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[英]Live Audio Recording and Playing in Android and Thread & callback handling
[英]Live Recording and Playing in android latency issue
我正在Android中使用“ 實時音頻錄制和播放”,並使用Thread&callback處理此示例,以便通過回放進行錄制,但是在回放錄制的音頻時幾乎沒有延遲。 如何解決。
boolean m_isRun=true;
public void loopback() {
// Prepare the AudioRecord & AudioTrack
try {
buffersize = AudioRecord.getMinBufferSize(SAMPLE_RATE,
AudioFormat.CHANNEL_CONFIGURATION_MONO,
AudioFormat.ENCODING_PCM_16BIT);
if (buffersize <= BUF_SIZE) {
buffersize = BUF_SIZE;
}
Log.i(LOG_TAG,"Initializing Audio Record and Audio Playing objects");
m_record = new AudioRecord(MediaRecorder.AudioSource.MIC,
SAMPLE_RATE, AudioFormat.CHANNEL_CONFIGURATION_MONO,
AudioFormat.ENCODING_PCM_16BIT, buffersize * 1);
m_track = new AudioTrack(AudioManager.STREAM_ALARM,
SAMPLE_RATE, AudioFormat.CHANNEL_CONFIGURATION_MONO,
AudioFormat.ENCODING_PCM_16BIT, buffersize * 1,
AudioTrack.MODE_STREAM);
m_track.setPlaybackRate(SAMPLE_RATE);
} catch (Throwable t) {
Log.e("Error", "Initializing Audio Record and Play objects Failed "+t.getLocalizedMessage());
}
m_record.startRecording();
Log.i(LOG_TAG,"Audio Recording started");
m_track.play();
Log.i(LOG_TAG,"Audio Playing started");
while (m_isRun) {
m_record.read(buffer, 0, BUF_SIZE);
m_track.write(buffer, 0, buffer.length);
}
Log.i(LOG_TAG, "loopback exit");
}
private void do_loopback() {
m_thread = new Thread(new Runnable() {
public void run() {
loopback();
}
});
可以通過Android的Opensl實現。 但是Android正在努力實現這一目標。
以下是一些可以幫助您的教程
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