Real-Time Room Acoustic Impulse Response Calculation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for determining room acoustic impulse responses are limited in application and temporal duration, making them unsuitable for real-time analysis of actual rooms, especially those with human hearing frequency ranges and larger spaces like concert halls or stadiums.
Innovation Solution
A method and device that continuously emit and detect acoustic input and output signals in real time, using multi-thread technology and level-controlled triggering to calculate room acoustic impulse responses up to several seconds, allowing for dynamic analysis and filtering of interfering signals, and averaging multiple input channels for improved accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If static measurement methods are used to determine acoustic impulse response, then measurement precision can be achieved, but the method is not suitable for real-time analysis and is limited in application to small spaces
Solution Approach 1:
The patent transforms the static measurement method into a dynamic real-time measurement system. The evaluating device continuously calculates the acoustic impulse response as new acoustic output signal data becomes available, enabling real-time analysis while maintaining measurement precision through continuous signal processing and evaluation.
Solution Approach 2:
The system prepares for real-time analysis by pre-configuring the evaluating device with the necessary processing algorithms and data structures. The acoustic input signal is continuously emitted and the system is ready to immediately process and evaluate the acoustic output signal as it is detected, enabling seamless real-time operation.
2Area of stationary object
If known methods are applied to large spaces like concert halls or stadiums, then coverage area is sufficient, but the temporal duration and application limitations prevent effective measurement
Solution Approach 1:
The patent implements continuous emission of the acoustic input signal and continuous detection and evaluation of the acoustic output signal. This uninterrupted measurement process enables the system to capture acoustic responses over extended temporal durations suitable for large spaces with complex acoustic characteristics, such as concert halls or stadiums.
Solution Approach 2:
The system uses a detection time window that can be adapted to capture only the relevant portion of the acoustic impulse response. By selectively evaluating specific time portions of the acoustic output signal, the system can effectively measure large spaces while filtering out interfering signals that occur outside the window of interest.
3Productivity
If real-time measurement is implemented, then productivity and dynamic analysis are improved, but interfering signals and noise become more significant issues
Solution Approach 1:
The evaluating device continuously monitors the acoustic output signal and compares it against expected patterns. By implementing feedback mechanisms in the signal processing, the system can identify and filter interfering signals in real-time, maintaining measurement quality while enabling continuous operation.
Solution Approach 2:
The system employs a detection time window that selectively captures only the relevant portion of the acoustic response while excluding time periods with significant interfering signals or noise. This partial action approach allows real-time measurement productivity while automatically filtering out harmful factors that occur outside the window of interest.
4Measurement precision
If multiple input channels are used for averaging, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple input channels in the evaluating device to perform averaging of the acoustic impulse response measurements. By merging the data from multiple channels and computing their average, the system improves measurement precision through statistical averaging while using a unified processing architecture that manages complexity.
Data Source
AI summary
Embodiments of the invention can relate to methods and devices for determining a room acoustic impulse response in a time domain. In one embodiment, an acoustic input signal from an acoustic signal source is emitted into an acoustic room, an acoustic output signal is detected by an acoustic measuring device in the room and fed from the acoustic measuring device to an evaluating device and, via the evaluating device, from a reference signal corresponding to the acoustic input signal, and the acoustic output signal, if necessary after prior processing of the acoustic output signal, a room acoustic impulse response in the time domain of the acoustic room is calculated in realtime and prepared for output in that, temporally in parallel and continuously, the acoustic input signal is emitted, the acoustic output signal is detected and, via the evaluating device, the room acoustic impulse response in the time domain is determined.