Signal Frequency Correction for Beat Noise on Adjacent Cables
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Solution Overview
Problem
Existing noise detection apparatuses fail to detect and curb beat noise generated when multiple signals are received via adjacent communication cables.
Innovation Solution
A noise removing apparatus that determines a beat waveform generation condition based on signal frequencies and corrects the frequencies of the signals when the condition is satisfied, using a beat waveform generation condition determination unit, a correction unit, and a transmission unit to transmit the corrected signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a noise detection apparatus determines noise based on switching operation characteristics in a switching amplifier, then switching noise can be detected, but beat noise generated when multiple signals are received via adjacent communication cables cannot be detected
Solution Approach 1:
The invention changes the detection parameter from switching operation characteristics to frequency relationships between multiple signals. By monitoring whether frequency differences between signals received via adjacent communication cables fall within a predetermined range, the system can detect beat noise conditions without being limited to switching noise detection methods.
2Object-generated harmful factors
If signal frequencies are corrected to prevent beat waveform generation, then beat noise can be curtailed, but additional processing steps and system complexity are introduced
Solution Approach 1:
The invention performs preliminary frequency correction on signals before they are transmitted or processed further. By detecting potential beat noise conditions in advance and adjusting frequencies proactively, the system prevents beat noise generation rather than dealing with it afterward, reducing the need for complex post-processing noise cancellation systems.
Data Source
AI summary
A noise removing method executed by a computer is disclosed. In the method, a computer executes determining whether a beat waveform generation condition, which is a condition for beat waveform generation by first and second signals, is satisfied based on frequencies of the first and second signals received via adjacent communication cables. The computer executes correcting the frequency of at least one of the first and second signals when it is determined that the beat waveform generation condition is satisfied. The computer executes transmitting at least the signal of which the frequency has been corrected.