Multi-Channel Audio Processing for Focus-Matched Video Playback

The patent divides the audio recording system into multiple independent audio channels, each corresponding to a specific display area. The audio processing module separates audio signals into first audio (corresponding to first display area), second audio (corresponding to second display area), and third audio (corresponding to third display area), allowing each audio channel to be independently recorded and played back to match its corresponding video display area, thereby resolving the contradiction between system complexity and audio experience.

The patent implements local quality by assigning different audio characteristics to different display areas based on their specific features. Each display area receives audio processed according to its own feature values (such as zoom magnification), ensuring that the audio quality and characteristics are locally optimized for each specific display area rather than using a uniform audio channel for all areas.

The patent applies universality by designing an audio processing module that can handle multiple audio channels and different display area features using a unified processing framework. The same audio processing logic is applied across different display areas, with the system automatically adapting to various camera types (wide-angle, telephoto, macro) and their corresponding features, reducing the need for separate specialized processing paths for each scenario.

The patent utilizes parameter changes by dynamically adjusting audio processing parameters based on display area features such as zoom magnification. The audio processing module modifies audio characteristics according to the specific parameter values of each display area (e.g., adjusting audio pickup range based on zoom level), allowing the system to adapt audio recording without requiring fundamentally different processing architectures for different scenarios.

The patent applies preliminary action by pre-processing audio signals into multiple channels according to display area features during the recording phase. The audio processing module proactively separates and processes audio into different channels based on anticipated display area requirements, so that during playback, the system can directly select and play the appropriate audio channel without needing to process or filter raw audio data in real-time, thus preventing information loss.

The patent uses copying by creating separate audio channel copies for each display area. Instead of processing a single audio stream to generate multiple outputs, the system creates independent copies of audio data for each display area, each copy being processed according to its specific feature requirements. This copying approach preserves all original audio information while enabling selective playback of appropriate audio channels.