Voice Quality Detection via Tone Data Comparison
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Solution Overview
Problem
Communication transmitting apparatuses struggle to determine quality degradation of voice data after arithmetic processing, such as codec conversion and echo cancellation, which affects voice audibility during telephone conversations.
Innovation Solution
Incorporating a tone data storage unit, an adding unit, an arithmetic processing unit, a separating unit, and a comparison determination unit to add unique tone data to voice data, convert it, separate the tone data, and compare pre- and post-conversion tone data to determine quality degradation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If arithmetic processing (codec conversion, echo cancellation) is performed on voice data, then communication compatibility and echo suppression are improved, but voice quality degradation occurs and cannot be determined
Solution Approach 1:
The patent introduces tone data as an intermediary reference signal that passes through the arithmetic processing unit. This tone data serves as a mediator to indirectly measure the impact of codec conversion and echo cancellation on voice quality, enabling quality determination without directly analyzing the processed voice data.
Solution Approach 2:
The patent creates a copy of the original tone data and compares it with the processed tone data after arithmetic processing. By copying the reference tone data through the same processing path and comparing pre- and post-processing versions, the system can detect quality degradation caused by the arithmetic processing operations.
2Adaptability or versatility
If arithmetic processing is performed to enable codec conversion between different formats, then communication versatility is improved, but voice data quality degradation occurs
Solution Approach 1:
Tone data acts as an intermediary reference that traverses the codec conversion process. By comparing the original tone data with the converted tone data, the system can assess the quality impact of codec format conversion without compromising the actual voice communication versatility.
Solution Approach 2:
The patent changes the parameter being measured from the complex voice data to the simpler tone data. This parameter substitution allows for easier and more accurate quality assessment of codec conversion effects, as tone data provides a controlled reference that isolates the conversion impact from variable voice content.
3Object-generated harmful factors
If echo cancellation processing is performed to suppress echo components, then communication clarity is improved, but voice quality degradation occurs and remains undetectable
Solution Approach 1:
The tone data serves as an intermediary that passes through the echo cancellation processing unit. By comparing the original tone data with the processed tone data, the system can detect any quality degradation introduced by echo cancellation without interfering with the actual echo suppression function.
Solution Approach 2:
The system uses the tone data to self-assess the quality impact of echo cancellation processing. The tone data automatically traverses the processing path and provides its own processed version for comparison, enabling the system to self-monitor the effects of echo cancellation on voice quality.
Data Source
AI summary
A communication transmitting apparatus is connected between IP telephones, and includes a tone storage unit configured to store tone data T that is unique, an adding unit configured to add the tone data T to the voice data V transmitted from the IP telephone to generate addition data, an arithmetic processing unit configured to convert a format of the addition data according to a prescribed specification to generate converted data including converted voice data Vc and tone data Tc, a separating unit configured to separate the tone data Tc from the converted data, and a comparison determination unit configured to determine that if the tone data T added to the voice data V before conversion performed by the arithmetic processing unit is different from the tone data Tc separated from the voice data Vc by the separating unit after the conversion, there is quality degradation in the voice data Vc.