TSOV is a combination of sound and art of the teaching device, TSV through speech recognition, each child issued sound lines into a different color, after each class, the product will automatically according to the volume of children issued by the volume, tone, sound quality, resonance and sound length of different paintings, children can view their voice in the product screen in the picture recorded situation. Let your child gradually improve the situation of yelling or insufficient volume, and train your Childs ability to express sentences completely.
