Signal Processing Method and Apparatus
US-2017317663-A1 · Nov 2, 2017 · US
Low-delay filtering
US9036752B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9036752-B2 |
| Application number | US-201114119933-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 5, 2011 |
| Priority date | May 5, 2011 |
| Publication date | May 19, 2015 |
| Grant date | May 19, 2015 |
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Abstract
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A method of frequency-domain filtering is provided that includes a plurality of filters, the plurality of filters including at least one constrained filter(s) W =I, I and at least one unconstrained filter(s) W =1,K− The method includes cascading the W k =i,K unconstrained filter(s). A single constraint window C is applied to the cascaded W =i,K unconstrained filter(s). The W =1,I constrained filter(s) are cascaded with the constrained cascaded W k =1,K unconstrained filter(s) to form a resulting filter W ll =C( W 1{circle around (x)} . . . {circle around (x)} W ){circle around (x)} W . . . W . The frequency domain representation of the single constraint window C may be based, at least in part, on a time domain representation of a single constraint window C that has been circularly shifted such that the frequency domain representation of the constraint window matches a property of the frequency domain representation of the cascaded W =1,K unconstrained filters.
First claim
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What is claimed is: 1. A method of adaptive digital filtering, the method comprising: determining a time domain representation of a soft constraint window, the soft constraint window for zero padding an adaptive digital filter; circularly shifting the time domain representation of the soft constraint matrix to align in the frequency domain with the adaptive digital filter; transforming the time domain representation of the circularly shifted soft constraint matrix to a frequen…
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Classifications
- H03H17/0213Primary
Electricity · mapped topic
- H04B1/10Primary
Electricity · mapped topic
Physics · mapped topic
Electricity · mapped topic
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- What does patent US9036752B2 cover?
- A method of frequency-domain filtering is provided that includes a plurality of filters, the plurality of filters including at least one constrained filter(s) W =I, I and at least one unconstrained filter(s) W =1,K− The method includes cascading the W k =i,K unconstrained filter(s). A single constraint window C is applied to the cascaded W =i,K unconstrained filter(s). The W =1,I constrain…
- Who is the assignee on this patent?
- Buck Markus, Wolff Tobias, Nuance Communications Inc
- What technology area does this patent fall under?
- Primary CPC classification H03H17/0213. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue May 19 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).