Audio Smoothing Device for Waveform Amplitude Control
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Solution Overview
Problem
Existing audio systems, such as handheld music players, face challenges in maintaining consistent sound volume due to narrow amplitude ranges, leading to inconvenient manual adjustments and potential disconnection of high sound levels, which can disrupt the listening experience.
Innovation Solution
An audio smoothing system that divides audio waveforms into intervals and wavebands, calculates average amplitudes, and generates smoothed waveforms by multiplying waveband parameters with corresponding amplitude values, ensuring a continuous and smooth audio output without sudden volume changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the hearing protection system lowers the sound volume automatically when exceeding a predetermined power value, then the sound volume control is improved, but the user experience deteriorates due to sudden hearing protection signals and disconnected high amplitude values
Solution Approach 1:
The audio smoothing device performs preliminary smoothing processing on the audio waveform before output. By dividing the waveform into intervals, calculating average amplitudes, and generating smoothed waveforms in advance, the system prevents sudden amplitude spikes before they occur, rather than reacting after they exceed a threshold
Solution Approach 2:
The system applies beforehand cushioning by smoothing the audio waveform through interval division and average amplitude calculation. This creates a cushioned transition that prevents abrupt amplitude changes, protecting the user's ears from sudden loud sounds while maintaining audio quality
2Object-affected harmful factors
If the audio waveform is smoothed by dividing into intervals and calculating average amplitudes, then the sudden amplitude spikes are prevented, but the device complexity increases
Solution Approach 1:
The audio waveform is segmented into multiple intervals along the time axis. Each interval is further divided into wavebands (front, middle, rear). This segmentation allows the system to process and smooth amplitude variations locally in each segment, preventing sudden spikes while maintaining overall waveform integrity
Solution Approach 2:
The system changes parameters by calculating average amplitudes for each interval and deriving waveform parameters (first, second, third waveform parameters) from these averages. These parameters are then used to generate smoothed waveforms, transforming the original waveform into a smoothed version that eliminates sudden amplitude spikes
Data Source
AI summary
The present invention relates to an audio smoothing system for smoothing an audio waveform to generate a smoothed waveform, including an audio generator, an audio smoothing device and an operating interface. The audio smoothing device is provided for receiving an audio waveform of the audio generator to smooth a sound corresponding to the audio waveform, and the audio smoothing system includes a sound volume modulator, a waveform divider and a calculator. An audio smoothing method includes the steps of: dividing the audio waveform according to a predetermined cycle time while the audio waveform is received; calculating respectively average waveform amplitudes; after setting an input sound volume via the operating interface, dividing the input sound volume by amplitude values respectively to obtain amplitude parameters; and multiplying all the amplitude parameters with the amplitude values corresponding to the divided audio waveforms to obtain the smoothed waveform.