Speech Loudness Metadata for Consistent Media Playback
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Solution Overview
Problem
Existing loudness equalization methods for media data playback result in inconsistent speech loudness, affecting user experience due to variations in media data creation.
Innovation Solution
A method and apparatus for determining speech loudness metadata based on speech loudness distribution, adjusting playback loudness to equalize speech loudness, and optionally adjusting programme loudness to achieve balanced playback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If overall playback loudness equalization is performed based on media data, then playback loudness consistency is improved, but speech loudness consistency deteriorates
Solution Approach 1:
The patent segments the audio data into speech data and non-speech data, and applies different loudness equalization strategies to each segment. The speech loudness metadata is calculated separately from the overall media data, allowing independent optimization of speech loudness while maintaining overall playback consistency.
Solution Approach 2:
The patent applies local quality by focusing the equalization adjustment on specific segments (speech data) rather than treating the entire media data uniformly. The speech loudness metadata enables targeted adjustment of speech portions to ensure consistent speech loudness while allowing other audio elements to maintain their original characteristics.
2Stability of the object's composition
If loudness equalization adjustment is performed on media data, then playback loudness is equalized, but speech loudness variation increases
Solution Approach 1:
The patent performs preliminary action by calculating the speech loudness metadata before applying the loudness equalization adjustment. The speech loudness distribution result is obtained in advance, allowing the equalization process to be optimized specifically for speech segments, ensuring consistent speech loudness while achieving overall playback equalization.
Data Source
AI summary
The present disclosure relates to the computer processing technology, discloses a playback loudness processing method and apparatus of media data, an electronic device, and a storage medium. The playback loudness processing method of media data includes: obtaining media data; determining, in response to the media data including speech data, speech loudness metadata of the speech data based on a speech loudness distribution result corresponding to the speech data; and adjusting playback loudness of the media data based on the speech loudness metadata to obtain target media data for playback.