If you want to make TV speech sound better, especially when there's background noise, Mimi is a good option. Mimi's personalized audio technology is based on research from audiology experts and is built into TVs, headphones and speakers. It processes audio in real time to make it sound better and easier to understand, and it's geared for people who want better TV sound when there's background noise.
Another good option is Krisp, an AI-powered meeting assistant that cuts background noise, records, transcribes and summarizes conference calls and videoconferences. It's geared for online meetings, but Krisp's noise cancellation technology can help you understand people better when there's background chatter, so it's a good option if you want to improve audio in general.
If you're in the audio production business, ai|coustics has more powerful background noise removal and echo cancellation technology. It works with all languages and accents and is good for podcasting, video editing and e-learning. It's got features like dynamic noise removal and smart volume leveling to try to ensure the best possible sound.