Method and apparatus for processing audio signals using motion of a sound source, reverberation property, or semantic object
First Claim
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1. A method of encoding an audio signal, the method comprising:
- receiving an audio signal comprising information about a moving sound source;
receiving position information about the moving sound source;
generating dynamic track information indicating motion of the moving sound source by using the position information; and
encoding the audio signal and the dynamic track information,wherein the dynamic track information comprises control points which express a dynamic track of the moving sound source and the number of frames to which the dynamic track expressed by the control points is applied.
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Abstract
Methods and apparatuses for encoding and decoding an audio signal are provided, a method of encoding an audio signal including: receiving the audio signal including information about a moving sound source; receiving position information about the moving sound source; generating dynamic track information indicating motion of the moving sound source by using the position information; and encoding the audio signal and the dynamic track information.
76 Citations
101 Claims
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1. A method of encoding an audio signal, the method comprising:
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receiving an audio signal comprising information about a moving sound source; receiving position information about the moving sound source; generating dynamic track information indicating motion of the moving sound source by using the position information; and encoding the audio signal and the dynamic track information, wherein the dynamic track information comprises control points which express a dynamic track of the moving sound source and the number of frames to which the dynamic track expressed by the control points is applied. - View Dependent Claims (2, 3, 4, 93)
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5. A method of decoding an audio signal, the method comprising:
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receiving a signal comprising an encoded audio signal and encoded dynamic track information, the audio signal comprising information about a moving sound source and the dynamic track information indicating motion of a position of the moving sound source; and decoding the encoded audio signal and the encoded dynamic track information from the received signal, wherein the dynamic track information comprises control points which express a dynamic track of the moving sound source and the number of frames to which the dynamic track expressed by the control points is applied. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 94)
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13. A method of encoding an audio signal, the method comprising:
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receiving a reverberation property of an audio signal separately from receiving the audio signal, the reverberation property being initially separately recorded from the audio signal; obtaining the audio signal based on the reverberation property; and encoding, by an encoder comprising a processor, the obtained audio signal and the reverberation property. - View Dependent Claims (14, 15, 16, 95)
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17. A method of decoding an audio signal, the method comprising:
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receiving a signal comprising an encoded first reverberation property and an encoded audio signal comprising the first reverberation property, the encoded first reverberation property being initially separately recorded from the encoded audio signal; decoding, by a decoder comprising a processor, the encoded audio signal from the received signal; and generating the decoded audio signal based on the encoded audio signal and the first reverberation property. - View Dependent Claims (18, 19, 20, 21, 96)
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22. A method of encoding an audio signal, the method comprising:
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receiving an audio signal recorded in a predetermined space; receiving a reverberation property of the predetermined space, the reverberation property being initially separately recorded from the audio signal; calculating a reversed function of the reverberation property; obtaining an audio signal from which the reverberation property is removed by applying the reversed function to the received audio signal; and encoding the reverberation property and the audio signal from which the reverberation property is removed. - View Dependent Claims (97)
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23. A method of decoding an audio signal, the method comprising:
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receiving a signal comprising an encoded audio signal and an encoded reverberation property, the encoded audio signal being initially separately recorded from the encoded reverberation property; decoding the encoded audio signal from the received signal; decoding the encoded reverberation property from the received signal; and obtaining an audio signal comprising the reverberation property by applying the decoded reverberation property to the decoded audio signal. - View Dependent Claims (98)
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24. A method of decoding an audio signal, the method comprising:
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receiving a signal comprising an encoded audio signal and an encoded first reverberation property, the encoded audio signal being initially separately recorded from the encoded first reverberation property; decoding the encoded audio signal from the received signal; receiving a second reverberation property; generating an audio signal comprising the second reverberation property by applying the received second reverberation property to the decoded audio signal, and generating another audio signal comprising the first reverberation property by applying the received first reverberation property to the decoded audio signal. - View Dependent Claims (99)
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25. A method of encoding an audio signal, the method comprising:
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receiving, for each of a plurality of semantic objects of the audio signal, at least one parameter indicating at least one property of the semantic object of the audio signal; and encoding, for each of the plurality of the semantic objects of the audio signal, by an encoder comprising a processor, the at least one parameter, wherein, for each of the plurality of the semantic objects of the audio signal, the at least one parameter comprises a physical model comprising a transfer function to express a repeated creation and/or extinction of a sound source and indicates a physical property of thea sound source corresponding to the semantic object. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 100)
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34. A method of decoding an audio signal, the method comprising:
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receiving, for each of a plurality of semantic objects of the audio signal, an input signal comprising at least one encoded parameter indicating at least one property of the semantic object of the audio signal; and decoding, for each of the plurality of the semantic objects of the audio signal, by a decoder comprising a processor, the at least one encoded parameter from the input signal, wherein, for each of the plurality of the semantic objects of the audio signal, the at least one encoded parameter comprises a physical model comprising a transfer function to express a repeated creation and/or extinction of a sound source and indicates a physical property of the sound source corresponding to the semantic object. - View Dependent Claims (35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 101)
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48. An apparatus for encoding an audio signal, the apparatus comprising:
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a processor; a receiver which receives an audio signal comprising information about a moving sound source and position information about the moving sound source; a dynamic track information generator which generates dynamic track information indicating motion of the moving sound source by using the position information; and an encoder which uses the processor which encodes the audio signal and the dynamic track information, wherein the dynamic track information comprises control points which express a dynamic track of the moving sound source and the number of frames to which the dynamic track expressed by the control points is applied. - View Dependent Claims (49, 50)
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51. An apparatus for decoding an audio signal, the apparatus comprising:
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a processor; a receiver which receives a signal comprising an encoded audio signal and encoded dynamic track information, the audio signal comprising information about a moving sound source and the dynamic track information indicating motion of a position of the moving sound source; and a decoder which uses the processor which decodes the audio signal and the dynamic track information from the received signal, wherein the dynamic track information comprises control points which express a dynamic track of the moving sound source and the number of frames to which the dynamic track expressed by the control points is applied. - View Dependent Claims (52, 53, 54, 55, 56, 57)
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58. An apparatus for encoding an audio signal, the apparatus comprising:
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a processor; a receiver which separately receives an audio signal and a reverberation property of the audio signal, the reverberation property being initially separately recorded from the audio signal; an obtainer which obtains the audio signal based on the reverberation property; and an encoder which uses the processor which encodes the obtained audio signal and the reverberation property. - View Dependent Claims (59, 60, 61)
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62. An apparatus for decoding an audio signal, the apparatus comprising:
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a processor; a receiver which receives a signal comprising an encoded first reverberation property and an encoded audio signal comprising the first reverberation property, the encoded first reverberation property being initially separately recorded from the encoded audio signal; a decoder which uses the processor which decodes the audio signal from the received signal; and a generator which generates the decoded audio signal based on the encoded audio signal and the first reverberation property. - View Dependent Claims (63, 64, 65, 66)
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67. An apparatus for encoding an audio signal, the apparatus comprising:
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a processor; a receiver which receives an audio signal recorded in a predetermined space, and a reverberation property of the predetermined space, the reverberation property being initially separately recorded from the audio signal; a reverberation remover which calculates a reversed function of the reverberation property, and obtains an audio signal from which the reverberation property is removed by applying the reversed function to the received audio signal; and an encoder which uses the processor which encodes the reverberation property and the audio signal from which the reverberation property is removed.
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68. An apparatus for decoding an audio signal, the apparatus comprising:
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a processor; a receiver which receives a signal comprising an encoded audio signal and an encoded reverberation property, the encoded audio signal being initially separately recorded from the encoded audio signal; a decoder which uses the processor which decodes the audio signal and the reverberation property from the received signal; and a reverberation restorer which obtains an audio signal comprising the reverberation property by applying the decoded reverberation property to the decoded audio signal.
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69. An apparatus for decoding an audio signal, the apparatus comprising:
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a processor; a receiver which receives a second reverberation property and a signal comprising an encoded audio signal and an encoded first reverberation property, the encoded audio signal being initially separately recorded from the encoded first reverberation property; a decoder which uses the processor which decodes the audio signal from the received signal; and a reverberation applier which generates an audio signal comprising the second reverberation property by applying the second reverberation property to the audio signal and generates another audio signal comprising the first reverberation property by applying the first reverberation property to the audio signal.
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70. An apparatus for encoding an audio signal, the apparatus comprising:
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a processor; a receiver which, for each of a plurality of semantic objects of an audio signal, receives at least one parameter indicating at least one property of a semantic object of the audio signal; and an encoder which uses the processor which, for each of the plurality of semantic objects of the audio signal, encodes the at least one parameter, wherein, for each of the plurality of semantic objects of the audio signal, the at least one parameter comprises a physical model comprising a transfer function to express a repeated creation and/or extinction of a sound source and indicates a physical property of the sound source corresponding to the semantic object. - View Dependent Claims (71, 72, 73, 74, 75, 76, 77, 78)
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79. An apparatus for decoding an audio signal, the apparatus comprising:
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a processor; a receiver which, for each of a plurality of semantic objects of the audio signal, receives an input signal comprising at least one encoded parameter indicating at least one property of the semantic object of the audio signal; and a decoder which uses the processor which, for each of the plurality of the semantic objects of the audio signal, decodes the at least one encoded parameter from the input signal, wherein, for each of the plurality of the semantic objects of the audio signal, the at least one encoded parameter comprises a physical model comprising a transfer function to express a repeated creation and/or extinction of a sound source and which indicates a physical property of the sound source corresponding to the semantic object. - View Dependent Claims (80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92)
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Specification