Apparatus and method for providing an informed multichannel speech presence probability estimation
AssigneeFraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
InventorsEMANUEL HABETS, Maja TASESKA
Life of this patent
Estimating the term…
Abstract
An apparatus for providing a speech probability estimation is provided. The apparatus includes a first speech probability estimator for estimating speech probability information indicating a first probability on whether a sound field of a scene includes speech or on whether the sound field of the scene does not include speech. Moreover, the apparatus includes an output interface for outputting the speech probability estimation depending on the speech probability information. The first speech probability estimator is configured to estimate the first speech probability information based on at least spatial information about the sound field or spatial information on the scene.
Claims20
An apparatus for providing a speech probability estimation, comprising:
- a first speech probability estimator for estimating speech probability information indicating a first probability on whether a sound field of a scene comprises speech or on whether the sound field of the scene does not comprise speech, and
- an output interface for outputting the speech probability estimation depending on the speech probability information,
- wherein the first speech probability estimator is configured to estimate the first speech probability information based on at least spatial information about the sound field or spatial information on the scene.
An apparatus for determining a noise power spectral density estimation, comprising:
- a first speech probability estimator for estimating speech probability information
- indicating a first probability on whether a sound field of a scene comprises speech or on whether the sound field of the scene does not comprise speech, and
- an output interface for outputting the speech probability estimation depending on the speech probability information,
- wherein the first speech probability estimator is configured to estimate the first speech probability information based on at least spatial information about the sound field or spatial information on the scene, and a noise power spectral density estimation unit,
- wherein the apparatus is configured to provide the speech probability estimation to the noise power spectral density estimation unit, and
- wherein the noise power spectral density estimation unity is configured to determine the noise power spectral density estimation based on the speech probability estimation and a plurality of input audio channels.
An apparatus for estimating a steering vector, comprising:
- a first speech probability estimator for estimating speech probability information indicating a first probability on whether a sound field of a scene comprises speech or on whether the sound field of the scene does not comprise speech, and
- an output interface for outputting the speech probability estimation depending on the speech probability information,
- wherein the first speech probability estimator is configured to estimate the first speech probability information based on at least spatial information about the sound field or spatial information on the scene, and
- a steering vector estimation unit,
- wherein the apparatus is configured to provide the speech probability estimation to the steering vector estimation unit, and
- wherein the steering vector estimation unit is configured to estimate the steering vector based on the speech probability estimation and a plurality of input audio channels.
An apparatus for multichannel noise reduction, comprising:
- a first speech probability estimator for estimating speech probability information
- indicating a first probability on whether a sound field of a scene comprises speech or on whether the sound field of the scene does not comprise speech, and
- an output interface for outputting the speech probability estimation depending on the speech probability information,
- wherein the first speech probability estimator is configured to estimate the first speech probability information based on at least spatial information about the sound field or spatial information on the scene, and
- a filter unit,
- wherein the filter unit is configured to receive a plurality of audio input channels,
- wherein the apparatus is configured to provide the speech probability information to the filter unit, and
- wherein the filter unit is configured to filter the plurality of audio input channels to acquire filtered audio channels based on the speech probability information.
A method for providing a speech probability estimation, comprising:
- estimating speech probability information indicating a first probability on whether a sound field comprises speech or on whether the sound field does not comprise speech, and
- outputting the speech probability estimation depending on the speech probability information,
- wherein estimating the first speech probability information is based on at least spatial information about the sound field or spatial information on the scene.
Dependencies are inferred from the claim text.