Atmospheric Pressure Compensation for Equal-Loudness Audio Playback
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Solution Overview
Problem
Audio playing devices produce sound that is either too loud or too soft in special environments due to varying atmospheric pressures, causing discomfort to human ears.
Innovation Solution
A method and apparatus that adjust sound pressure by determining equal-loudness multiples for target frequency points based on ambient atmospheric pressure, using a power amplifying module to amplify audio data accordingly, ensuring sound pressure is consistent with a preset calibration atmospheric pressure value.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If audio data is played without atmospheric pressure compensation, then the device can be used in various environments, but the output sound becomes too loud or too soft causing discomfort to human ears
Solution Approach 1:
The patent changes the audio signal parameters (gain values) based on atmospheric pressure conditions. The processing module adjusts different frequency band gains according to the detected atmospheric pressure value, transforming the audio signal parameters to compensate for pressure-induced sound pressure changes, thereby resolving the contradiction between environmental adaptability and sound comfort
Solution Approach 2:
The patent implements a feedback mechanism where the processing module continuously detects atmospheric pressure values and dynamically adjusts audio signal parameters based on the detected pressure conditions. This closed-loop feedback system ensures that sound pressure remains comfortable across different environmental conditions while maintaining universal device usability
2Reliability
If the audio output is amplified to compensate for low atmospheric pressure, then the sound becomes audible, but the sound pressure becomes too high causing discomfort
Solution Approach 1:
The patent applies different gain adjustments to different frequency bands rather than uniform amplification. The processing module divides the audio spectrum into multiple frequency bands and applies selective gain compensation to each band based on atmospheric pressure effects, achieving reliable audio output without excessive overall sound pressure that would cause discomfort
Solution Approach 2:
The patent dynamically changes audio signal parameters (gain values for different frequency bands) based on atmospheric pressure detection. This parameter adjustment ensures reliable audio output in low-pressure environments while preventing excessive sound pressure by precisely controlling the magnitude and distribution of amplification across frequency spectrum
3Object-affected harmful factors
If the audio output is reduced to compensate for high atmospheric pressure, then the sound pressure becomes comfortable, but the sound becomes too soft reducing audio quality
Solution Approach 1:
The patent adjusts audio signal parameters (gain values) based on atmospheric pressure detection. In high-pressure environments, the processing module applies precise gain reduction that maintains sound pressure comfort while preserving audio quality through intelligent parameter control, avoiding excessive attenuation that would degrade audio output
Data Source
AI summary
The present application relates to the field of audio technology, and provides a method, a device, and an apparatus for playing audio, and a computer-readable storage medium. The method for playing audio includes: obtaining an ambient atmospheric pressure value and audio data to be played; obtaining multiple target frequency points contained in the audio data to be played when the ambient atmospheric pressure value meets a preset condition, and determining equal-loudness multiples corresponding to the target frequency points according to the ambient atmospheric pressure value and a preset calibration atmospheric pressure value; and sending the audio data to be played and the equal-loudness multiples of the target frequency points to a power amplifying module, such that the power amplifying module amplifies the audio data to be played according to the equal-loudness multiples corresponding to the target frequency points.