实现语音波形的显示、波形放大及缩小（双击鼠标实现），声音回放，被选定波形区域的存储-achieve voice waveform display, waveform magnification and reduced (to achieve double-click the mouse), the voice playback, selected regional waveform storage

实现语音波形的显示、波形放大及缩小（双击鼠标实现），声音回放，被选定波形区域的存储-achieve voice waveform display, waveform magnification and reduced (to achieve double-click the mouse), the voice playback, selected regional waveform storage