My partner has hearing loss, so her speaking volume sometimes doesn’t match the background. Even when it’s just the two of us hand signals are useful, as they can be dropped without breaking the flow of conversation. We use basically the same as a sound tech uses to indicate back to the desk at a show - upturned palm lifting for louder, downturned palm lowering for quieter.
My partner has hearing loss, so her speaking volume sometimes doesn’t match the background. Even when it’s just the two of us hand signals are useful, as they can be dropped without breaking the flow of conversation. We use basically the same as a sound tech uses to indicate back to the desk at a show - upturned palm lifting for louder, downturned palm lowering for quieter.