Development Projects



mSemicon has developed a number of custom high specification audio devices for OEM applications.

Digital Audiometer

This is an electronic device (image above) for use with a PC based application, which together form a high performance digital audiometer solution.

Sample characteristics are:

  • Multi-headphone output
  • Dual microphone input
  • USB control
  • Signal-to-noise ratio of over 124dB
  • Sound distortion of 0.1% at dB of 90dB SPL
  • 24-bit
  • Design based on audio DSP

This professional high-spec product was designed without recourse to custom integrated circuits.

Message Minder

The commissioned product shown is a message minder, i.e. a device onto which a message can be left, for replay any time somebody walks by, or whenever it is moved (e.g. as it would be if it were attached to a door).

The product also features an on-board bright LED, which also activates in parallel with the audio stream.

It operates on batteries, or on an external power supply.

The application for this product is intended to be health care (as a reminder to wash hands, for example), or in retail (where short term special offers could be verbally broadcast to shop patrons nearby).