Dual-path audio processing for simultaneous human and machine listening
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Solution Overview
Problem
Existing audio processing technologies compromise between algorithms optimized for human and machine listening, failing to effectively preprocess audio signals for both purposes simultaneously, which affects the quality of audio signals for machine recognition and human communication.
Innovation Solution
A dual uplink processing system that separates audio signals into two paths: one optimized for human listening and another for machine listening, using distinct compression and noise suppression techniques to create separate audio signals adapted for each purpose, allowing concurrent processing and transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single audio processing algorithm is used for both human and machine listening, then the device complexity is reduced, but the audio quality for both purposes deteriorates
Solution Approach 1:
The patent divides the audio processing system into two separate processing paths: a first path optimized for human listening and a second path optimized for machine listening. Each path has its own dedicated processing algorithms, allowing both to operate independently without compromising each other's performance. This segmentation resolves the contradiction by maintaining high audio quality for both purposes while accepting increased system complexity.
2Reliability
If audio signals are pre-processed for human listening, then human communication quality is improved, but machine recognition accuracy deteriorates
Solution Approach 1:
The patent creates separate processing streams where human-optimized preprocessing (including noise reduction and compression) is applied to the first audio signal path, while machine-optimized preprocessing is applied to the second audio signal path. This allows human communication quality to be improved without negatively impacting machine recognition accuracy, as each path is independently optimized for its specific purpose.
3Measurement precision
If audio signals are pre-processed for machine listening, then machine recognition accuracy is improved, but human listening quality deteriorates
Solution Approach 1:
The patent implements a second processing path dedicated to machine listening that applies algorithms optimized for speech recognition and command interpretation. This path operates independently from the human listening path, allowing machine recognition accuracy to be maximized without compromising human listening quality, as each path uses processing techniques tailored to its specific requirements.
4Manufacturing precision
If dual processing paths are implemented, then audio quality for both human and machine processing is improved, but device complexity increases
Solution Approach 1:
The patent accepts increased device complexity as necessary to achieve high audio quality for both human and machine processing. The system is divided into distinct processing paths with dedicated algorithms for each purpose, ensuring optimal performance for both applications simultaneously.
Solution Approach 2:
The patent creates a multi-functional audio processing system that can simultaneously serve both human listening and machine listening purposes. By implementing universal processing capabilities that handle both types of audio signals through separate optimized paths, the system achieves versatility without requiring separate physical devices, thereby managing complexity while maintaining high quality for both functions.
Data Source
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AI summary
In some implementations, a device for providing dual uplink processing paths may include a human listening (HL) input processing unit configured to receive an audio stream and pre-process the audio stream to create a first audio signal adapted for human listening via a first uplink processing path, a machine listening (ML) input processing unit configured to receive the audio stream and pre-process the audio stream to create a second audio signal adapted for machine listening via a second uplink processing path, and a network interface unit configured to transmit the first audio signal via the first uplink processing path and transmit the second audio signal via the second uplink processing path to a remote server.