第一种方式比较标准,需要发出beep的声音之后才开始录音
第二种方式是filed有name属性,且有option选项(也可以是gramer),因此最后的值是option的值(这目前是猜测,还没有进行完整的测试)
下面的例子来源于:http://www.optimsys.cz/support/examples/example13.php
<?xml version="1.0" encoding="UTF-8"?> <vxml version="2.0" xmlns="http://www.w3.org/2001/vxml"> <meta name="description" content="record example"/> <meta name="author" content="OptimSys, s.r.o., Czech Republic (http://www.optimsys.cz)"/> <meta name="copyright" content="free for any purpose"/> <form id="start"> <catch event="error.unsupported.record"> <prompt>Recording is not supported in the current configuration, no audio source specified.</prompt> <exit/> </catch> <record name="recording" maxtime="10s" finalsilence="1s" beep="true"> <noinput> nothing was recoreded </noinput> Recording starts after beep <filled>You recorded: <audio expr="recording"/></filled> </record> <field name="answer"> <noinput> Hey, don't sleep! </noinput> <nomatch> say 'yes' or 'no' </nomatch> <prompt> Do you want to present details about the recording? </prompt> <grammar root="main" tag-format="semantics/1.0-literals"> <rule id="main" scope="public"> <one-of> <item><ruleref uri="#yes"/><tag>yes</tag></item> <item><ruleref uri="#no"/><tag>no</tag></item> </one-of> </rule> <rule id="yes"> <one-of> <item>yes</item> <item>yeah</item> <item>yep</item> <item>sure</item> </one-of> </rule> <rule id="no"> <one-of> <item>no</item> <item>not</item> <item>nope</item> </one-of> </rule> </grammar> <filled> <if cond="answer!='yes'"> OK, good bye. <exit/> </if> </filled> </field> <block> <prompt>Recording size is <value expr="recording$.size"/> bytes.</prompt> <prompt>Recording duration is <value expr="recording$.duration"/> milliseconds.</prompt> <if cond="recording$.termchar !== undefined"> <prompt>Recording was interrupted by DTMF key <value expr="recording$.termchar"/>.</prompt> <elseif cond="recording$.maxtime"/> Recording was interrupted since it exceeded time limit. <else/> Recording was finished without any interruption. </if> </block> </form> </vxml>