The growing risk of privacy violation and espionage associated with the rapid spread of
mobile communications renewed interest in the original concept of sending encrypted voice …

This paper details a novel distortion-tolerant speech encryption scheme for securing voice
communications over digital voice-specific channels such as 3G/4G or VoIP voice calls. The …

The increasing need for privacy-preserving voice communications is encouraging the
investigation of new secure voice transmission techniques. This paper refers to the original …

Increasing need for secure voice communication is leading to new ideas for securing voice
transmission. This work relates to a relatively new concept of sending encrypted speech as …

This paper presents a comprehensive review of voice encryption techniques, focusing on
the various methods and algorithms developed to secure voice communication. Voice …

Motivated by an increasing need for privacy-preserving voice communications, we
investigate here the original idea of sending encrypted data and speech in the form of …

A highly secure voice encryption system is described. Digitized voice is combined with a
pseudo random bit stream resulting in a third bit stream not related to original information …

A novel voice communication scheme is presented which assures security in voice
communication well beyond any encryption-based method in use today. The scheme is …

Speech coding for secure mobile communication is a challenging task since encrypting the
digitized speech signal adds overheads and randomizes the bit stream to a level where …

In this paper, multilayer cryptosystems for encrypting audio communications are proposed.
These cryptosystems combine audio signals with other active concealing signals, such as …