It collects 291 Korean locals and is recorded in quiet indoor environment. The recordings include economics, entertainment, news, oral, figure, letter. 400 sentences for each speaker. Recording devices are mainstream Android phones and iPhones. Format:16kHz, 16bit, uncompressed wav, mono channel Recording environment:quiet indoor environment, without echo Recording content:economy, entertainment, news, oral language, numbers, letters Speaker:291 Korean and North Korean; 159 females, accounting for 55% Device:Android mobile phone: iPhone=3.2:1 Language:Korean Transcription content:text, time point of speech data, 5 noise symbols, special identifiers Accuracy rate:95% (the accuracy rate of noise symbols and other identifiers is not included) Application scenarios:speech recognition, voiceprint recognition