1. Introduction  
2. Data and Method  
2.1 Data  
2.2 Perceptual Evaluation  
2.3 Quality of ASR Transcriptions  
2.4 Sentiment Analysis  
2.5 Topic Modelling  
3. Results and Discussion  
3.1 Speech and Text Input Comparison  
3.2 Perceptual Evaluation  
3.3 Quality of ASR Transcriptions  
3.4 Sentiment Analysis  
3.5 Topic Modelling  
4. Conclusion