System for suppressing rain noise
First Claim
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1. A system for attenuating rain noise, comprising:
- a rain noise detector configured to analyze a frequency spectrum of an input signal to identify whether the input signal contains a rain noise, where the rain noise detector is configured to fit a model to a portion of the input signal and identify that a noise of the input signal is associated with rain based on a correlation between the model and the portion of the input signal; and
a rain noise attenuator configured to remove at least a portion of the rain noise identified by the noise detector from the input signal to obtain an output sound signal with reduced rain noise content.
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Abstract
A voice enhancement logic improves the perceptual quality of a processed signal. The voice enhancement system includes a noise detector and a noise attenuator. The noise detector detects and models the noise associated with rain. The noise attenuator dampens or reduces the rain noise from a signal to improve the intelligibility of an unvoiced, a fully voiced, or a mixed voice segment.
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Citations
19 Claims
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1. A system for attenuating rain noise, comprising:
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a rain noise detector configured to analyze a frequency spectrum of an input signal to identify whether the input signal contains a rain noise, where the rain noise detector is configured to fit a model to a portion of the input signal and identify that a noise of the input signal is associated with rain based on a correlation between the model and the portion of the input signal; and a rain noise attenuator configured to remove at least a portion of the rain noise identified by the noise detector from the input signal to obtain an output sound signal with reduced rain noise content. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of dampening rain noise, comprising:
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fitting a model to a portion of an input signal; identifying that a noise of the input signal is associated with rain based on a correlation between the model and the portion of the input signal; and dampening at least a portion of the noise associated with rain from the input signal to obtain an output sound signal with reduced rain noise content. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A non-transitory computer-readable storage medium with executable instructions stored thereon, where the instructions are configured to cause a processor to perform the steps of:
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fitting a model to a portion of an input signal; identifying that a noise of the input signal is associated with rain based on a correlation between the model and the portion of the input signal; and dampening at least a portion of the noise associated with rain from the input signal to obtain an output sound signal with reduced rain noise content. - View Dependent Claims (18, 19)
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Specification