Multi-Channel Audio Level Correction Without Down-Mixing
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Solution Overview
Problem
Conventional audio processing apparatuses are limited in handling multi-channel audio data, as they typically down-mix it to two-channel data for level corrections, which restricts flexibility in settings and fails to adapt to diverse user preferences and sound sources.
Innovation Solution
An audio processing apparatus with a level judging unit, a level correcting unit, and a level judgment thinning controller that allows for volume level corrections of multi-channel audio data without down-mixing, enabling optional settings and adjustments based on the type of audio data and user preferences, by thinning the level judgment frequency and using multiple level judging and correcting devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If multi-channel audio data is down-mixed to two-channel data for level corrections, then the level correction processing can be implemented using conventional apparatus, but the original channel information is lost and flexibility in settings is reduced
Solution Approach 1:
The audio processing apparatus is divided into multiple independent level correcting units, each corresponding to a specific channel. This segmentation allows each channel to be processed independently while maintaining the multi-channel structure, avoiding the need to down-mix to two-channel data while still enabling conventional level correction techniques to be applied to each channel separately.
Solution Approach 2:
The level correcting units are designed with universal functionality that can handle different audio formats and channel configurations. Each level correcting unit can process various types of audio data (stereo, multi-channel, etc.) and adapt to different user preferences, providing both implementation simplicity and channel setting flexibility simultaneously.
2Ease of operation
If level correction is applied to all channels of multi-channel audio data, then comprehensive volume control is achieved, but processing complexity and throughput overload increase
Solution Approach 1:
The audio processing apparatus dynamically adjusts the number of level correcting units based on the input audio data characteristics and user needs. When comprehensive volume control is required, all level correcting units are activated; when processing load is a concern, fewer units can be activated. This dynamic configuration allows the system to balance volume control comprehensiveness with processing complexity adaptively.
3Productivity
If conventional two-channel level correction apparatus is used for multi-channel audio, then processing can be implemented, but the apparatus cannot provide optional settings for different channels and audio formats
Solution Approach 1:
The invention extends the conventional two-channel level correction apparatus by adding more dimensional capabilities - specifically, by incorporating multiple level correcting units that operate in parallel across different channels. This dimensional extension allows the apparatus to maintain the productivity of conventional processing while gaining the adaptability to handle various audio formats and provide optional settings for different channels.
Data Source
AI summary
A audio processing apparatus capable of judging and correcting volume levels of audio data, with a level judgment thinning controller for thinning the frequency of the level judgments provided therein, can reduce a throughput and implement the level judgments and corrections in the case of multi-channel input audio data maintaining the original number of the channels thereof. The audio processing apparatus, with a plurality of level judging devices and level correcting devices further provided therein, can implement audio processings at optional settings in response to users' preferences. The present invention thereby provides the capability of judging and correcting levels of the multi-channel audio data while maintaining the original number of the channels thereof.