Wireless Voice Transmission with Automatic Channel Quality Tuning

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Solution Overview

Problem

Existing voice transmission methods struggle to ensure clear and unambiguous reception of voice messages, particularly in environments with ambient noise and interference, without requiring manual adjustments or physical connections between devices.

Innovation Solution

A transmission method and arrangement that utilize a signal processing unit and radios to automatically adjust transmission parameters based on a quality measurement, allowing voice messages to be transmitted clearly over wireless channels with minimal interference, even when devices are from different manufacturers.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If automatic parameter adjustment is implemented to improve voice message clarity in noisy environments, then voice message reception quality is improved, but device complexity increases

Engineering Contradiction:

Improvevoice message reception qualityVSAvoidtransmission arrangement complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The transmission arrangement automatically measures transmission channel quality and adjusts its own parameters without external intervention. The system performs self-diagnosis and self-optimization by evaluating the quality of received voice messages and autonomously modifying transmission parameters to improve reception clarity in noisy environments.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The system measures the quality of the transmission channel by evaluating received voice messages and uses this feedback to automatically adjust transmission parameters. The quality measurement results are fed back to the parameter adjustment mechanism, creating a closed-loop control system that continuously optimizes voice message transmission.

Inventive Principle:

Principle #23Feedback

2Reliability

If transmission parameters are manually adjusted to optimize voice message clarity, then voice message reception quality is improved, but ease of operation deteriorates

Engineering Contradiction:

Improvevoice message reception qualityVSAvoidoperational simplicity

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The transmission arrangement autonomously performs parameter optimization without requiring user intervention. The system automatically measures transmission quality and adjusts parameters, eliminating the need for users to manually configure complex transmission settings while maintaining optimal voice message clarity.

Inventive Principle:

Principle #25Self-service

3Reliability

If physical connections between devices are required to ensure transmission quality, then voice message reception quality is improved, but ease of operation deteriorates

Engineering Contradiction:

Improvevoice message reception qualityVSAvoiddevice connectivity simplicity

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The patent replaces physical cable connections with wireless radio transmission. The transmission arrangement uses radio waves to transmit voice messages between devices, eliminating the need for physical connectors while maintaining transmission quality through automatic parameter optimization and quality measurement.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

4Reliability

If high bandwidth is used to maintain audio quality, then voice message clarity is improved, but loss of energy increases

Engineering Contradiction:

Improveaudio qualityVSAvoidtransmission energy consumption

Core Design Contradiction:

ReliabilityVSLoss of energy

Solution Approach 1:

The transmission arrangement dynamically adjusts bandwidth allocation based on measured transmission quality and environmental conditions. The system optimizes the balance between audio quality and energy consumption by adapting bandwidth usage to actual transmission needs rather than consistently using high bandwidth.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system changes transmission parameters including bandwidth allocation based on quality measurements and environmental factors. By dynamically modifying these parameters, the system maintains acceptable audio quality while reducing energy consumption when full bandwidth is not necessary.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentEP4482132B1Method and arrangement for communicating a voice message

Publication Date: 2026.03.04 DRAGER SAFETY AG & CO KAAA

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AI summary

The invention relates to a transmission method and a transmission arrangement capable of transmitting a voice message from a transmitter-side voice input unit (6) to a receiver-side voice output unit (13). The input voice message (SN.E) is converted into a voice message signal (SS.E), the voice message signal is transmitted via a transmission channel (Ü), and the transmitted voice message signal (SS.A) is converted back into a voice message (SN.A) and output by a receiver-side voice output unit (12). The transmission channel (Ü) comprises a signal processing unit (20, 21), a transmitter-side radio device (7), and a receiver-side radio device (17). Prior to transmission, an adjustment procedure is performed in which a measuring and adjustment unit (22) generates a test signal (TE), which is transmitted in the transmission channel (Ü) and then transmitted back to the measuring and adjustment unit (22).The measuring and adjustment unit (22) evaluates the quality of the transmission channel (Ü) and, if necessary, changes a parameter value (PW) of the signal processing unit (20, 21). The two radio devices (7, 17) do not require adjustment.