现在,当我传递硬件(或仿真器)不喜欢的参数组合时,我只是得到一个错误.所以我不得不“猜测”：

int bufferSize; 
int sampleRate;

// does the audio hardware do 44 kHz? 
sampleRate = 44100;
bufferSize = AudioRecord.getMinBufferSize(sampleRate,AudioFormat.CHANNEL_CONFIGURATION_MONO,AudioFormat.ENCODING_PCM_16BIT);

if (bufferSize != AudioTrack.ERROR_BAD_VALUE) {
    // Nope,how about 22 kHz? 
    sampleRate = 22050;
}

bufferSize = AudioRecord.getMinBufferSize(sampleRate,AudioFormat.ENCODING_PCM_16BIT);

if (bufferSize != AudioTrack.ERROR_BAD_VALUE) { 
    ...

当然有更好的方法！

This chart表示唯一支持的音频输入采样率是8 kHz？那是对的吗？