Question

        //constructor
            android.os.Process.setThreadPriority(android.os.Process.THREAD_PRIORITY_URGENT_AUDIO);
        /////////////

        //thread run() method
            int N = AudioRecord.getMinBufferSize(8000,AudioFormat.CHANNEL_IN_MONO,AudioFormat.ENCODING_PCM_16BIT);
            AudioRecord recorder = new AudioRecord(AudioSource.MIC, 8000, AudioFormat.CHANNEL_IN_MONO, AudioFormat.ENCODING_PCM_16BIT, N*10);
                        recorder.startRecording();

    while(!stopped)
                { 
                try {
                           //if not paused upload audio
                   if (uploadAudio == true) {

                           short[][] buffers  = new short[256][160];
                           int ix = 0;

                            //allocate buffer for audio data
                            short[] buffer = buffers[ix++ % buffers.length];

                               //write audio data to track
                           N = recorder.read(buffer,0,buffer.length);

                           //create bytes big enough to hold audio data
                           byte[] bytes2 = new byte[buffer.length * 2];

                                   //convert audio data from short[][] to byte[]

ByteBuffer.wrap(bytes2).order(ByteOrder.LITTLE_ENDIAN).asShortBuffer().put(buffer);


                        //encode audio data for ulaw
                                read(bytes2, 0, bytes2.length);

有关ulaw编码器代码，请参阅here。我使用read，maxAbsPcm和编码方法

                                //send audio data
                                //os.write(bytes2,0,bytes2.length);
                            }
                        } finally {
                    }
                }
                os.close();
            }
            catch(Throwable x)
            { 
                Log.w("AudioWorker", "Error reading voice AudioWorker", x);
            }
            finally
            { 
                recorder.stop();
                recorder.release();
            }

        ///////////

所以这个工作正常。音频以适当的格式发送到服务器，并在另一端播放。然而，音频经常跳过。例如：说1,2,3,4将以4切断回放我认为这是一个性能问题，因为我已经计时了一些这些方法，当它们花费0秒或更短的时间时，一切都有效，但它们通常需要几秒钟。随着字节和编码的转换占用最多知道如何优化此代码以获得更好的性能吗？或者也许是一种处理滞后的方法（可能构建缓存）？

Android录音机性能不佳

0 个答案: