Combo Audio-Motor Signal Correction for Analog Crossover Distortion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing method of driving Combo components, which integrate a loudspeaker and a motor, results in distorted frequency response amplitudes and phases due to the use of an analog frequency divider, leading to a significant difference between actual and desired signals and affecting the operation of the loudspeaker and motor, thereby reducing user experience.
Innovation Solution
A Combo system that includes a signal fuser, power amplifier, analog frequency divider, and signal processor to fuse and correct digital signals based on predicted voltage data, ensuring consistent phases and amplitudes of the loudspeaker and motor signals, using a signal processor to predict and correct the signals before digital-to-analog conversion and power amplification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If an analog frequency divider is used to separate loudspeaker and motor signals, then the Combo component can be driven, but distortion in frequency response amplitudes and phases occurs
Solution Approach 1:
The patent replaces the analog frequency divider (mechanical/electrical system) with a digital signal processing approach. The signal processor performs frequency division in the digital domain before DAC conversion, eliminating the distortion introduced by analog frequency division while maintaining the capability to separately control loudspeaker and motor signals.
Solution Approach 2:
The patent introduces a signal processor as an intermediary between the fused digital signal and the analog frequency divider. This intermediary processes the digital signals to predict and correct voltage data, compensating for the distortion that will be introduced by the analog frequency divider, thereby improving signal accuracy while maintaining system operability.
2Manufacturing precision
If digital signals are corrected based on predicted voltage data, then signal accuracy is improved, but system complexity increases
Solution Approach 1:
The signal processor performs multiple functions: it separates fused digital signals, predicts voltage data across the frequency spectrum, corrects amplitude and phase distortion, and prepares corrected signals for DAC conversion. By consolidating these functions into a single multi-functional device, the patent improves signal accuracy without proportionally increasing overall system complexity.
Solution Approach 2:
The signal processor performs preliminary correction of digital signals before they are converted to analog and passed to the analog frequency divider. By predicting and correcting voltage data in advance (pre-processing), the system compensates for future distortion, improving final signal accuracy while keeping the correction logic contained in one preprocessing stage.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system ensures that the loudspeaker and motor operate as expected by aligning the actual signals with their desired counterparts, improving the performance and user experience by minimizing signal distortion.
Implementation Method 1
the power amplifier receives a fused digital signal that fuses a digital signal of the loudspeaker with a digital signal of the motor; converts a received fused digital signal into a fused analog signal
Data Source
AI summary
A Combo system, a method of driving the Combo system, a signal processor, and a storage medium are provided. The Combo system includes a loudspeaker, a motor, an analog divider, a power amplifier, a signal fuser, and a signal processor. The signal fuser fuses the loudspeaker digital signal with a digital signal of the motor to obtain a fused digital signal. The signal processor predicts voltage data loaded on two ends of the loudspeaker and two ends of the motor if the fused digital signal transmits to the analog frequency divider and the analog frequency divider performs the frequency division; and corrects the loudspeaker digital signal and/or the motor digital signal based on the predicted voltage data to enable the loudspeaker analog signal to be consistent with the loudspeaker digital signal and enable the motor analog signal to be consistent with the motor digital signal.