External Audio Recorder Loopback for Private Call Recording
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Solution Overview
Problem
Existing client devices lack the capability to record audio during calls and video conferences, and existing recording software requires complex setups, is costly, and compromises privacy due to third-party connections.
Innovation Solution
An audio recorder that connects to client devices via USB or Lightning interfaces, processes audio signals using a digital signal processor, and loops back the processed audio for local recording, enabling simple, convenient, and reliable audio mixing and recording.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If recording software is used to record calls and meetings, then audio recording capability is achieved, but device complexity and setup complexity increase
Solution Approach 1:
The patent introduces an intermediary recording device that connects between the client device and the call/audio source. This intermediary device handles all recording processing, requiring no software installation or complex setup on the client device. The device simply plugs into the audio output and automatically records, eliminating setup complexity while maintaining reliable recording capability.
2Reliability
If third-party connections are used for audio recording, then recording functionality is enabled, but costs increase and privacy is compromised
Solution Approach 1:
The patent extracts the recording functionality from third-party services and client device software, implementing it entirely within a standalone hardware device. This eliminates the need for third-party connections, prepaid numbers, or cloud services, thereby removing associated costs and privacy risks while maintaining reliable recording functionality through local processing.
3Reliability
If existing recording methods are used, then audio can be recorded, but start-up time is slow and convenience is reduced
Solution Approach 1:
The patent implements preliminary action by having the recording device ready to use immediately upon plugging in. All processing capabilities are pre-loaded in the hardware, requiring no software installation, configuration, or initialization. The device is in a ready state before connection, enabling instant start-up and eliminating time loss associated with software-based recording solutions.
4Object-affected harmful factors
If client devices process audio locally, then privacy is maintained, but client devices lack recording capability
Solution Approach 1:
The patent applies self-service by designing a standalone recording device that performs all recording functions independently without requiring client device processing capabilities. The device contains its own processing unit, storage, and control systems, enabling it to service the recording function entirely on its own. This maintains privacy through local processing while providing reliable recording capability without depending on client device features.
Data Source
AI summary
Disclosed herein are systems and methods for mixing and recording calls on mobile devices and computers using an external audio recorder. In one example, an audio recorder can include a connector configured to connect to a client device, a microphone module, and a digital signal processor configured to process input audio signals received from the client device via the connector and from the microphone module. The audio recorder can be configured to receive a first input audio signal from the client device via the connector, receive a second input audio signal from the microphone, process the first and second input audio signals using the digital signal processor to generate an output audio signal, and loop back the output audio signal back to the client device.