System and method for improving message delivery in voice systems utilizing microphone and target signal-to-noise ratio

A method for delivering a message to a recipient in an environment with ambient noise, the method comprising:

• delivering the message;
• recording audio at or near the recipient;
• analyzing the recorded audio to obtain an actual Signal-to-Noise Ratio SNRactual;
• providing a predetermined minimum Signal-to-Noise Ratio SNRmin;
• and
• repeating the message if the actual SNRactual falls below the SNRmin, otherwise waiting to deliver a next message.

A system for delivering a message to a recipient in an environment with ambient noise, the system comprising:

• a recording unit for recording the ambient noise in the environment at a certain time interval;
• an analyzing unit for analyzing the recorded ambient noise to obtain an average power Pnoise or RMS amplitude Anoise of the ambient noise;
• means for providing a predetermined desired Signal-to-Noise Ratio SNRdesired;
• a calculating unit for calculating an average signal power Psignal or RMS amplitude Asignal of the message to be delivered based on the Pnoise or Anoise and the desired SNRdesired;
• and
• an adjusting unit for adjusting a volume of the message to be delivered according to the Psignal or Asignal.

A system for delivering a message to a recipient in an environment with ambient noise, the system comprising:

• a delivering unit for delivering the message;
• a recording unit for recording audio at or near the recipient when the message is delivered;
• an analyzing unit for analyzing the recorded audio to obtain an actual SNRactual;
• means for providing a predetermined minimum Signal-to-Noise Ratio SNRmin;
• a comparing unit for comparing the actual SNRactual with the SNRmin;
• and
• means for repeating the message if the actual SNRactual falls below the SNRmin.