357 hours of Korean speech data collected by cellphone, recorded by 999 Korean in quiet environment and rich in content. All texts are transtribed by professional annotator. The accuracy rate of sentence is 95%. It can be used for speech recognition, machine translation and voiceprint recognition. Format:16kHz, 16bit, wav, mono channel Recording Environment:Quiet room Recording Content:Common sentences Speaker:999 people from Korea, 53% of which are female Language:Korean Transcription content:Text Application Scenario:speech recognition, voiceprint recognition Accuracy:95% accuracy for sentences Device:Android mobile phone, iPhone