In-Situ Speaker Type Detection for Automated Sound System Tuning
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for detecting speaker types in environments like studios, home theaters, and automotive audio systems are manual, repetitive, and often require disassembly, which is time-consuming and risky, especially in vehicles where speakers are embedded, making automated in-situ detection necessary for efficient acoustic measurements and sound tuning.
Innovation Solution
A computer-implemented method using an acoustic detector to determine sound signal responses from each speaker, assign operating frequency ranges, and group speakers based on type and location, with a control entity and user interface for visualization and tuning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual measurement methods are used to detect speaker frequency ranges, then measurement accuracy can be maintained, but the process becomes time-consuming and repetitive when multiple speakers need to be measured
Solution Approach 1:
The system segments the measurement process by assigning unique identification codes to different speaker groups and measuring them sequentially through code switching. This allows automated batch measurement of multiple speakers without manual reconfiguration, maintaining accuracy while improving productivity.
Solution Approach 2:
The measurement system automatically identifies and measures speakers based on their embedded identification codes without requiring manual intervention. The system self-manages the measurement process by detecting codes, selecting appropriate measurement parameters, and proceeding through the measurement sequence autonomously.
2Reliability
If speakers are removed from their enclosures for frequency measurements in controlled lab environments, then measurement reliability is improved, but the process becomes impossible for embedded speakers and may damage the enclosure
Solution Approach 1:
Identification codes are embedded in speakers during manufacturing before installation. This preliminary action enables later automated identification and measurement without requiring speaker removal or enclosure disassembly, making the process feasible for embedded speakers while maintaining reliability.
Solution Approach 2:
Optical identification codes serve as an intermediary between the speaker and the measurement system. These codes can be read through the enclosure without physical access to the speaker, acting as a mediator that enables measurement while preserving the enclosure integrity.
3Productivity
If technical specifications from manufacturers are used to identify speaker types, then detection speed is improved, but reliability decreases when specifications are unavailable or inaccurate
Solution Approach 1:
The system replaces manual specification checking with automated optical code reading. The identification codes provide machine-readable speaker information that can be automatically processed, eliminating the need for manual specification lookup and ensuring reliable identification regardless of documentation availability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Provides an automated, reliable, and error-reduced method for determining speaker types and groups, ensuring safe operation and improved sound tuning without manual disassembly, facilitating efficient in-situ measurements.
Implementation Method 1
determining a sound signal response detected by an acoustic detector placed in a defined position within the operating environment where the sound system with a plurality of loudspeakers is located
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A sound signal response is detected by acoustic detectors (220) placed at a defined position within an operating environment where a sound system with a plurality of loudspeakers is located. The sound signal response is based on a test sound signal output by each of the loudspeakers and detected for each of the plurality of loudspeakers. For each of the loudspeakers, an operating frequency range is determined based on the detected sound signal response and a speaker type is assigned to each of the loudspeakers based on the determined operating frequency range. For each of the loudspeakers, a location in the operating environment is provided and a grouping (282-294) for each of the loudspeakers, by which each loudspeaker is grouped into one of several loudspeaker groups based on the provided position and the speaker type. The determined grouping is provided for further tuning the sound system.