field,type,description,example
id,string,Stable clip identifier,inzwi_sn_0001
audio,string,Relative path to the 16 kHz mono WAV,data/train/inzwi_sn_0001.wav
text,string,Ground-truth transcript (= the read prompt),Madomasi
language,string,ISO 639-1 language code,sn
dialect,string,Shona dialect,zezuru
type,string,word | sentence,word
speaker_id,string,Pseudonymous speaker reference (no PII),SPK04
gender,string,Optional self-reported gender (male|female); null if not provided,female
age_range,string,Optional self-reported age band; null (not provided in this slice),
duration_seconds,float,Released clip length in seconds,1.08
sample_rate,integer,Sample rate (Hz),16000
channels,integer,Audio channels (mono=1),1
audio_format,string,Container of the released audio,wav
file_size_bytes,integer,Released WAV file size,34768
avg_volume_db,float,Mean signal level (dBFS),-11
peak_volume_db,float,Peak signal level (dBFS),0
silence_percentage,float,Proportion of silence in the clip (%),0
has_clipping,boolean,Whether hard clipping was detected,true
noise_level,string,Categorical noise assessment (low|medium|high),low
device_type,string,Capture device / channel,whatsapp
emotion,string,Optional expressed-emotion tag; null if none,
validation,string,Validation state,peer-validated
validation_score,float,Reviewer quality score 0-1; null if unscored,1
status,string,Lifecycle status,validated
collected_at,date,Collection date (ISO 8601),2026-06-21