Multi-input PTT Switch with Spatial Audio Positioning
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Solution Overview
Problem
Users monitoring multiple audio communications channels experience cognitive overload due to the inability of traditional methods to effectively separate and spatially position more than two simultaneous audio streams, leading to mental fatigue and difficulty in identifying unique audio sources.
Innovation Solution
A multi-audio input, stereo audio output push-to-talk (PTT) switch device that applies unique head-related transfer functions (HRTFs) to spatially position each incoming audio stream, creating a user perception of distinct spatial origins for each stream, allowing for better separation and prioritization of audio sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional audio separation methods are used to separate two incoming audio streams into left and right ear, then the audio channels are clearly separated, but when faced with three or more audio sources, the audio channels are mixed together and the user experiences cognitive overload
Solution Approach 1:
The patent extends the traditional two-channel stereo separation into a three-dimensional spatial audio field. Instead of merely assigning audio streams to left and right ears, the system positions multiple audio sources in a 3D spatial environment around the user, allowing the brain to naturally separate and identify multiple streams based on their spatial locations, thus solving the limitation of handling only two audio sources
2Device complexity
If multiple audio streams are mixed into one or both ears, then the device complexity is reduced, but the user experiences mental fatigue and difficulty in identifying unique audio sources
Solution Approach 1:
The patent segments multiple audio streams into distinct spatial positions in a three-dimensional audio field. Each audio source is assigned a unique spatial location, allowing the user to mentally compartmentalize and identify individual streams without the complexity of complex channel separation algorithms. This segmentation approach maintains system simplicity while dramatically improving source identification
Data Source
AI summary
Various embodiments provide a multi-audio input, stereo audio output, push-to-talk (PTT) switch device. The device may include an audio processing unit configured to perform spatial separation/positioning for one or a plurality of audio sources. The audio processing unit of the device may apply unique head-related transfer functions (HRTFs) to produce left and right audio outputs that correspond to predetermined or dynamically positioned spatial locations for each of the incoming audio streams.