Remote Audio Muting via Sound Card Loopback
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Solution Overview
Problem
Current remote access systems allow video data to be transmitted to the remote computer, but associated audio is output only at the host computer, potentially annoying individuals nearby, and require the installation of a virtual sound card driver to mute audio, which is costly and inconvenient.
Innovation Solution
The system automatically mutes the audio output at the host computer and captures it via a loopback input line, transmitting it to the remote computer for output, eliminating the need for a virtual sound card driver and ensuring audio is only heard by the remote user.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a virtual sound card driver is installed to mute audio at the host computer, then audio can be transmitted to the remote computer, but the system complexity and cost increase
Solution Approach 1:
The patent extracts the audio capture function from the complex virtual sound card driver concept and implements it using the built-in loopback capability of the sound card hardware. This removes the need for additional virtual driver software while maintaining the audio transmission function.
Solution Approach 2:
The sound card's loopback input line enables the system to capture its own audio output automatically. The host computer's audio system serves itself by routing its output back through the loopback line to the remote computer, eliminating the need for external virtual drivers.
2Reliability
If a virtual sound card driver is installed to capture and transmit audio, then remote audio output is enabled, but installation cost and security risks increase
Solution Approach 1:
The system uses the sound card's inherent loopback functionality, which is a built-in feature of the hardware. This self-contained capability eliminates the need for installing additional virtual drivers, reducing both cost and security risks while maintaining audio capture functionality.
3Ease of operation
If manual muting steps are taken by the user, then audio can be controlled, but user awareness and willingness are required
Solution Approach 1:
The system performs preliminary configuration by establishing the loopback audio capture path in advance through software integration. This preliminary setup enables automatic audio muting and transmission without requiring users to take manual actions during operation.
Solution Approach 2:
The remote access software integrates multiple functions including audio capture, audio transmission, and automatic muting control into a single unified system. This multi-functionality eliminates the need for separate manual muting operations by the user.
Data Source
AI summary
A first computer is remotely accessed by a second computer. Sound output is generated at the first computer, but is selectively muted at the first computer and transmitted to, and output at, the second computer.