I was, I felt, getting rather good at Scottish noises myself.

He made a derisive Scottish noise in his throat.

He made a small Scottish noise, indicating dubious agreement.

Jamie made a low Scottish noise in his throat.

He made a small Scottish noise of dismissal, deep in his throat.

Jamie made a Scottish noise indicating that he took the point, but with skepticism.

He made another Scottish noise, this one deep-chested and filled with uneasy doubt.

Colin made a Scottish noise, expressive of any interpretation which its hearer might care to put on it.

Jamie made a derisory Scottish noise in the back of his throat.

A moment later, Jamie made a Scottish noise deep in his throat, and moved off too.