android – 将单声道转换为立体声

概述我正在尝试将16位单声道声音转换为立体声.声音存储为字节数组,因此据我所知,这意味着我一次复制两个字节. 我这样做了吗？我制作的代码改变了频率. 编辑： 我成功生成单音并将其存储在byte [] generatedSnd中 播放单声道(工作)： AudioTrack audioTrack = null; // Get audio 我正在尝试将16位单声道声音转换为立体声.声音存储为字节数组,因此据我所知,这意味着我一次复制两个字节.

我这样做了吗？我制作的代码改变了频率.

编辑：

我成功生成单音并将其存储在byte [] generatedSnd中

播放单声道(工作)：

AudioTrack audioTrack = null;                                   // Get audio track    try {        audioTrack = new AudioTrack(AudioManager.STREAM_MUSIC,sampleRate,AudioFormat.CHANNEL_OUT_MONO,AudioFormat.ENCoding_PCM_16BIT,(int)numSamples*2,AudioTrack.MODE_STATIC);        audioTrack.setStereoVolume(0f,1f);        audioTrack.write(generatedSnd,generatedSnd.length);     // Load the track        audioTrack.play();                                          // Play the track    }    catch (Exception e){ }

转换为立体声：

int monoByteArrayLength = generatedSnd.length;    byte [] stereoGeneratedSnd = new byte[monoByteArrayLength * 2];    stereoGeneratedSnd[0] = generatedSnd[0];    stereoGeneratedSnd[2] = generatedSnd[0];    for (int x=1; x<monoByteArrayLength; x+=2) {        stereoGeneratedSnd[x*2-1] = generatedSnd[x];        stereoGeneratedSnd[x*2+1] = generatedSnd[x];        if (x+1 < monoByteArrayLength) {            stereoGeneratedSnd[x*2] = generatedSnd[x+1];            stereoGeneratedSnd[x*2+2] = generatedSnd[x+1];        }    }    AudioTrack audioTrack = null;                                   // Get audio track    try {        audioTrack = new AudioTrack(AudioManager.STREAM_MUSIC,AudioFormat.CHANNEL_OUT_STEREO,1f);        audioTrack.write(stereoGeneratedSnd,stereoGeneratedSnd.length);     // Load the track        audioTrack.play();                                          // Play the track    }    catch (Exception e){ }

我想要做的是从一个频道播放声音

解决方法 双倍算法的输出为0,1,2,3,4,5,5.

更简单(和更正确)的加倍方式是：

for (int i = 0; i < monoByteArrayLength; i += 2) {    stereoGeneratedSnd[i*2+0] = generatedSnd[i];    stereoGeneratedSnd[i*2+1] = generatedSnd[i+1];    stereoGeneratedSnd[i*2+2] = generatedSnd[i];    stereoGeneratedSnd[i*2+3] = generatedSnd[i+1];}

输出：0,5

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