20240012093. Improved location of an acoustic source simplified abstract (Orange)

From WikiPatents
Jump to navigation Jump to search

Improved location of an acoustic source

Organization Name

Orange

Inventor(s)

Jérome Daniel of Chatillon Cedex (FR)

Srdan Kitic of Chatillon Cedex (FR)

Improved location of an acoustic source - A simplified explanation of the abstract

This abstract first appeared for US patent application 20240012093 titled 'Improved location of an acoustic source

Simplified Explanation

The patent application describes a method for processing audio signals acquired by a microphone to locate a sound source in a space with a wall. The method involves applying a time-frequency transform to the acquired signals and expressing a general complex velocity vector in the frequency domain. This vector represents the composition between a direct acoustic path between the source and the microphone and a reflected acoustic path resulting from a reflection on the wall. The reflected path has a delay relative to the direct path. The direction of the direct path, the distance from the source to the microphone, and/or the distance from the source to the wall can be determined as a function of the delay and the vectors.

  • The method processes audio signals acquired by at least one microphone to locate a sound source in a space with a wall.
  • A time-frequency transform is applied to the acquired signals to analyze their frequency components.
  • A general complex velocity vector is expressed in the frequency domain, representing the composition between a direct acoustic path and a reflected acoustic path.
  • The direct acoustic path is the path between the source and the microphone, while the reflected acoustic path results from a reflection on the wall.
  • The reflected path has a delay relative to the direct path, which can be used to determine the direction of the direct path, the distance from the source to the microphone, and/or the distance from the source to the wall.

Potential applications of this technology:

  • Sound localization systems: The method can be used in systems that require accurate localization of sound sources in spaces with walls, such as surveillance systems or virtual reality applications.
  • Room acoustic analysis: By analyzing the reflected acoustic path, the method can provide insights into the acoustic properties of a room, which can be useful for architectural design or acoustic engineering.

Problems solved by this technology:

  • Accurate sound source localization: The method addresses the challenge of accurately locating sound sources in spaces with walls, where reflections can distort the perceived direction of the source.
  • Reflection identification: By analyzing the reflected acoustic path, the method can identify and characterize the reflections caused by the presence of walls, which can help in understanding the acoustic behavior of a space.

Benefits of this technology:

  • Improved spatial awareness: The method allows for more accurate localization of sound sources, providing a better understanding of the spatial distribution of sound in a given space.
  • Enhanced audio recording and reproduction: By accounting for reflections, the method can improve the quality of audio recordings or reproductions, reducing unwanted artifacts caused by reflections from walls.


Original Abstract Submitted

a method of processing audio signals acquired by at least one microphone to locate a sound source in a space having a wall. the method includes applying a time-frequency transform to the acquired signals and expressing a general complex velocity vector with a real part and an imaginary part in the frequency domain. the vector has a denominator with a component other than an omnidirectional component and characterizes a composition between: a first acoustic path, direct between the source and the microphone, represented by a first vector, and a second acoustic path resulting from a reflection on the wall and represented by a second vector. the second path has a delay relative to the direct path. a direction of the direct path, a distance from the source to the microphone, and/or a distance from the source to the wall is determined as a function of the delay and the vectors.

Retrieved from "http://wikipatents.org/index.php?title=20240012093._Improved_location_of_an_acoustic_source_simplified_abstract_(Orange)&oldid=27249"