Development of iPhone Based Binaural Recorder for Sound Quality Analysis

The binaural recording and playback are widely used tools for sound quality analysis for consumer products and transportation vehicles. The shortcoming of traditional systems are expensive and difficult to use. The iPhone based binaural recorder was developed in this paper. The system included a binaural microphone, soundcard and APP. The system was tested in an anechoic chamber for accuracy of source positioning. The measurement accuracy was investigated by comparing with a dummy head system. The whole system can be calculated for the most of sound quality analysis. The other applications of the system, such as virtual reality recording and 3D music is also explored. The advantages of the iPhone based binaural recorder are data sharing, cloud data base, low costs and simple to use.