Abstract:
Audio signals are susceptible to pulse noise in many cases such as electromagnetic
interference in mobile systems, poor synchronization in digital recording or even scratch noise
of an old LP record to name a few. A number of software packages for noise cancellation have
been developed but they are expensive and use complex algorithms. This paper presents an
adaptive method for suppressing pulse noise specifically from voice signals. Pulses are
removed by selectively applying median filtering to contaminated signal regions only, avoiding
high frequency losses in the undamaged sections.
