Low delay modulated filter bank
US-9449608-B2 · Sep 20, 2016 · US
Multi-mode audio amplifiers
US9112480B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9112480-B2 |
| Application number | US-201213670071-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 6, 2012 |
| Priority date | May 25, 2007 |
| Publication date | Aug 18, 2015 |
| Grant date | Aug 18, 2015 |
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Abstract
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An audio amplifier including (i) a mode controller configured to generate a control signal, and (ii) a variable-length finite impulse response (FIR) filter. The variable-length FIR filter includes (i) a first fixed-length FIR filter configured to generate a first filtered signal based on a first digital audio signal, and (ii) a second fixed-length FIR filter configured to generate a second filtered signal based on the first digital audio signal. The variable-length FIR filter also includes an output module configured to (i) select one of the first filtered signal or the second filtered signal based on the control signal, and (ii) provide the selected one of the first filtered signal or the second filtered signal as an output signal. The audio amplifier also includes an analog module configured to generate an amplified analog signal based on the output signal.
First claim
Opening claim text (preview).
What is claimed is: 1. An audio amplifier comprising: a mode controller configured to generate a control signal based on a bandwidth of an audio input signal, wherein the control signal has a first state in response to the bandwidth being a first bandwidth value and a second state in response to the bandwidth being a second bandwidth value, and wherein the second bandwidth value is greater than the first bandwidth value; and a variable-length finite impulse response (FIR) filter…
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Electricity · mapped topic
- H03H17/0294Primary
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
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Frequently asked questions
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- What does patent US9112480B2 cover?
- An audio amplifier including (i) a mode controller configured to generate a control signal, and (ii) a variable-length finite impulse response (FIR) filter. The variable-length FIR filter includes (i) a first fixed-length FIR filter configured to generate a first filtered signal based on a first digital audio signal, and (ii) a second fixed-length FIR filter configured to generate a second filt…
- Who is the assignee on this patent?
- Marvell World Trade Ltd
- What technology area does this patent fall under?
- Primary CPC classification H03H17/0294. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Aug 18 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).