High privacy DSP-based audio anonymization with audio segmentation and randomization

An electronic device comprising a non-transitory computer-readable medium and a processor for generating an anonymized audio output, the non-transitory computer-readable medium comprising instructions, which upon being executed by the processor, configure the processor to:

• acquire an original audio input, the original audio input being an audio recording of a speaker;
• stochastically determine a base pitch value based on at least a first probabilistic function;
• segment the original audio input into a plurality of audio segments, each of the plurality of audio segments being associated with a respective pitch;
• for a first audio segment from the plurality of audio segments:
• generate a first pitch adjustment value using a combination of a first value and the base pitch value, the first value being determined using a second probabilistic function, wherein the first value comprises a random shift value that shifts the base pitch value up or down within a fixed pitch range for the first audio segment, the fixed pitch range being selected such that pitch-shifting distortion does not impact interpretability of the original audio;
• generate a first adjusted audio segment by adjusting a first pitch of the first audio segment using the first pitch adjustment value, the first adjusted audio segment having a first adjusted pitch that is different from the first pitch;
• generate the anonymized audio output using the first adjusted audio segment.