Patent ID: 9741351
Date: 2017-08-22
CPC Classifications: G10L

Claim:
1. A method, including the steps of: (a) decoding an encoded audio signal indicative of encoded audio content to generate a decoded audio signal indicative of a decoded version of the audio content; and (b) performing adaptive quantization noise filtering on the decoded audio signal in response to data indicative of signal to noise values, where the signal to noise values are indicative of a post-quantization, signal-to-quantization noise ratio for each frequency band of at least one segment of the encoded audio content, wherein adaptive quantization noise filtering is or includes generation of a quantization noise filtered signal indicative of a sequence of adaptively quantization noise filtered values for each said segment, where the sequence of adaptively quantization noise filtered values is an adaptively varied linear combination of non-filtered frequency components of the decoded audio signal and non-adaptively post-filtered frequency components of the decoded audio signal.