Android，如何初始化录音机？

Question

我创建了 AudioMeter 类，并在其承包商中编写了以下代码：

public AudioMeter(){
        channel_config = AudioFormat.CHANNEL_CONFIGURATION_STEREO;//And also Mono
        format = AudioFormat.ENCODING_PCM_16BIT;
        sampleRate = AudioTrack.getNativeOutputSampleRate(AudioManager.STREAM_SYSTEM); //8000
        bufferSize = AudioRecord.getMinBufferSize(sampleRate, channel_config, format);

        recorder = new AudioRecord(MediaRecorder.AudioSource.MIC, sampleRate, channel_config, format, bufferSize);

        audioBuffer = new short[bufferSize];

        Log.i("AudioMeter", "Created successfully.");
    } 

但是当我运行模拟器时它说 01-29 03:47:07.418: E/AudioRecord(432): Unsupported configuration: sampleRate 44100, format 1, channelCount 2" 我在模拟器中添加了“Audio Recording Support”和“Audio Playback Support”。

任何帮助将不胜感激，因为我已经查看了这段代码一段时间了！

Answer 1

Emulator 不支持 CHANNEL_CONFIGURATION_STEREO & sampleRate = (11025, 16000, 22050, and 44100)，如果你想成功运行，请使用 CHANNEL_CONFIGURATION_MONO & SampleRate =8000（它只支持每秒 8000 个样本）。