| 摘要 |
A method and apparatus, performed by a communication unit (101), for substantially eliminating undesired noise in an audible output signal (113) while a determined quality measure (114) of a received signal (107) is below a predetermined threshold (201). At least a portion of the received signal (107) is stored for a predetermined period of time to produce a stored signal (109). A measure of pitch period (111) of the stored signal (109) is determined. When the determined quality measure (114) of the received signal (107) drops below the predetermined threshold (201), at least a portion of the stored signal (109) is used, responsive to the detrmined measure of the pitch period (111), to produce the audible output signal (113). When the determined quality measure (114) of the received signal (107) rises above the predetermined threshold (201), the received signal (107) is used to produce the audible output signal (113). |
