Resource: Japanese Kids Speech database (Upper Grade)

Reference Japanese Kids Speech database (Upper Grade)
Date of Submission Oct. 8, 2020, 5:21 p.m.
Status accepted
ISLRN 846-295-092-462-7
Resource Type Primary Text
Media Type Audio
Language Japanese
Size 145.40 hours

The Japanese Kids Speech database (Upper Grade) contains the total recordings of 232 Japanese Kids speakers (104 males and 128 females), from 9 to 13 years’ old (fourth, fifth and sixth graders in elementary school), recorded in quiet rooms using smartphones. This database may be combined with the Japanese Kids Speech database (Lower Grade) also available in the ELRA Catalogue under reference ELRA-S0411.

Number of speakers, utterances and duration, age are as follows :
Number of speakers 232 (104 male/128 female)
Number of utterances (average): 385 utterances per speaker
Total number of utterances: 89,454
Age: from 9 to 13 years' old
Total hours of data: 145.4

1018 sentences were used. Recordings were made through smartphones and audio data stored in .wav files as sequences of 16KHz Mono, 16 bits, Linear PCM.

・Audio data: WAV format, 16KHz, 16bit, mono (recorded with smartphone)
・Recording scripts: TSV format(tab-delimited), UTF-8 (without BOM)
・Transcription data: TSV format(tab-delimited), UTF-8 (without BOM)
・Size: 16.2GB

Number of speakers per age:
9 years' old: 56 (21 male, 35 female)
10 years' old: 71 (30 male, 41 female)
11 years' old: 65 (28 male, 37 female)
12 years' old: 38 (24 male, 14 female)
13 years' old: 2 (1 male, 1 female)

Structure of database:
├─ readme.txt
├─ Japanese Kids Speech Database.pdf Description document of the database
├─ Transcription.tsv Transcription
├─ scripts.tsv Script

└─ voices/ directory of audio data
├─ high/ directory of upper grade
└─(speaker_ID/) directory of speaker ID (six digits)
└─(audio_file) audio file (WAV format, 16KHz, 16bit, mono)

File naming conventions of audio files are as follows:
Field number | Contents | Description | Remarks
0 | Language ID | “JA” (fixed) | Japanese
1 | Speaker ID | Six digit | 5XXXXX
2 | Script ID | HXXXX | XXXX: four digits
3 | Age | Two digits
4 | Gender | M: male, F: female

Filed separation character is “_”.
For example, if the audio file name is “JA_500002_H0001_10_F.wav, this file has the following meaning:
JA: Language ID (Japanese)
500002: speaker ID
H0001: script ID
10: age (ten years old)
F: gender (female)

Version 1.0
Distributor ELRA