MASSACHUSETTS INSTITUTE OF TECHNOLOGY (20240428808). Method and System for Data-Hiding Within Audio Transmissions
Method and System for Data-Hiding Within Audio Transmissions
Organization Name
MASSACHUSETTS INSTITUTE OF TECHNOLOGY
Inventor(s)
Ishwarya Ananthabhotla of Cambridge MA (US)
Neil Gershenfeld of Cambridge MA (US)
Method and System for Data-Hiding Within Audio Transmissions
This abstract first appeared for US patent application 20240428808 titled 'Method and System for Data-Hiding Within Audio Transmissions
Original Abstract Submitted
a method for hiding data within cover audio uses a set of sample codebook waveforms that are each assigned a unique representative digit value. a hidden data sequence representing the data is formed from the waveforms by concatenation of the waveforms assigned to the digit values of the data. the sequence is superimposed upon segments of the cover audio at a fractional amplitude. after transmission, the received signal is decompressed if necessary, the hidden data sequence is recovered from the cover audio, and the data is recovered from the hidden data sequence. this may be done by recovering the locations of the codebook waveforms and interpolating the time markers of the locations. the recovered data may be cleaned up by using estimated distances between successive cross-correlations to discard extraneous correlation peaks and sequence recurrence to probabilistically delete overlapping correlation peaks.
