Processing audio data
First Claim
Patent Images
1. A method of processing audio data, said method comprising:
- characterizing, using a processor, an audio data representative of a recorded sound scene into a set of sound sources occupying positions within a time and space reference frame;
analyzing said set of sound sources of the audio data;
selecting a subset of sound sources from the set of sound sources of the audio data based on a result of the analysis;
determining at least one virtual microphone trajectory using the selected subset of sound sources; and
generating a modified audio data representing sound captured from at least one virtual microphone configured for moving about said recorded sound scene, wherein said virtual microphone is controlled in accordance with the at least one virtual microphone trajectory and the selected subset of sound sources, to conduct a virtual tour of said recorded sound scene.
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Abstract
An exemplary embodiment is a method of processing audio data comprising: characterising an audio data representative of a recorded sound scene into a set of sound sources occupying positions within a time and space reference frame; analysing the sound sources; and generating a modified audio data representing sound captured from at least one virtual microphone configured for moving about the recorded sound scene, wherein the virtual microphone is controlled in accordance with a result of the analysis of said audio data, to conduct a virtual tour of the recorded sound scene.
82 Citations
68 Claims
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1. A method of processing audio data, said method comprising:
- characterizing, using a processor, an audio data representative of a recorded sound scene into a set of sound sources occupying positions within a time and space reference frame;
analyzing said set of sound sources of the audio data;
selecting a subset of sound sources from the set of sound sources of the audio data based on a result of the analysis;
determining at least one virtual microphone trajectory using the selected subset of sound sources; and
generating a modified audio data representing sound captured from at least one virtual microphone configured for moving about said recorded sound scene, wherein said virtual microphone is controlled in accordance with the at least one virtual microphone trajectory and the selected subset of sound sources, to conduct a virtual tour of said recorded sound scene. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
- characterizing, using a processor, an audio data representative of a recorded sound scene into a set of sound sources occupying positions within a time and space reference frame;
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35. A method of processing audio data representative of a recorded sound scene, said audio data comprising a set of sound sources each referenced within a spatial reference frame, said method comprising:
- identifying, using a processor, characteristic sounds associated with each of said sound sources of the audio data;
selecting individual sound sources according to their from the identified characteristic sounds;
determining at least one virtual microphone trajectory using the selected individual sound sources;
navigating said sound scene to sample said selected individual sound sources based on the virtual microphone trajectory; and
generating a modified audio data comprising said sampled sounds originating from said selected sound sources. - View Dependent Claims (36, 37)
- identifying, using a processor, characteristic sounds associated with each of said sound sources of the audio data;
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38. A method of processing audio data, the method comprising:
- resolving, using a processor, an audio signal into a plurality of constituent sound elements, wherein each of said sound elements is referenced to a spatial reference flame;
defining an observation position within said spatial reference frame;
selecting a set of sound elements from said constituent sound elements in accordance, with the observation position;
determining at least one virtual microphone trajectory using the selected set of sound elements; and
generating from said selected sound elements and the at least one virtual microphone trajectory, an edited version of the audio signal representative of sounds experienced by a virtual observer at said observer position within said spatial reference frame. - View Dependent Claims (39, 40)
- resolving, using a processor, an audio signal into a plurality of constituent sound elements, wherein each of said sound elements is referenced to a spatial reference flame;
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41. A method of processing audio data, said method comprising:
- resolving, using a processor, an audio signal into constituent sound elements, wherein each of said constituent sound elements comprises (a) a characteristic sound quality, and (b) a position within a spatial reference frame;
selecting a set of sound elements from the constituent sound elements;
defining a virtual microphone trajectory through said spatial reference frame using the selected set of sound elements; and
generating from the selected set of sound elements and the defined virtual microphone trajectory, an output audio signal which varies in time.
- resolving, using a processor, an audio signal into constituent sound elements, wherein each of said constituent sound elements comprises (a) a characteristic sound quality, and (b) a position within a spatial reference frame;
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42. A method of processing audio data, said method comprising:
- acquiring a set of audio data representative of a recorded sound scene;
characterizing, using a processor, said audio data into a set of sound sources occupying positions within a time and space reference frame;
identifying characteristic sounds with said of the sound sources;
selecting a subset of sound sources from the set of sound sources based on the identified characteristic sounds of the sound sources;
determining at least one virtual microphone trajectory using the selected subset of sound sources; and
generating a modified audio data representing sound captured from at least one virtual microphone configured for moving around said recorded sound scene, wherein said virtual microphone is controlled in accordance with associated with said the at least one virtual microphone trajectory and the selected subset of the sound sources, to conduct a virtual tour of said recorded sound scene.
- acquiring a set of audio data representative of a recorded sound scene;
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43. A computer system comprising an audio data processing means, a data input port and an audio data output port, said audio data processing means being arranged to:
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receive from said data input port, a set of audio data representative of a recorded sound scene, said audio data characterised into a set of sound sources positioned within a time-space reference frame; perform an analysis of said audio data to identify characteristic sounds of the said sound sources; select a subset of sound sources from the set of sound sources based on the identified characteristic sounds of the sound sources; determine at least one virtual microphone trajectory using the selected subset of sound sources; generate a set of modified audio data, said modified audio data representing sound captured from at least one virtual microphone configurable to move about said recorded sound scene; and output said modified audio data to said data output port, wherein said virtual microphone is generated in accordance with, and is controlled by the at least one virtual microphone trajectory and the selected subset of the sound sources. - View Dependent Claims (44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59)
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60. A non-transitory computer readable medium upon which a computer program is stored, said computer program comprising:
- acquiring a set of audio data representative of a recorded sound scene, said audio data characterized into a set of sound sources within a time-space reference frame;
using an audio data processing means to perform an analysis of said audio data to identify characteristic sounds of the sound sources;
selecting a subset of sound sources from the set of sound sources based on the identified characteristic sounds of the sound sources;
determining at least one virtual microphone trajectory using the selected subset of sound sources; and
generating, in said audio data processing means, a set of modified audio data for output to an audio player, said modified audio data representing sound captured from at least one virtual microphone configurable to move about said recorded sound scene, wherein said virtual microphone is generated in accordance with, and thereby controlled by, said the at least one virtual microphone trajectory and the selected subset of the sound sources.
- acquiring a set of audio data representative of a recorded sound scene, said audio data characterized into a set of sound sources within a time-space reference frame;
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61. Audio data processing apparatus for processing data representative of a recorded sound scene, said audio data comprising a set of sound sources each referenced within a spatial reference frame, said apparatus comprising:
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means for identifying characteristic sounds associated with each of said sound sources; means for selecting individual sound sources from the identified characteristic sounds; means for determining at least one virtual microphone trajectory using the selected individual sound sources; means for navigating said sound scene to sample said selected individual sound sources based on the at least one virtual microphone trajectory; and means for generating a modified audio data comprising said sampled sounds. - View Dependent Claims (62, 63)
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64. Audio data processing apparatus comprising:
- a memory, said memory storing code for a sound source characterization component for characterizing an audio data into a set of sound sources occupying positions within a time and space reference frame;
a sound analyzer for performing an analysis of said audio data to identify characteristic sounds of the sound sources;
a sound selecting component for selecting a subset of sound sources from the set of sound sources of the audio data based on the identified characteristic sounds of the sound sources;
a trajectory determining component for determining at least one virtual microphone trajectory using the selected subset of sound sources;
at least one virtual microphone component, configurable to move about said recorded sound scene; and
a modified audio generator component for generating a set of modified audio data representing sound captured from said virtual microphone component;
a processor, wherein the processor is configured to control movement of said virtual microphone component in said sound scene associated with said the at least one virtual microphone trajectory and the selected subset of sound sources. - View Dependent Claims (65)
- a memory, said memory storing code for a sound source characterization component for characterizing an audio data into a set of sound sources occupying positions within a time and space reference frame;
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66. A method of processing an audio visual data representing a recorded audio-visual scene, said method comprising:
- characterizing, using a processor, said audio data into a set of sound sources, occupying positions within a time and space reference frame;
analyzing said audio-visual data to obtain visual cues;
selecting a subset of sound sources from the set of sound sources based on the visual cues;
determining at least one virtual microphone trajectory using the selected subset of sound sources; and
generating a modified audio data representing sound captured from at least one virtual microphone configured for moving around said recorded audio-visual scene, wherein said virtual microphone is controlled in accordance with the at least one virtual microphone trajectory and the selected subset of sound sources to conduct a virtual tour of said recorded audio-visual scene.
- characterizing, using a processor, said audio data into a set of sound sources, occupying positions within a time and space reference frame;
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67. An audio-visual data processing apparatus for processing an audio-visual data representing a recorded audio-visual data representing a recorded audio visual scene, said apparatus comprising:
- a memory, said memory storing code for a sound source characterizer for characterizing audio data into a set of sound sources occupying positions within a time and space reference frame;
an analysis component for analyzing said audio-visual to obtain visual cues;
a sound selecting component for selecting a subset of sound sources from the set of sound sources of the audio data based on the visual cues;
a trajectory determining component for determining at least one virtual microphone trajectory using the selected subset of sound sources;
at least one virtual microphone component, configurable to navigate said audio-visual scene; and
an audio generator component for generating a set of modified audio data representing sound captured from said virtual microphone component;
a processor, wherein the processor is configured to control navigation of said virtual microphone component in said audio-visual scene in accordance with said visual the at least one virtual microphone trajectory and the selected subset of sound sources. - View Dependent Claims (68)
- a memory, said memory storing code for a sound source characterizer for characterizing audio data into a set of sound sources occupying positions within a time and space reference frame;
Specification