Apparatus and method for audio analysis
An audio and audio source technology, applied in the field of audio analysis, to solve problems such as inability to provide data, difficulty in information, and suboptimal algorithms
Pending Publication Date: 2022-02-01
斯蒂尔赛瑞斯法国公司
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Problems solved by technology
However, it is particularly difficult to obtain such information from audio signals where different sound elements and audio sources are combined into a single signal / channel set
Many algorithms have been proposed to derive suitable information, but these algorithms are often suboptimal and do not provide as much data or as accurate data as required
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[0059] The following description will focus on audio event visualization apparatus, methods and applications, but it should be understood that the described methods and principles can be used for many other purposes and in many different ways in other embodiments and applications.
[0060] figure 1 An example of elements of an audio event visualization device arranged to provide visual information about the audio of an audio scene is shown.
[0061] The audio event visualization device comprises a source 101 providing audiovisual data for a scene. Audiovisual data may specifically include video or image data representing a visual scene. The audiovisual data also includes audio data representing an audio scene corresponding to the visual scene. Accordingly, audiovisual data includes audio data and visual data providing a combined audiovisual representation of a scene. Audiovisual data may be, for example, data generated by a game application such as a first person shooter ga...
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An apparatus comprises a receiver (201) receiving a multi-channel audio signal representing audio for a scene. An extractor (203) extracts at least one directional audio component by applying spatial filtering to the multi-channel signal where the spatial filtering is dependent on the multi-channel audio signal. A feature processor (205) determines a set of features for the first directional audio component and a categorizer (207) determines a first audio source category out of a plurality of audio source categories for the directional audio signal in response to the set of features. An assigner (209) assigns a first audio source property to the first directional audio component from a set of audio source properties for the first audio source category. The apparatus may provide very advantageous categorization and characterization of individual audio sources / components present in a multi-channel signal. This may be advantageous e.g. for visualization of audio events.
Description
technical field [0001] The present invention relates to an apparatus and method for audio analysis, in particular, but not exclusively, to classifying audio components of eg video game applications. Background technique [0002] In recent decades, audio applications and services have become increasingly complex and diverse, and in particular, it has become commonplace to provide a variety of different spatial audio applications and experiences. [0003] Audio perception is becoming increasingly important in many audio-visual experiences and applications, and in many cases may be considered important, even more so than visual perception. For example, in video game applications, especially in games such as first-person shooter (FPS) games, the user must use both visual and auditory senses and perceptions to locate enemies, identify objects, detect explosions, etc. Audio scenes convey a great deal of information (such as directions to different sound sources) that is useful fo...
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IPC IPC(8): H04S3/00G01S3/80H04S7/00G06F3/147G06F3/16G09G5/12H04R29/00
CPCG06F3/147G06F3/167H04R29/001H04R2430/20H04S3/002H04S7/30H04S7/40H04S2400/11H04S2420/07G01S3/8034H04S3/008H04S2400/01H04S2400/13
Inventor 马克西姆·巴尔德南森·苏维拉-拉巴斯蒂拉斐尔·格雷夫
Owner 斯蒂尔赛瑞斯法国公司