Acoustic Loop-Back Media Measurement for Digital Terminals
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Solution Overview
Problem
Current methods for measuring digital media consumption, such as 'site-centric' and 'user-centric' approaches, face limitations in tracking time-shifted content consumption, peer-to-peer sharing, and providing accurate demographic data, while also raising privacy concerns and being impractical due to the need for complex software techniques that are not feasible on standard operating systems.
Innovation Solution
A loop-back device is used to derive a return signal from an outbound signal of a digital media terminal, which is routed back through standard inbound audio facilities for content identification, allowing for seamless and homogenous implementation across various devices without interfering with normal usage or compromising privacy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If complex software techniques are used to track media consumption, then measurement accuracy is improved, but device complexity and feasibility increase
Solution Approach 1:
The patent replaces complex software-based tracking mechanisms with a simple acoustic loop-back system. Instead of using sophisticated software to monitor media consumption, the invention uses audio signal routing where the audio output is fed back through the microphone to create a detectable signal pattern, thereby simplifying the measurement system while maintaining accuracy.
Solution Approach 2:
The patent introduces an intermediary acoustic signal path as a mediator between the audio output and input devices. By routing the audio signal through the loop-back path, the system creates an intermediate detectable signal that enables measurement without requiring direct complex software interaction with the media consumption processes.
2Measurement precision
If user-centric measurement methods are implemented, then demographic data accuracy is improved, but privacy concerns and user acceptance worsen
Solution Approach 1:
The patent enables the measurement system to operate autonomously using the device's existing audio infrastructure. The loop-back mechanism automatically captures and processes audio signals without requiring user interaction, consent, or awareness, thereby eliminating privacy concerns while maintaining measurement capability.
Solution Approach 2:
The patent extracts the measurement function from complex software systems and implements it through the acoustic loop-back path. By separating the measurement mechanism from the media consumption software, the system can operate independently without intruding into user privacy or requiring user participation.
3Measurement precision
If site-centric approaches are used, then media item tracking accuracy is improved, but consumer information availability worsens
Solution Approach 1:
The patent creates a universal measurement system that simultaneously tracks both media items and consumer information through the acoustic signal analysis. The same loop-back mechanism that captures media identification signals also captures consumer behavior patterns, thereby providing multi-functional measurement capabilities without requiring separate systems.
Data Source
AI summary
Example methods disclosed herein to monitor media presented by a media device include adjusting, with a circuit, an inbound audio signal input to the media device based on (i) a level of an outbound audio signal generated by the media device and (ii) a level of the inbound audio signal to produce an adjusted inbound audio signal. Such disclosed example methods also include combining, with the circuit, the adjusted inbound audio signal with a sampled version of the outbound audio signal to determine a return signal. Such disclosed example methods further include processing the return signal to determine first identification information to identify first presented media having an audio portion corresponding to the outbound audio signal generated by the media device.