Technical introduction

TwinCAT Speech uses the sound cards of the Windows operating system for speech input and output. These are typically connected via USB. Other sound cards can also be used as long as Windows recognizes them as sound devices.

With the configuration project, TwinCAT Speech represents a dedicated project system in the engineering in order to enable the selection of sound cards and languages as well as further connections to the TwinCAT HMI or TwinCAT EventLogger. The configuration is loaded to the corresponding target system by activation and is available for use from the next start of TwinCAT.

A TwinCAT HMI client can be used as a virtual sound card. This client can run on the same or another computers or indeed a mobile device, for example. All you need is an HTML5-compatible browser. However, an HMI user interface can also be directly voice-operated.

The following graphic illustrates the architecture of TwinCAT Speech: