| 摘要 |
A method of processing an audio signal in a communications network, the method comprising: receiving, at a speech buffer, a first portion of the audio signal over the network from a base station of the network, the speech buffer being configured to store and subsequently output the first portion of the audio signal; determining the presence of an interruption to the received audio signal, the interruption being such that a subsequent portion of the audio signal which is intended to be output from the speech buffer immediately following the output of the first portion is not stored in the speech buffer at the time that the subsequent portion is intended to be output from the speech buffer; in the event that the presence of the interruption has been determined, appending a second portion of the audio signal to the first portion in such a way as to form an output audio signal having no signal discontinuities in the time domain, the second portion having a predetermined duration and having a pitch matching that of the first portion over the predetermined duration; applying a fade out envelope to the second portion to gradually reduce the amplitude of the second portion over the predetermined duration; and outputting the output audio signal.
|
