Spatial Audio Reproduction via Environmental Parameter Calculation
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Solution Overview
Problem
Conventional methods for achieving spatial sound effects in audio playback lack efficiency and accuracy in replicating the actual environment's conditions, as they rely on manual frequency adjustments without considering the environment's spatial parameters.
Innovation Solution
A sound-reproducing method and apparatus that generates a playback sound in a test environment, calculates spatial parameters based on received and original audio data, and applies these parameters to modify input audio to reproduce the spatial quality of the environment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual equalizer adjustment is used to modify frequency response, then spatial effect can be achieved, but the method is inefficient and does not reflect actual environment conditions
Solution Approach 1:
The system automatically measures the test environment spatial parameters by playing test audio signals and analyzing the received sound data, eliminating the need for manual equalizer adjustment. The processing module calculates spatial parameters (such as impulse response, transfer function, or frequency response) based on the original audio data and received sound data, enabling the system to self-adapt to the actual environment.
Solution Approach 2:
The system uses feedback from the sound-receiving module to measure the actual spatial characteristics of the environment. By comparing the original audio data with the received sound data, the processing module continuously adjusts and optimizes the spatial parameters, creating a closed-loop system that improves both accuracy and efficiency.
2Adaptability or versatility
If conventional equalizer methods are used, then frequency response can be modified, but the actual environment conditions are not reflected
Solution Approach 1:
Before actual audio playback, the system performs preliminary measurement by playing test audio signals through the playback module and capturing the environment's response through the sound-receiving module. This preliminary action allows the system to pre-calculate the spatial parameters specific to the test environment, ensuring accurate adaptation when reproducing actual audio content.
Solution Approach 2:
The patent replaces manual mechanical equalizer adjustment with an automated digital signal processing system. The processing module uses computational algorithms to calculate spatial parameters based on measured data, substituting manual mechanical tuning with automated electronic measurement and calculation, thereby improving both accuracy and environment adaptability.
Data Source
AI summary
A sound-reproducing method that includes the steps outlined below is provided. A playback sound is generated by applying original audio into a test environment. The playback sound is received to generate received sound data. At least one test environment spatial parameter corresponding to the test environment is calculated according to known audio data related to the original audio and the received sound data. Input audio is modified by applying the test environment spatial parameter thereto to generate reproduced audio.