Sound transmission method for data way system

Claim 1

For a data way system comprising at least one controller, more than two data input modules and more than two data output modules all of which are connected to one another by a series of data transmission lines substantially making a single loop, as a whole, while linking them together, said each module having its own unique address assigned thereto in advance, said controller being adapted to specify the address of any one of said data input modules to input a data therethrough and to specify the address of any one of said data output modules to transmit said data thereto, at least one of said data input modules including a sound-to-electricity converter such as a microphone, a low-pass filter circuit and an analog-to-digital converting circuit so as to provide d sound input module, and at least one of said data output modules including a digital-to-analog converting circuit and an electricity electricity-to-sound converter so as to provide a sound output module, a method for transmission of data characterized in addressing said sound input module and said sound output module more frequently than said other data input and output modules.