Pressure Compensation in Display Sound Devices
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Solution Overview
Problem
Display sound devices face challenges in maintaining high-quality sound reproduction due to pressure applied to their housing, which affects audio playback quality, as conventional methods fail to consistently compensate for these external pressures effectively.
Innovation Solution
Incorporating sensors in the device to detect pressure and using predictive algorithms to adjust audio playback components, such as equalization filters and transducer drive signals, to compensate for the effects of pressure on the acoustic output, thereby maintaining consistent audio quality regardless of how the device is held or supported.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If pressure is applied to the housing of a display sound device, then the device can be held or supported, but the acoustic output quality deteriorates due to vibration dampening and frequency response changes
Solution Approach 1:
The system uses pressure sensors to detect applied pressure on the housing, feeds this information back to a processor, which then adjusts equalization filters and transducer drive signals to compensate for the predicted effect on acoustic output, maintaining consistent sound quality despite external pressure
Solution Approach 2:
The system dynamically changes operational parameters (equalization filter settings and transducer drive signal characteristics) based on detected pressure conditions, adapting the audio playback parameters to compensate for pressure-induced vibrations and frequency response changes
2Device complexity
If conventional display sound devices are used without pressure compensation, then the device structure is simple, but the audio playback quality varies significantly under different pressure conditions
Solution Approach 1:
Pressure sensors and processors are integrated into the device to create a feedback loop that detects pressure conditions and automatically adjusts audio playback parameters, transforming a simple structure into an adaptive system that maintains consistent audio quality across varying pressure conditions
3Reliability
If pressure sensors and predictive algorithms are added to detect and compensate for pressure effects, then audio playback quality consistency improves, but device complexity increases
Solution Approach 1:
The device performs self-diagnosis and self-correction by using integrated pressure sensors to detect conditions and automatically adjusting its own audio playback parameters through predictive algorithms, eliminating the need for external calibration or manual intervention
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
This adaptive pressure compensation technique significantly reduces variations in acoustic response due to external pressure, ensuring consistent audio playback quality across different holding or support conditions, enhancing user experience by maintaining high-quality sound reproduction.
Implementation Method 1
the phone's display screen is vibrated by a transducer so that the display screen functions as a loudspeaker
Implementation Method 2
sensor data indicative of pressure detected at a housing of the device
Data Source
AI summary
A device to process an audio signal representing output sound includes one or more processors configured to generate, responsive to sensor data indicative of pressure detected at a housing of the device, output data based on a predicted effect of the pressure on an acoustic output of the device. The one or more processors are also configured, responsive to the output data, to adjust operation of an audio playback component that generates the acoustic output.