CORPORA from CSLU: Cellular words and phrases
OHSU # 0681-D
The Cellular Words and Phrases Corpus consists of utterances gathered from callers who were using cellular telephones. Each caller listened and responded to a series of pre-recorded prompts from a fixed protocol. There are 346 callers represented in this corpus.
The data were recorded from an analog line using a Gradient Technologies analog-to-digital conversion box. The .wav file format used for this corpus is the RIFF standard file format. This file format is 16-bit linearly encoded.
There are five top-level directories in this distribution: docs, speech, trans, labels, and misc. The docs directory contains assorted documentation files; the misc directory contains archival material and, possibly, scripts and tools; the labels directory contains time align phoneme labels.
The speech and trans directories contain the data files, which have the following name structure:
## = call number
yyyyy = utterance code
zzz = file extension (txt/wav)
This utterance is from caller 49 and should contain the word "Yes".
A corresponding transcription can be found in the file: CEcall-49.yes. txt
These audio and text files are subdivided into directories based on their call number div 10. So, these files would be found in /cwp/speech/4 and /cwp/trans/4, respectively.
The Center for Spoken Language Understanding (CSLU) distributes corpora to commercial entities and academic institutions for a fee. Commercial entities can use these corpora for research but also for creating commercial products such as generating acoustic models for speech recognition.
The text transcriptions were performed according to the non time-aligned word-level conventions described in the CSLU Labeling Guide.
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