That corpus was frequently used some time ago for performing automatic speaker recognition tests/system evaluations. Today, however, there are more challenging

That corpus was frequently used some time ago for performing automatic speaker recognition tests/system evaluations. Today, however, there are more challenging corpora, like those provided by NIST for its bi-annual speaker recognition evaluations (http://www.nist.gov/itl/iad/mig/sre10.cfm http://www.nist.gov/itl/iad/mig/sre10.cfm). These provide more mismatch conditions which require more advanced channel compensation mechanisms.