| Item Name: | FFMTIMIT |
| Authors: | John S. Garofolo, Lori F. Lamel, William M. Fisher, Jonathan G. Fiscus, David S. Pallett, Nancy L. Dahlgren, and Victor Zue |
| LDC Catalog No.: | LDC96S32 |
| ISBN: | 1-58563-090-X |
| Data Type: | speech |
| Sample Rate: | 16000 Hz |
| Sampling Format: | 1-channel pcm |
| Data Source(s): | microphone speech |
| Application(s): | speech recognition |
| Language(s): | English |
| Language ID(s): | ENG |
| Distribution: | 1 CD |
| Member fee: | $0 for 1996 members |
| Non-member Fee: | US $250.00 |
| Reduced-License Fee: | US $250.00 |
| Extra-Copy Fee: | US $250.00 |
| Non-member License: | yes |
| Readme File: | yes |
| Online documentation: | yes |
| Licensing Instructions: | Subscription Members, Standard Members, Non-Members |
| Citation: | John S. Garofolo, et al. 1996 FFMTIMIT Linguistic Data Consortium, Philadelphia |
| The FFMTIMIT corpus contains the previously unreleased secondary
microphone waveforms for the TIMIT Acoustic-Phonetic Continuous Speech
corpus. The primary microphone waveforms, which were recorded using a
close-talking noise-cancelling head-mounted Sennheiser microphone
(model HMD-414), are available from the LDC on NIST Speech Disc 1-1.1
(LDC93S1). The secondary microphone used in the recording
of the TIMIT corpus was a Breul & Kjaer 1/2" free-field microphone (model
4165).
While the Sennheiser microphone recordings are relatively "clean" with respect to non-speech noise, the FFMTIMIT recordings includes significant low frequency noise, which was due to the HVAC system and mechanical vibration transmitted through the floor of the double-walled sound booth used in recording. Because it is noiser than its TIMIT counterpart, the data of FFMTIMIT may be used in the development of more noise-robust speech recognition systems. In addition, this data may be of value to researchers involved in vocal tract modeling because the B&K microphone has extremely flat free-field frequency response and calibration tones are provided. Note that the B&K TIMIT data contained with this release has not been processed through any highpass filter, (e.g., the 1,581-point filter described in the paper "The DARPA Speech Recognition Research Database" by Fisher, Doddington and Goudie-Marshall in "DARPA TIMIT Acoustic-Phonetic Continuous Speech Corpus CD-ROM," NISTIR 4930 / NTIS Order No. PB93- 173938.) Content Copyright | |
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