Walla
Definition
Background voices or crowd ambience used in film and television post-production to create the sense of people in an environment — a restaurant, a crowd, a busy office. Walla is typically non-intelligible to avoid competing with foreground dialogue.
In Simple Terms
Background crowd noise used in film and TV — the murmur of a restaurant, the chatter of a busy street. It's intentionally vague and blurry so it feels real without any words competing with the actual dialogue.
In Practice
A coffee shop scene requires walla — low-level, indistinct background conversation — blended beneath the main dialogue to establish the environment without drawing attention.
Common Confusion
Walla must sound like people speaking without the audience understanding any specific words. The classic technique is to record performers saying "rhubarb rhubarb" or counting numbers — meaningful enough to carry vocal cadence and emotion, but linguistically empty so a viewer cannot accidentally follow a side conversation that pulls focus from the main dialogue.
Sources & Verification
- Yewdall, D. L. — Practical Art of Motion Picture Sound (4th ed., walla and ambience chapter)Focal Press, 2012
- Holman, T. — Sound for Film and Television (3rd ed.)Focal Press, 2010
Last verified: 2026-05-05