This is the audio exerpt of bʲ spoken within a word. It may sound a little short or unclear, but that's exactly how it's in the real context. For more details, read the below explanation of pronunciation and listen example words that contain bʲ by pressing the word buttons.
1. Break the airflow by closing your lips.
2. Follow the interruption with a sudden and audible release of the air.
3. Vibrate your vocal cords.
4. Additionally raise the central part of your tongue to make the sound softer.