Dynamic CODEC Selection for Battery-Powered Voice Devices
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Solution Overview
Problem
Communication devices powered by battery supplies face abrupt call termination due to high power consumption when using high-sampling-rate CODECs, especially when battery levels are low, leading to reduced usability and talk-time.
Innovation Solution
A method and apparatus that selectively limit the availability of high-sampling-rate CODECs when battery power is depleted, allowing only lower-sampling-rate CODECs to operate, thereby reducing battery depletion and extending device operability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a high-sampling-rate CODEC is used to improve voice quality, then voice quality is improved, but power consumption increases significantly
Solution Approach 1:
The system dynamically adjusts the sampling rate of the CODEC based on battery power levels. When battery power is sufficient, high-sampling-rate CODECs are used for optimal voice quality. When battery power falls below a threshold, the system switches to low-sampling-rate CODECs to reduce power consumption, thereby resolving the contradiction between voice quality and power consumption through adaptive, dynamic operation.
Solution Approach 2:
The invention changes the operational parameters of the CODEC by switching between different sampling rates (e.g., 8kHz vs. 16kHz) based on power availability. This parameter change allows the system to optimize the trade-off between voice quality and power consumption, directly addressing the technical contradiction by adjusting the key operational parameter according to power conditions.
2Measurement precision
If a high-sampling-rate CODEC is used to improve voice quality, then voice quality is improved, but talk-time is reduced
Solution Approach 1:
The system dynamically adjusts the sampling rate based on remaining battery capacity. When power is abundant, high-sampling-rate CODECs provide optimal voice quality. When battery levels drop below a threshold, the system transitions to low-sampling-rate CODECs to extend talk-time, thus resolving the contradiction between voice quality and duration through adaptive operation.
Solution Approach 2:
The system performs preliminary assessment of battery power levels and proactively adjusts CODEC selection before power depletion becomes critical. By continuously monitoring power status and preemptively switching to power-efficient modes when thresholds are approached, the system extends overall talk-time while maintaining acceptable voice quality throughout the conversation.
3Measurement precision
If a high-sampling-rate CODEC is used to improve voice quality, then voice quality is improved, but the likelihood of call termination increases
Solution Approach 1:
The system dynamically adapts the CODEC sampling rate based on real-time battery power monitoring. When power levels are sufficient, high-sampling-rate CODECs are used for optimal voice quality. When power falls below a predetermined threshold, the system switches to low-sampling-rate MODEs to prevent power depletion and avoid call termination, thereby resolving the contradiction between voice quality and call stability through adaptive operation.
Solution Approach 2:
The system implements continuous feedback monitoring of battery power levels and adjusts CODEC operation accordingly. This feedback mechanism ensures that the system maintains voice quality when power is available while automatically reducing power consumption when power thresholds are breached, preventing call termination and improving overall call reliability.
4Use of energy by moving object
If a low-sampling-rate CODEC is used to reduce power consumption, then power consumption is reduced, but voice quality deteriorates
Solution Approach 1:
The system dynamically selects between high and low sampling rate CODECs based on available battery power. When power is sufficient, it operates at high sampling rates for optimal voice quality. When power falls below a threshold, it switches to low sampling rates to minimize power consumption, thus resolving the contradiction by making the trade-off adaptive rather than static.
Solution Approach 2:
The system preliminarily assesses battery power status and pre-determines the appropriate CODEC mode before voice quality degradation becomes significant. By monitoring power levels continuously and switching modes proactively, the system maintains acceptable voice quality throughout the conversation while minimizing overall power consumption through strategic mode selection.
Data Source
AI summary
An apparatus and an associated method for facilitating selection of CODEC availability from amongst a set of CODECs at a communication device. A battery power measurer measures the stored energy level of a battery power supply that powers a communication device of which the CODEC forms a portion. A selector selects the available CODECs responsive to the measured power level. If the measured level is less than a threshold, then high-sampling-rate CODECs are at least selectably made unavailable for use. If the battery level is higher than the threshold, then the high-sampling-rate CODECs are made available for use. If the level is greater than a threshold then both a high sampling-rate and the low sampling-rate CODEC are available. An indication generator generates an indication of selection made by the selector.