Voice Control

Offline solution in 30 languages

In the context of the HMI 5.0 project, which describes multi-sensory and multi-modal communication between humans and machines, the audio channel plays an important role. While the output of signals and sounds is also supplemented by synthetic speech, voice control for input is also taking its place in professional applications. With it, devices can be operated comfortably without hands, without looking at the device.

Offline voice control does not require a connection to the Internet during operation. As a result, data remains private and secure. Data does not have to be stored on an external server, nor does broadband permanent access to the Internet have to be provided.


  • 30 available languages
  • Long-term availability
  • Function without internet connection at runtime
  • Privacy by design and data security
  • High reliability and availability
  • Simplest voice dialog creation
  • Wake word function with free choice of wake word

Technical requirements

  • Runs on ARMv7 and higher and X86
  • Runtime: approx. 6 MByte
  • Language model: approx. 6 MByte per language
  • Application specific language resources:
    • approx. 10 kByte simple command control with 10 words
    • approx. 500 kByte extensive control with 1000 words
  • Main memory: from 16 MByte (depending on application)
  • Computing requirements: from 400 MIPS for real-time processing
  • Can run on system processor




  • Web tool for text input
  • Up to 30 languages, several applicable at the same time
  • Freely programmable activation word
  • After conversion of phonemes to server: Download and offline operation
  • Communication with own hardware via MQTT protocol

Development kit vicControl Industrial

  • Display 7", WVGA
  • SDK for embedded ARMv7 compatible platforms
  • Convenient API for using speech input and output via MQTT
  • vicSDC speech dialog designer with examples for the development of a customized speech control system
  • Industry proven quality in 30 languages
  • Wake-up word function
  • Semantic evaluation of recognized speech commands
  • Two included demo applications
  • Software "vicControl industrial

Voice control applications

Operation and monitoring of medical technology

  • Controlling beds and examination couches for CT/MRI via speech (e.g. raising and lowering, sitting and lying position)
  • Information retrieval from a database (e.g. during an operation)
  • Documentation of activities in nursing and geriatric care or rehabilitation
  • Touch-free operation of devices in poorly accessible or sterile environments




  • Natural collaboration with robots and in augmented reality applications.
  • Control of machines and devices
  • Industrial automation, test and measurement technology
  • Touch-free operation of devices in poorly accessible or explosive environments


Smart Home


  • Intelligent home automation: lighting, heating, air conditioning, shutters, plumbing.
  • Interaction with consumer electronics: TV, multimedia, AV receiver
  • Electronic media: smartphone, tablet, PC, e-book reader
  • Household and kitchen appliances


Digital Signage


  • Information kiosks in shopping centers or service points
  • Ordering machines in fast food restaurants
  • Ticket vending machines, e.g. DB "SEMMI

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