Speaker Identification via Impedance Measurement
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Solution Overview
Problem
Audio devices lack the ability to automatically determine the identity of connected speakers, leading to potential poor audio quality due to the lack of knowledge about the connected speaker's characteristics, which must be manually compensated for.
Innovation Solution
An audio device that calculates the impedance of connected speakers using a resistor and identification data from reference speakers to determine the speaker's identity, allowing for audio compensation and storing this information for future use, including remote updates and messaging for user alerts on proper fit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an open standard interface (4mm or 3.5mm connectors) is used to connect speakers, then almost any speakers from different brands and models can be connected, but the audio device has no knowledge of what speaker is connected, leading to poor audio quality and requiring manual compensation
Solution Approach 1:
The patent introduces an intermediary component - a transponder or identification circuit - that mediates between the speaker and the audio device. This intermediary carries identification data that the audio device can read through the existing electrical connection, allowing the device to identify the speaker without changing the open standard interface. The intermediary transfers information from the speaker to the audio device through the same connector already in use.
Solution Approach 2:
The patent replaces the manual identification process (mechanical/human action) with an automated electronic identification system. Instead of manually configuring or knowing the speaker characteristics, the system uses electrical signals to automatically read identification data from the connected speaker, substituting electronic automation for manual processes.
2Manufacturing precision
If manual compensation is used to enhance audio quality for connected speakers, then audio quality can be improved for specific speakers, but the process is cumbersome and requires user intervention
Solution Approach 1:
The system enables self-service by allowing the audio device to automatically identify the connected speaker and apply appropriate compensation settings without user intervention. The speaker itself provides its identification information through the transponder, and the audio device autonomously retrieves and applies the correct configuration, making the system self-configuring.
Solution Approach 2:
The patent implements a feedback loop where the audio device reads identification data from the speaker, retrieves corresponding compensation parameters, and applies them automatically. This closed-loop system continuously adapts to the connected speaker, providing real-time optimization without requiring manual user input or configuration.
3Extent of automation
If impedance calculation means are added to calculate speaker impedance, then speaker identity can be determined automatically, but the device complexity increases
Solution Approach 1:
The patent makes the existing electrical connection serve multiple functions: it continues to provide audio signal transmission while simultaneously serving as a communication channel for reading speaker identification data. The same connector and circuit pathways are used for both audio signals and identification data exchange, eliminating the need for separate dedicated identification hardware.
Solution Approach 2:
The patent merges the identification function with the existing audio connection interface. Instead of adding separate identification hardware, the system combines the speaker identification capability with the standard audio connector, allowing both audio transmission and identification data reading through the same physical interface and circuitry.
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
Enhances audio quality by enabling automatic compensation based on speaker identity, improving sound quality and user experience, while also providing valuable marketing and sales information for manufacturers.
Implementation Method 1
impedance calculation means arranged to calculate an impedance of the at least one speaker
Data Source
AI summary
The invention relates to an audio device comprising:an audio source arranged to produce audio signals;an audio output arranged to connect at least one speaker with said audio device;impedance calculation means arranged to calculate an impedance of said at least one speaker;a speaker identification module arranged to determine the identity of said at least one speaker using said impedance and identification data relating to one or more reference speakers. Once the identity of a speaker is known, it can be used for audio compensation or marketing information.