Introduction

The Japanese Electronic Industry Development Association's (JEIDA) Common Speech Data Corpus (JCSD) was prepared by Jonathan Hamaker, Richard J. Duncan and Joe Picone of the Institute for Signal and Information Processing at Mississippi State University.

Data

This collection consists of high-fidelity recordings of 150 native speakers of Japanese; each speaker produces four repetitions of 323 short prompts, including city names, control words, monosyllabic words, isolated digits and strings of four digits. Each reading session was recorded with two microphones, yielding two channels that differ in audio quality for each utterance. Channel 0 (LDC96S64) contains data recorded with a standard dynamic microphone---a Sanken MU-2C microphone. Channel 1 (LDC96S65) contains data recorded simultaneously with a condenser microphone that presumably varied from site to site and is available separately.

A summary of the size and content of the corpus is given below:

    number of speakers              150 speakers
            males                   75
	    females                 75
    range of speaker age            10 yrs. to 70 yrs.

    number of items per speaker     323 items
            isolated digits         15
	    four digit sequences    35
	    city names              100
	    monosyllables           110
	    control words (set A)   13
	    control words (set B)   24
	    control words (set C)   26

    number of repetitions per item  4 repetitions
    total number of utterances      193,763 utterances (per channel)

    sample frequency                16 kHz
    sample type                     16-bit linear
    number of microphones           2 (dynamic and condenser)
    

For purposes of publication by the LDC, the corpus has been organized onto 40 CD-ROMs; the partitioning of the data files have been done primarily by channel (20 CD-ROMs each for channel 0 and channel 1) and secondarily by category of prompts. These prompts include:

    Description                                     Number of items

    Control Words:
            Banking Services                        13
	    Word Processors                         24
	    Home Electronic Equipment               26

    Digits:
            Isolated Digits                         15
	    Four Digit Sequences                    35

    City Names:                                     100
            a phonetically-rich subset 
	    of common Japanese city names

    Monosyllables:                                  110
            all Japanese monosyllables plus 
	    several used to pronounce 
	    foreign words
    

JEIDA/JCSD-Channel 0 and JEIDA/JCSD-Channel 1 can each be ordered as complete sets. Components of the corpus can also be purchased as outlined below:

    Price   Set-of  Description				Catalog ID 
 
    2000   20      JEIDA/JCSD-Channel 0 (Complete)         LDC96S64
    600    6      JEIDA/JCSD-Channel 0 City Names         LDC96S64-1
    400    4      JEIDA/JCSD-Channel 0 Control Words      LDC96S64-2
    100    1      JEIDA/JCSD-Channel 0 Isolated Digits    LDC96S64-3
    300    3      JEIDA/JCSD-Channel 0 Four Digit Seq.    LDC96S64-4
    600    6      JEIDA/JCSD-Channel 0 Monosyllables      LDC96S64-5

    2000   5      JEIDA/JCSD-Channel 1 (Complete)         LDC96S65
    600    1      JEIDA/JCSD-Channel 1 City Names         LDC96S65-1
    500    1      JEIDA/JCSD-Channel 1 Control Words      LDC96S65-2
    100    1      JEIDA/JCSD-Channel 1 Isolated Digits    LDC96S65-3
    300    1      JEIDA/JCSD-Channel 1 Four Digit Seq.    LDC96S65-4
    600    1      JEIDA/JCSD-Channel 1 Monosyllables      LDC96S65-5
    

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