1. Use App "Ocean Speech" to record.
2. Each person can do 400 qualified recording at most.
3. (IMPORTANT)Record in a natural and smooth way of speaking,
4. The environment is quiet
Suggest that mouth and the mic should be kept at about 15cm.
Mouth must not direct to mic to avoid blow in mic,or in recording it sounds like wind sound or breath sound. Also avoid echo (Big empty room will cause echo)
5. Suggest to stay away from home applicance and fans , since magnetic fields can also cause current noise
Disqualified standard:
1. Not record in a natural and smooth way of speaking, imitating normal conversation.
2. Not native speaker
3. Blow in mic.
4. Abvious noise in backgroud