Controlling a time-scaling of an audio signal

摘要

For controlling a time-scaling of an audio signal, the audio signal being distributed to a sequence of frames that are received via a packet switched network, a change in a delay of received frames is detected. Moreover, an amount of time scaling that is to be applied to received frames for compensating for the detected change is determined. Further, a kind of the change is determined. Further, a length of a time window within which a time scaling of the determined amount is to be completed is determined depending on the determined kind of the change.

主权项

1. A method comprising:
detecting at an apparatus a change in a delay of frames that are received via a packet switched network, the frames belonging to a sequence of frames to which an audio signal is distributed; determining an amount of time scaling that is required to be applied to received frames for compensating for said detected change; determining a kind of said change by evaluating at least a change in the amount of delayed frames; and determining a length of a time window within which a time scaling of said required amount is to be completed depending on said determined kind of said change.