Voice Jammer Using Segmented Audio Reordering
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Solution Overview
Problem
Conventional audio jammers fail to effectively prevent intelligible voice recordings, as they often rely on noise interference that can be overcome by advanced recording devices, particularly those using ultrasonic or infrasonic frequencies.
Innovation Solution
A method and device that record, segment, and randomly rearrange voice segments, then emit the mixed recording to prevent intelligible capture, using a processor and speaker to create a gibberish-like audio output that masks the original voices during conversation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If noise interference is used to suppress recording, then recording devices are interfered with, but advanced recording devices can overcome the interference and still capture intelligible audio
Solution Approach 1:
The voice recording is segmented into multiple time intervals, and these segments are played back in a randomly mixed order. This segmentation prevents advanced recording devices from capturing intelligible audio because the temporal structure of speech is disrupted, making it impossible to reconstruct meaningful content even with high-quality recording equipment.
Solution Approach 2:
Instead of trying to block or suppress the recording directly through noise interference, the system inverts the approach by capturing the voice and then deliberately corrupting it through random reordering of segments. This inversion transforms the problem from blocking recording to actively destroying the intelligibility of the recorded content.
2Reliability
If ultrasonic frequencies are used to create an inaudible barrier, then microphones are interfered with, but the frequencies may cause other harmful effects or be detectable
Solution Approach 1:
The system replaces the mechanical/acoustic approach of using ultrasonic frequencies with an electronic/digital approach. Instead of generating physical sound waves at ultrasonic frequencies, the system captures audio digitally, processes it through segmentation and random reordering, then plays back the corrupted audio. This substitution eliminates the harmful effects associated with ultrasonic frequencies while achieving the same goal of preventing intelligible recording.
3Reliability
If conventional noise jamming is used, then simple recording devices are suppressed, but the jamming can be easily detected and overcome
Solution Approach 1:
The system changes the fundamental parameters of the audio signal by segmenting it in time and randomizing the order of segments. This transforms the audio from a continuous intelligible signal into a discontinuous randomized sequence. The parameter change from continuous to discrete randomized segments makes the signal fundamentally different from conventional noise jamming, rendering detection and overcoming methods ineffective.
Data Source
AI summary
A method, for preventing the intelligible voice recording is provided. The voice of a subject or interlocutor is recorded for a given time interval thereby providing a voice recording. The voice recording is cut into shorter time interval segments thereby providing a set of voice recording segments. The set of voice recording segments is mixed in a randomly rearranged order. The mixed set of voice recording segments is spliced into a single randomly mixed voice recording. Emitting the randomly mixed voice recording during speaking of the subject or interlocutor prevents the intelligible recording of the voice of the subject or interlocutor.