Hearing loss can set in gradually over many years.  Some sounds get quieter, while soft and high-pitched sounds like consonants can be harder to hear.  When someone talks, you don’t hear each word clearly and thus, they seem to ‘mumble’. It may also sound like people are talking too fast because the ears didn’t pick up every sound causing the brain to take longer to put the pieces together. Having a hearing aid tuned to your specific hearing loss will allow you to hear those soft sounds that you would otherwise miss, reducing the cognitive load and frustrations.

NexGen Hearing, NexGenHearing.com