Dynamic muting method for ADPCM coded speech

A method of selectively attenuating bad frames within an information signal containing good frames and bad frames such method comprising the steps of:

• receiving a frame containing a bad frame status indication message;
• integrating an incidence of bad frames over a time period;
• comparing the integrated value with a threshold;
• and, heavily attenuating bad frames when the integrated value does not exceed the threshold and lightly attenuating the bad frames when the integrated value exceeds the threshold.

An apparatus for selectively attenuating bad frames within an information signal containing good frames and bad frames such apparatus comprising:

• means for receiving a frame containing a bad frame status indication message;
• means for integrating an incidence of bad frames over a time period;
• means for comparing the integrated value with a threshold;
• and, means for heavily attenuating a bad frame when the integrated value does not exceed the threshold and lightly attenuating the bad frame when the integrated value exceeds the threshold.

In a digital radio frequency receiver, a method of attenuating erroneous frames within an information signal containing good and erroneous frames, such method including the steps of:

• receiving a frame containing voice data and a status information, indicating an erroneous frame;
• integrating the incidence of erroneous frames, producing an integrated value;
• comparing the integrated value with a threshold;
• and heavily attenuating erroneous frames when the integrated value does not exceed the threshold and lightly attenuating erroneous frames when the integrated value exceeds the threshold.

In a digital radio frequency receiver, an apparatus for attenuating erroneous frames within an information signal containing good and erroneous frames, such apparatus comprising:

• means for receiving a frame containing voice data and a status information, indicating an erroneous frame;
• integrating the incidence of erroneous frames, means for producing an integrated value;
• means for comparing the integrated value with a threshold;
• and means for heavily attenuating erroneous frames when the integrated value does not exceed the threshold and lightly attenuating erroneous frames when the integrated value exceeds the threshold.