One might find voice samples being requested by the government in street crime cases, especially ones where the accused is thought to have made a threatening telephone call or a statement at the scene of the crime.  But in a white collar case? 

Yes, AP reports here that a judge has allowed the government to obtain voice samples from three individuals charged in the "theft of trade secrets from The Coca-Cola Co." case. This case originates when Pepsi turned over evidence to Coca-Cola that someone was trying to sell them alleged trade secrets.

In the case of United States v. Dionisio, 410 U.S. 1 (1973), the Supreme Court held that requiring a grand jury witness to produce voice exemplars would not violate constitutional rights under the Fourth and Fifth Amendments.

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