The b and v sounds in English are often confused by English language learners because they are produced in a similar way. Both sounds are made with the lips coming together, but there is a subtle difference in the way they are pronounced.
To produce the b sound, the lips are brought together and the vocal cords are held tight while the sound is made. This creates a short burst of sound that is relatively easy to distinguish from other sounds. The b sound is voiced, meaning that the vocal cords vibrate when it is produced.
The v sound is also made with the lips coming together, but the vocal cords are not held tight. This allows for a smoother and more continuous sound to be produced. The v sound is also voiced, meaning that the vocal cords vibrate when it is produced.
One way to distinguish between the b and v sounds is to pay attention to the sound of the voiced consonant. The b sound is a short, bursty sound, while the v sound is a smooth, continuous sound. Another way to distinguish between the two sounds is to pay attention to the position of the lips. For the b sound, the lips are brought together tightly, while for the v sound, the lips are brought together more gently.