Analysing speech signals
AssigneeCirrus Logic International Semiconductor Ltd.
InventorJohn Paul LESSO
Life of this patent
Estimating the term…
Abstract
A method of analysis of an audio signal comprises: receiving an audio signal representing speech; extracting first and second components of the audio signal representing first and second acoustic classes of the speech respectively; analyzing the first and second components of the audio signal with models of the first and second acoustic classes of the speech of an enrolled user. Based on the analyzing, information is obtained information about at least one of a channel and noise affecting the audio signal.
Claims15
-12. (canceled)
A method of analysis of an audio signal, the method comprising:
- receiving an audio signal representing speech;
- extracting first and second components of the audio signal representing first and second acoustic classes of the speech respectively, the first acoustic class of speech being different to the second acoustic class of speech;
- analyzing the extracted first component of the audio signal with a first model of speech of an enrolled user in the first acoustic class and the extracted second component of the audio signal with a second model of speech of the enrolled user in the second acoustic class;
- and
- based on said analyzing, determining at least one of a property of a channel affecting the first and second components of said audio signal and a property of noise affecting the first and second components of said audio signal.
A system for analysis of an audio signal, the system comprising an input for receiving an audio signal, and being configured for:
- receiving an audio signal representing speech;
- extracting first and second components of the audio signal representing first and second acoustic classes of the speech respectively, the first acoustic class of speech being different to the second acoustic class of speech;
- analyzing the extracted first component of the audio signal with a first model of speech of an enrolled user in the first acoustic class and the extracted second component of the audio signal with a second model of speech of the enrolled user in the second acoustic class;
- and
- based on said analyzing, determining at least one of a property of a channel affecting the first and second components of said audio signal and a property of noise affecting the first and second components of said audio signal.
Dependencies are inferred from the claim text.