Radio access network system with orchestration entity
US-2024356789-A1 · Oct 24, 2024 · US
Systems and methods for enhancing audio quality of FM receivers
US9130643B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9130643-B2 |
| Application number | US-201213362244-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 31, 2012 |
| Priority date | Jan 31, 2012 |
| Publication date | Sep 8, 2015 |
| Grant date | Sep 8, 2015 |
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Abstract
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Systems and methods are described for enhancing the audio quality of an FM receiver. In embodiments described herein, quadrature L−R demodulation is applied to a composite baseband signal output by an FM demodulator to obtain an L−R noise signal. A channel quality measure is calculated based on the L−R noise signal and is used to control whether a pop suppression technique is applied to an L+R signal obtained from the composite baseband signal to detect and remove noise pulses therefrom. The channel quality measure and the L−R noise signal are also leveraged to perform single-channel noise suppression in the frequency domain on an L−R signal obtained from the composite baseband signal and on the L+R signal. The channel quality measure is also used to control the application of a fast fading compensation process that replaces noisy segments of the L−R and L+R signal with replacement waveforms generated via waveform extrapolation.
First claim
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What is claimed is: 1. A method for enhancing the audio quality of a Frequency Modulation (FM) receiver, comprising: receiving a composite baseband signal that is output from an FM demodulator, the FM demodulator demodulating an input signal to produce the composite baseband signal; applying quadrature L−R demodulation to the received composite baseband signal to obtain an L−R noise signal, wherein applying the quadrature L−R demodulation to the composite baseband signal compris…
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Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
- H04B1/1661Primary
Electricity · mapped topic
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- What does patent US9130643B2 cover?
- Systems and methods are described for enhancing the audio quality of an FM receiver. In embodiments described herein, quadrature L−R demodulation is applied to a composite baseband signal output by an FM demodulator to obtain an L−R noise signal. A channel quality measure is calculated based on the L−R noise signal and is used to control whether a pop suppression technique is applied to an L+R …
- Who is the assignee on this patent?
- Chen Juin-Hwey, Baker Thomas F, Mccarthy Evan S, and 4 more
- What technology area does this patent fall under?
- Primary CPC classification H04B1/1661. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Sep 08 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).