Denoising an audio signal using local formant information
AssigneeThe Intellisis Corporation
InventorEric Wiewiora
Life of this patent
Estimating the term…
Abstract
A system, method, and computer program product are provided for cleaning an audio segment. For a given audio segment, an offset amount is calculated where the audio segment is maximally correlated to the audio segment as offset by the offset amount. The audio segment and the audio segment as offset by the offset amount are averaged to produce a cleaned audio segment, which has had noise features reduced while having signal features (such as voiced audio) enhanced.
Claims5
A computer-implemented method to reduce noise in audio, wherein the method is implemented in a computer system that includes one or more physical processors and physical electronic storage, the method comprising:
- obtaining an audio segment that represents voiced audio, wherein the audio segment includes multiple samples having a sample duration;
- determining, by the one or more processors, for individual ones of a set of offsets that delay the audio segment, a correlation between the audio segment and an individual one of a set of delayed audio segments;
- selecting a particular offset from the set of offsets, wherein the particular offset corresponds to a greater correlation than other offsets from the set of offsets;
- determining a particular delayed audio segment based on delaying the audio segment by the particular offset;
- averaging the audio segment and the particular delayed audio segment to obtain a cleaned audio segment;
- and
- outputting the cleaned audio segment.
Dependencies are inferred from the claim text.