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US 2016/0240207 A1Published application
Method and apparatus for encoding and decoding high frequency for bandwidth extension
AssigneeSamsung Electronics Co., Ltd.
InventorKi-hyun CHOO
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Abstract
Disclosed are a method and apparatus for encoding and decoding a high frequency for bandwidth extension. The method includes: estimating a weight; and generating a high frequency excitation signal by applying the weight between random noise and a decoded low frequency spectrum.
Claims6
1-4. (canceled)
An apparatus for generating an excitation class, the apparatus including:
- a receiving unit configured to receive audio audio from an input device;
- and
- a processor configured to perform:
- first determining, based on a result of signal classification, whether a current frame of the audio corresponds to a speech signal;
- when the current frame does not correspond to the speech signal, second determining, based on a tonal characteristic, whether the current frame corresponds to one of a noisy signal and a tonal signal;
- and
- generating, in response to at least one of the first determining and the second determining, an excitation class for the current frame,
- wherein the second determining is performed by thresholding the tonal characteristic.
5 more elements
Dependencies are inferred from the claim text.