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US 9,071,919 B2Granted
Apparatus and method for encoding and decoding spatial parameter
AssigneeSamsung Electronics Co., Ltd.
InventorsHwan Shim, Eun-Mi Oh, Mi-Young Kim, Anton V. Porov
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Abstract
An apparatus and method for encoding and decoding a spatial parameter are provided. A spatial parameter encoding apparatus may encode a spatial parameter using a correlation between spatial parameters indicating a characteristic relationship between channels of a multi-channel audio signal, so that the multi-channel audio signal may be efficiently encoded.
Claims26
A spatial parameter encoding apparatus, comprising:
- a valid range determination unit to determine a valid range of a spatial parameter using a correlation between input spatial parameters indicating a characteristic relationship between channels of a multi-channel audio signal;
- a parameter quantization unit to quantize the spatial parameter based on the valid range;
- and
- a parameter encoding unit to encode the quantized spatial parameter using at least one processor,
- wherein the spatial parameter comprises an Inter-Channel Correlation (ICC) and an Inter-channel Phase Difference (IPD), and
- wherein the correlation indicates a correlation between the ICC and the IPD.
3 more elements
A spatial parameter decoding apparatus, comprising:
- a spatial parameter decoding unit to decode an encoded spatial parameter;
- a valid range determination unit to determine a valid range of a spatial parameter using a correlation between input spatial parameters indicating a characteristic relationship between channels of a multi-channel audio signal;
- and
- a parameter dequantization unit to dequantize the spatial parameter based on the valid range using at least one processor,
- wherein the spatial parameter comprises an Inter-Channel Correlation (ICC) and an Inter-channel Phase Difference (IPD), and
- wherein the correlation indicates a correlation between the ICC and the IPD.
3 more elements
A spatial parameter encoding method, comprising:
- determining a valid range of a spatial parameter using a correlation between spatial parameters indicating a characteristic relationship between channels of a multi-channel audio signal;
- quantizing the spatial parameter based on the valid range;
- and
- encoding the quantized spatial parameter using at least one processor,
- wherein the spatial parameter comprises an Inter-Channel Correlation (ICC) and an Inter-channel Phase Difference (IPD), and
- wherein the correlation indicates a correlation between the ICC and the IPD.
3 more elements
A spatial parameter decoding method, comprising:
- decoding an encoded spatial parameter;
- determining a valid range of a spatial parameter using a correlation between input spatial parameters indicating a characteristic relationship between channels of a multi-channel audio signal;
- and
- dequantizing the spatial parameter based on the valid range using at least one processor,
- wherein the spatial parameter comprises an Inter-Channel Correlation (ICC) and an Inter-channel Phase Difference (IPD), and
- wherein the correlation indicates a correlation between the ICC and the IPD.
3 more elements
Dependencies are inferred from the claim text.