APPARATUS AND METHOD FOR CODING A PORTION OF AN AUDIO SIGNAL USING A TRANSIENT DETECTION AND A QUALITY RESULT.

摘要

An apparatus for coding a portion of an audio signal (10) to obtain an encoded audio signal (26) for the portion of the audio signal comprises a transient detector (12) for detecting whether a transient signal is located in the portion of the audio signal to obtain a transient detection result (14), an encoder stage (16) for performing a first encoding algorithm on the audio signal, the first encoding algorithm having a first characteristic, and for performing a second encoding algorithm on the audio signal, the second encoding algorithm having a second characteristic being different from the first characteristic, a processor (18) for determining which encoding algorithm results in an encoded audio signal being a better approximation to the portion of the audio signal with respect to the other encoding algorithm to obtain a quality result (20), and a controller (22) for determining whether the encoded audio signal for the portion of the audio signal is to be generated by either the first encoding algorithm or the second encoding algorithm based on the transient detection result (14) and the quality result (20).