Wideband Audio Intercom for Drive-Through Clarity
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Solution Overview
Problem
Quick service restaurant intercom communication systems using narrowband audio often result in misunderstandings due to low fidelity sound, leading to decreased customer satisfaction and increased staff fatigue, especially in noisy environments.
Innovation Solution
Implementing a wideband audio communication system that includes an audio order placement subsystem associated with a menu board and speaker post, a base station, and an audio order receiving subsystem, which uses microphones, speakers, and signal processors to encode and decode wideband order information signals for clear communication between customers and staff members.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If narrowband audio is used in intercom communication systems, then device complexity is reduced, but communication clarity and sound fidelity deteriorate
Solution Approach 1:
The patent changes the audio frequency parameter from narrowband (typically 300-3400 Hz) to wideband (50-7000 Hz or broader), thereby improving sound fidelity and communication clarity while maintaining system feasibility through modern digital signal processing capabilities
2Use of energy by moving object
If narrowband audio is used for communication, then energy consumption is reduced, but listening effort and staff fatigue increase
Solution Approach 1:
The system transitions to wideband audio parameters that provide more natural speech perception, reducing the cognitive load and listening effort required by staff members, thereby decreasing fatigue and improving reliability of communication
3Device complexity
If narrowband audio is used, then system cost is reduced, but order accuracy and customer satisfaction decrease
Solution Approach 1:
By implementing wideband audio parameters in the intercom system, the patent improves order accuracy and customer satisfaction through clearer communication, while the increased system cost is offset by reduced errors and improved operational efficiency
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
The wideband audio system enhances communication clarity, reduces listening effort for staff, improves order accuracy, and increases customer satisfaction by providing clearer and more natural communication, even in noisy conditions, leading to increased customer loyalty.
Implementation Method 1
The first microphone may be configured to receive sound from a customer placing an order at or near the menu board and to generate wideband order information signals that represent the received sound
Implementation Method 2
The first speaker may be configured to receive wideband order information signals and to generate sound represented in the received wideband order information signals
Implementation Method 3
The first signal processor may be configured to encode wideband order information signals received from the first microphone into encoded audio communication signals for transmission by the first transceiver
Data Source
AI summary
This disclosure relates to a quick service restaurant intercom communication system. The system is configured such that communication between a customer and a staff member is accomplished in wideband audio. Intercom communication systems that utilize narrow band audio for communication between drive-through customers and staff members may be considered “good enough”. However, the low fidelity sound produced by narrow band audio systems often results in misunderstandings between customers and staff members, a high amount of background noise during communication, and/or other negative effects. Wideband audio may facilitate clearer communication between customers and staff members. Wideband audio communication may be costlier and/or more complicated to implement, but may result in increased staff efficiency and/or increased customer satisfaction. In some implementations, the system may include an audio order placement sub-system, a base station, an order entry device, a mounting mechanism, and/or other components.