Method for reducing the effect of impulse noise in a motor vehicle radio
AssigneeGM Global Technology Operations LLC
InventorVipul M. Patel
Life of this patent
Estimating the term…
Abstract
Methods are provided for reducing impulse noise effects in a motor vehicle radio. One method includes the steps of first detecting impulse noise received by the motor vehicle radio. The received impulse noise is classified as either short pulse width impulse noise or as long pulse width impulse noise. The short pulse width impulse noise can generally be blanked without seriously affecting the audio quality of the radio. For the long pulse width impulse noise, a maximum long pulse width blanking repetition rate is set and such impulse noise pulses are blanked at a blanking rate less than the maximum long pulse width blanking repetition rate.
Claims7
A method for reducing impulse noise in a motor vehicle radio comprising the steps of:
- detecting impulse noise received by the motor vehicle radio;
- classifying the detected impulse noise as either short pulse width impulse noise or as long pulse width impulse noise;
- blanking impulse noise classified as short pulse width impulse noise;
- and
- blanking impulse noise classified as long pulse width impulse noise providing a predetermined time has elapsed since a previous blanking of long impulse width impulse noise;
- wherein the step of blanking impulse noise classified as short pulse width impulse noise comprises the step of blanking for a time commensurate with the length of the short pulse width.
A method for reducing impulse noise in a motor vehicle radio comprising the steps of:
- detecting impulse noise received by the motor vehicle radio;
- classifying the detected impulse noise as either short pulse width impulse noise or as long pulse width impulse noise;
- blanking impulse noise classified as short pulse width impulse noise;
- upon detection of impulse noise classified as long pulse width impulse noise:
- blanking a first long pulse width impulse noise pulse;
- initiating a timer;
- blanking a subsequent long pulse width impulse noise pulse only if the timer has exceeded a predetermined time;
- and
- resetting the timer upon each subsequent blanking of a long pulse width impulse noise pulse.
Dependencies are inferred from the claim text.