Call the cops
Question: Are the voice modulators used over the phone by kidnappers any use? Because the gadgets electronically alter the caller’s voice, is it possible to “demodulate” the signal and reveal the true voice?
Answer: As a contributor to Last Word noted recently, “humans are a social species and, as such, it is very important for an individual to express his or her feelings and emotions to fellow individuals”. Accordingly, human speech has developed into an information transmission channel of enormous capacity. At the same time, much of the information transmitted is redundant—you can distort the physical signals used and still get the essence of the message faithfully transmitted. A…
