CONCEPT FOR CODING MODE SWITCHING COMPENSATION
First Claim
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1. Decoder supporting, and being switchable between, at least two modes so as to decode an information signal, wherein the decoder is configured to, responsive to a switching instance, perform temporal smoothing and/or blending at a transition between a first temporal portion of the information signal, preceding the switching instance, and a second temporal portion of the information signal, succeeding the switching instance, in a manner confined to a high-frequency spectral band.
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Abstract
A codec allowing for switching between different coding modes is improved by, responsive to a switching instance, performing temporal smoothing and/or blending at a respective transition.
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Citations
22 Claims
- 1. Decoder supporting, and being switchable between, at least two modes so as to decode an information signal, wherein the decoder is configured to, responsive to a switching instance, perform temporal smoothing and/or blending at a transition between a first temporal portion of the information signal, preceding the switching instance, and a second temporal portion of the information signal, succeeding the switching instance, in a manner confined to a high-frequency spectral band.
- 15. Method for decoding supporting, and being switchable between, at least two modes so as to decode an information signal, wherein the method comprises, responsive to a switching instance, performing temporal smoothing and/or blending at a transition between a first temporal portion of the information signal, preceding the switching instance, and a second temporal portion of the information signal, succeeding the switching instance, in a manner confined to a high-frequency spectral band.
- 16. An encoder supporting, and being switchable between, at least two modes of different signal-energy-conservation property in a high-frequency spectral band, so as to encode an information signal, wherein the encoder is configured to, responsive to a switching instance, process the information signal by temporally smoothing and/or blending the information signal at a transition between a first temporal portion of the information signal, preceding the switching instance, and a second temporal portion of the information signal, succeeding the switching instance, in a manner confined to a high-frequency spectral band to obtain a pre-processed version of the information signal, and encode the pre-processed version of the information signal.
- 18. A method for encoder supporting, and being switchable between, at least two modes of different signal-energy-conservation property in a high-frequency spectral band, so as to encode an information signal, wherein the method comprises, responsive to a switching instance, processing by temporally smoothing the information signal and/or blending at a transition between a first temporal portion of the information signal, preceding the switching instance, and a second temporal portion of the information signal, succeeding the switching instance, in a manner confined to a high-frequency spectral band to obtain a pre-processed version of the information signal, and encoding the pre-processed version of the information signal.
Specification