Ultrasonic Audio Data Transmission Noise Resilience
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Solution Overview
Problem
Current technologies face challenges in transmitting data through ultrasonic or near-ultrasonic audio waves due to environmental noise, which causes data distortion or loss, and require specialized equipment for signal reception and demodulation.
Innovation Solution
A system and method that utilize everyday smart computing devices to transmit and receive data through ultrasonic or near-ultrasonic audio waves, employing error correction and noise reduction techniques such as spectral gating and binarization to ensure robust and error-free communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data is transmitted through ultrasonic audio waves using existing technology, then data transfer capability is achieved, but the transmission becomes vulnerable to environmental noise causing data distortion or loss
Solution Approach 1:
The patent applies error correction codes that transform the harmful effect of noise by introducing redundant bits that enable detection and correction of errors caused by environmental noise, effectively converting the presence of noise into a manageable condition through mathematical redundancy
Solution Approach 2:
The system applies spectral gating and noise reduction techniques before demodulation to pre-process the received signal and remove harmful noise components, cushioning the data transmission against environmental interference before the critical decoding stage
2Measurement precision
If specialized equipment is used for signal reception and demodulation, then data transmission accuracy is improved, but device complexity and accessibility are reduced
Solution Approach 1:
The patent enables ordinary smartphones and computing devices to perform ultrasonic data transmission and reception by utilizing their existing audio playback and recording capabilities, making the technology universal and accessible without requiring specialized equipment
Solution Approach 2:
The system uses the device's own audio hardware (speakers and microphones) that are already present for their primary purpose, making the devices self-sufficient for data transmission without needing additional specialized components
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables reliable and error-free data transmission over audio waves, resistant to noise and suitable for use with everyday smart devices, thereby providing a universally accessible method for data broadcasting, transfer, and reception.
Implementation Method 1
transmitting device to transmit data in the form of an audio signal in a near-ultrasonic or ultrasonic frequency range
Implementation Method 2
a receiving device of the transmitting device to capture the audio signal using an audio input device of the receiving device
Data Source
AI summary
The present disclosure relates to a system and method for facilitating error-free communication of data by enabling transfer of data over audio signal in near-ultra sonic frequencies with specially designed audio emitted using a mixture of frequencies to achieve maximum stability. The method may include randomized emission of data bits over a plurality of frequency ranges to allow temporal and frequency voting. The audio signal transmitted may be received by pre-processing the received audio signal to remove unused frequency bands and unwanted audio artifacts introduced during transmission. The pre-processed audio signal may be further applied with a plurality of audio processing levels to denoise, smoothen the audio signal by going through noise subtraction using unique noise profiles and spectrally gate using curated thresholds. The audio signal may be then demodulated using a unique confidence score based on the power of all the frequencies emitted to find the data transmitted.