Our voice is unique. However, with digital technology's advent and the
proliferation of technologies such as DEEPFAKE AUDIO, the voice can now be
synthesized, modified, and recognized.
Unfortunately, nowadays, one of the necessary means of witness protection
used in all news reports and criminal cases remains the voice modification
by linear effects existing on the market, such as
the "pitch" effect: a transformation of the tone of a processed
These working methods date back to the analog era. Today, simple inverse
functions are available on the internet. That research access to a
signal's spectral representation, the equivalent of a
reverse all existing audio effects.
These methods have become
obsolete and dangerous and do
not guarantee the anonymity of witnesses.
A protection flaw that few official services, especially the Justice, seem
In concrete terms, if we take an example of spectral representation, the
analysis before and after the pitch
does not modify the fundamentals of the signal.
Spectral representation of the original voice:
Spectral representation of the "pitched" voice:
No modification is observed.
This confirms the NON-PROTECTION of the voice of the witnesses by simple
treatment of "pitch"
or other linear effects.
Based on this observation, which we are not the only ones to denounce*,
after four years of research and development with specialized researchers
and the support of RIAM, CNC, BPI, and INRIA,
SWEALINK offers the only secure protection for the voice of witnesses, a plug-in under the name VOX PROTECT.
As proof of its irreversibility, if we compare the original voice and
the voice processed by VOX PROTECT, we can see that the signal has
indeed undergone essential transformations, thus protecting the witness from
a voice recognition by the analogy of signals.
Voice processed by the VOX PROTECT software:
VOX PROTECT is the only software that protects the witness, the plug-in
user, and the software itself
by its innovative operating model.