Layout
TDD Noise Solution
Suggestion for Mechanical Design
Component of SPK
Component of Microphone
3 Description and Suggestion
AT Command
At+Qaudch
How to Modify Volume
At+Qmic
At+Clvl
At+Qsidet
Echo Algorithm
Description of Par0, Par2 and Par12
Recommended Application Field
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GSM
Module
Audio Design Guide
GSM/GPRS Series
Version: GSM_Module _Audio_Design_Guide_V3.0
Date: 2013-05-24
www.quectel.com
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This manual is also suitable for:
Gprs series
M1x
M95
M80
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