To help an infant focus on a sound, that sound should:

To help an infant focus on a sound effectively, it is beneficial for that sound to have a clear beginning and an end. This characteristic aids in capturing the infant's attention as they can recognize the onset and offset of the auditory stimulus, making it easier for them to track and respond to the sound. Infants are naturally drawn to sounds that have distinct changes, as it helps them differentiate and process auditory information more effectively.

While continuous sounds can also engage infants, having a defined beginning and end supports their developing cognitive and auditory skills. This setting allows infants to practice their listening skills and learn about timing and rhythm in sounds. Familiar sounds that are modulated in intensity or tone can also foster further interest and help in their sensory development.

Sounds that are too loud may lead to discomfort or anxiety, and those that only consist of low frequencies may not provide the necessary auditory stimulation for infants to engage with their environment fully. Recognizing sounds with varied pitches, tones, and rhythms is important for their overall auditory development and aids in their communication skills as they grow.