Voice Recording is a common digital products. the requirement of manufacturing technique is high. There're many kinds of voice recorder and video recorder on market, which sold under a wide range of trade names .the quality is rather spotty. A qualified voice recorder requires stable quality of recording and make sure the service life is up to three years under normal use.

As the improvement of science and technology, machine is able to performs some work which normally done by humans. The machine has advantages than human on speed and precision. The products is becoming smaller and the manufacturing technique will require more and more refinement. Especially for the integration of electronic components, one component can support several functions, the power consumption is lower. At the same time it requires higher manufacturing technique, otherwise, it will cause quality problem.

The Optimization and upgrading of manufacturing technique make the size of voice recorder smaller and with more functions. With the development of technology, the voice recorder will become smarter, and life will become easier.