说明：  Java录音程序，Record类完成语音信号采集的任务。它使用javax.sound.sampled包中提供的用于捕获、处理和回放取样音频数据的各种接口和类实现对说话人语音信号的采集。
(Java recording procedures, Record type complete voice signal acquisition task. It uses javax.sound.sampled package provided for the capture, processing and playback of sampled audio data of various types of interface and implementation of people speak voice signal collection.)