Notification Volume Control Using Microphone Feedback and Predicted Waveforms
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Solution Overview
Problem
Electronic devices often produce distracting noise in quiet public places due to ringtones and alarms, and the sound may not be audible when the device is far away or obstructed, leading to user embarrassment or missed notifications.
Innovation Solution
An electronic device with a controller that outputs sound events, generates a predicted input waveform, compares the input sound level with the predicted level, and adjusts the output volume based on a threshold value to ensure the sound is audible without user intervention, even in challenging environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electronic device outputs sound at a high volume, then the notification sound is audible even when the device is far away or obstructed, but the sound becomes disturbing in quiet public places
Solution Approach 1:
The electronic device uses the microphone to detect ambient sound levels and provides feedback to the controller. The controller adjusts the output volume based on this feedback, creating a closed-loop system that automatically adapts to the environment. When quiet ambient sound is detected, the volume is reduced to avoid disturbance; when noisy ambient sound is detected, the volume is increased to ensure audibility.
Solution Approach 2:
The electronic device autonomously monitors its own output sound through the microphone and automatically adjusts its volume without requiring user intervention. The system serves itself by detecting environmental conditions and making real-time volume adjustments to optimize both notification reliability and noise disturbance prevention.
2Object-affected harmful factors
If the electronic device outputs sound at a low volume to avoid disturbance in public places, then the notification sound may not be audible when the device is far away from the user or blocked by obstacles
Solution Approach 1:
The electronic device dynamically adjusts the output volume in real-time based on detected ambient sound levels. Rather than using a fixed volume setting, the system continuously adapts the volume parameter to match environmental conditions, enabling low volume in quiet places and high volume in noisy places or when obstacles are present.
Solution Approach 2:
The system changes the output volume parameter based on detected sound level conditions. When the microphone detects that ambient sound is below a threshold, the controller modifies the volume parameter to reduce disturbance. When ambient sound exceeds the threshold or when silence is detected (indicating potential obstruction), the volume parameter is increased to ensure notification reliability.
3Object-affected harmful factors
If the user manually blocks the speaker to reduce sound volume in public places, then the notification sound becomes inaudible, but the user may feel embarrassed if the sound remains loud
Solution Approach 1:
The electronic device autonomously performs the volume adjustment function that would otherwise require manual user intervention. The microphone detects ambient conditions and the controller automatically adjusts the speaker output, eliminating the need for the user to physically block the speaker while still achieving appropriate volume levels for the environment.
Solution Approach 2:
The system replaces the mechanical action of manually blocking the speaker with an electronic control mechanism. Instead of physically obstructing the speaker opening, the user interacts with the device through the microphone and controller system, which electronically adjusts the output volume based on detected environmental conditions.
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 device automatically adjusts volume to minimize distractions in quiet areas and ensures notifications are heard, even when obstructed or distant from the user, enhancing user experience by maintaining sound awareness without manual control.
Implementation Method 1
outputting a sound output event through a speaker
Implementation Method 2
a level of an input sound received via a microphone
Data Source
AI summary
An electronic device is provided. The electronic device may output a sound output event through a speaker at an output volume, generate a predicted input waveform based on the output sound event, compare a level of an input sound received via a microphone with a predicted level of the predicted input waveform, determine when a level of the input sound is lower than a threshold value for a predetermined time, and control the output volume of the sound output event when the level of the input sound is lower than the threshold value for the predetermined time.