The project was a joint effort among the Massachusetts Institute of Technology, SRI International, and Texas Instruments. The speech was recorded at TI using a Sennheiser head-mounted microphone in a quiet environment, digitizing the speech at a 20 kHz sampling rate and then downsampling to 16 kHz for distribution. All of the phonetic transcriptions have been hand verified and approximately 2 percent of the phonetic labels have been changed from earlier releases. New test and training subsets have been selected and specified. These subsets are balanced for phonetic and dialectal coverage.
Online documentation provides a description of the tabular computer-searchable information.
Specify the NIST Speech Disc 1-1.1, NTIS Order No.