Phonology-Based Algorithm for the Suppression of Noise-Bursts in Speech
Original Publication Date: 1985-Jan-01
Included in the Prior Art Database: 2005-Feb-18
Speech communications are often subject to noise. One major type of such noise is a short-lived (less than 10 msec), loud transient burst variously called click, static, or burst. This noise is distracting, uncomfortable and hampers speech intelligibility. There is no general a priori method for reducing noise and leaving the signal intact if we know nothing about signal or noise. In the case of speech, however, we know a great deal about the signal and we can use this knowledge to reduce noise while leaving the signal intact. The artifactual clicks mentioned above have a very rapid onset and offset and can be filtered out by any of several simple digital filtering mechanisms.