If you want to measure the emotional response of your audience, you can start by choosing a method and tool that fits your presentation. Design a survey or poll, or set up a facial expression or physiological signal system, and make sure you have the consent and cooperation of your audience. Then deliver your presentation, and monitor the emotional response during or after. Collect and analyze the data, and use it to evaluate, adapt, and learn from your presentation. Repeat the process for each presentation to compare the data. Measuring the emotional response can help you improve your presentation skills, create a connection with your listeners, build trust, and persuade them to take action. Moreover, you can use the data to evaluate your performance, adapt your delivery, and learn from feedback. To hone your skills further, set clear and realistic goals, seek feedback and mentoring, and experiment and test. So what are you waiting for? Start measuring the emotional response of your audience today!