📄 java语音播放事例 - oscar999的专栏 - csdnblog.htm
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<DIV class=postText><FONT size=2><SPAN
style="FONT-FAMILY: Arial">AudioSystem类充当取样音频系统资源的入口点。此类允许查询和安装在系统上的</SPAN><BR
style="FONT-FAMILY: Arial"><BR style="FONT-FAMILY: Arial"><SPAN
style="FONT-FAMILY: Arial">混频器。AudioSystem包括许多在不同格式间转换音频数据的方法，以及在音频文</SPAN><BR
style="FONT-FAMILY: Arial"><BR style="FONT-FAMILY: Arial"><SPAN
style="FONT-FAMILY: Arial">件和流文件之间进行转换的方法。它还提供不用显式处理混频器即可直接从</SPAN><BR
style="FONT-FAMILY: Arial"><BR style="FONT-FAMILY: Arial"><SPAN
style="FONT-FAMILY: Arial">AudioSystem获得Line的方法</SPAN><BR
style="FONT-FAMILY: Arial"><BR style="FONT-FAMILY: Arial"><SPAN
style="FONT-FAMILY: Arial">AudioFormat
是在声音流中指定特定数据安排的类。通过检查以音频格式存储的信息，可以发现在二进制声音数据中解释位的方式。</SPAN><BR
style="FONT-FAMILY: Arial"><BR style="FONT-FAMILY: Arial"><SPAN
style="FONT-FAMILY: Arial">Line.Info类</SPAN><BR style="FONT-FAMILY: Arial"><SPAN
style="FONT-FAMILY: Arial">
Line.Info对象包含关于行的信息。只有Line.Info本身提供的信息是该行的Java类。Line.Info子类添加该行的其他种类的信息。这些附加信息取决于通过Line.Info子类所描述的行种类实现的Line子接口。</SPAN><BR
style="FONT-FAMILY: Arial"><BR style="FONT-FAMILY: Arial"><SPAN
style="FONT-FAMILY: Arial">DataLine.Info类</SPAN><BR
style="FONT-FAMILY: Arial"><SPAN style="FONT-FAMILY: Arial">
除了继承自超类Line.Info的类信息以外，DataLine.Info还提供特定于数据行的其他信息。这些信息包括：受数据行支持的音频格式
其内部缓冲区的最大和最小</SPAN><BR style="FONT-FAMILY: Arial"><BR
style="FONT-FAMILY: Arial"><SPAN
style="FONT-FAMILY: Arial">接口SourceDataLine</SPAN><BR
style="FONT-FAMILY: Arial"><SPAN style="FONT-FAMILY: Arial">
源数据行是可以写入数据的数据行。它充当其混频器的源。应用程序将音频字节写入源数据行，这样可处理字节缓冲并将它们传给混频器。混频器可以将这些样本与取自其他源的样本混合起来，然后将该混合物传递到输出端口之类的目标（它可表示声卡上的音频输出设备）</SPAN><BR
style="FONT-FAMILY: Arial"><BR style="FONT-FAMILY: Arial"><BR
style="FONT-FAMILY: Arial"><SPAN style="FONT-FAMILY: Arial">程序事例：</SPAN><BR
style="FONT-FAMILY: Arial"><BR style="FONT-FAMILY: Arial"><SPAN
style="FONT-FAMILY: Arial">import java.io.File;</SPAN><BR
style="FONT-FAMILY: Arial"><BR style="FONT-FAMILY: Arial"><SPAN
style="FONT-FAMILY: Arial">import javax.sound.sampled.AudioFormat;</SPAN><BR
style="FONT-FAMILY: Arial"><SPAN style="FONT-FAMILY: Arial">import
javax.sound.sampled.AudioInputStream;</SPAN><BR style="FONT-FAMILY: Arial"><SPAN
style="FONT-FAMILY: Arial">import javax.sound.sampled.AudioSystem;</SPAN><BR
style="FONT-FAMILY: Arial"><SPAN style="FONT-FAMILY: Arial">import
javax.sound.sampled.DataLine;</SPAN><BR style="FONT-FAMILY: Arial"><SPAN
style="FONT-FAMILY: Arial">import javax.sound.sampled.SourceDataLine;</SPAN><BR
style="FONT-FAMILY: Arial"><BR style="FONT-FAMILY: Arial"><SPAN
style="FONT-FAMILY: Arial">public class Playtest {</SPAN><BR
style="FONT-FAMILY: Arial"><BR style="FONT-FAMILY: Arial"><SPAN
style="FONT-FAMILY: Arial"> /**</SPAN><BR
style="FONT-FAMILY: Arial"><SPAN style="FONT-FAMILY: Arial">
* @param args</SPAN><BR style="FONT-FAMILY: Arial"><SPAN
style="FONT-FAMILY: Arial"> */</SPAN><BR
style="FONT-FAMILY: Arial"><SPAN style="FONT-FAMILY: Arial">
public static void main(String[] args) {</SPAN><BR
style="FONT-FAMILY: Arial"><SPAN style="FONT-FAMILY: Arial">
// TODO Auto-generated method stub</SPAN><BR
style="FONT-FAMILY: Arial"><SPAN style="FONT-FAMILY: Arial">
try {</SPAN><BR style="FONT-FAMILY: Arial"><SPAN
style="FONT-FAMILY: Arial">
AudioInputStream ais = AudioSystem.getAudioInputStream(new
File(</SPAN><BR style="FONT-FAMILY: Arial"><SPAN
style="FONT-FAMILY: Arial">
"c:\\abc.wav"));//
获得音频输入流</SPAN><BR style="FONT-FAMILY: Arial"><SPAN
style="FONT-FAMILY: Arial">
AudioFormat baseFormat = ais.getFormat();//
指定声音流中特定数据安排</SPAN><BR style="FONT-FAMILY: Arial"><SPAN
style="FONT-FAMILY: Arial">
System.out.println("baseFormat="+baseFormat);</SPAN><BR
style="FONT-FAMILY: Arial"><SPAN style="FONT-FAMILY: Arial">
DataLine.Info info = new
DataLine.Info(SourceDataLine.class,</SPAN><BR style="FONT-FAMILY: Arial"><SPAN
style="FONT-FAMILY: Arial">
baseFormat);</SPAN><BR
style="FONT-FAMILY: Arial"><SPAN style="FONT-FAMILY: Arial">
System.out.println("info="+info);</SPAN><BR style="FONT-FAMILY: Arial"><SPAN
style="FONT-FAMILY: Arial">
SourceDataLine line = (SourceDataLine)
AudioSystem.getLine(info);</SPAN><BR style="FONT-FAMILY: Arial"><SPAN
style="FONT-FAMILY: Arial">
// 从混频器获得源数据行</SPAN><BR style="FONT-FAMILY: Arial"><SPAN
style="FONT-FAMILY: Arial">
System.out.println("line="+line);</SPAN><BR
style="FONT-FAMILY: Arial"><SPAN style="FONT-FAMILY: Arial">
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