SBS complies with the technical standard for loudness in terrestrial broadcasting in Australia, set by Free TV Australia. The standard ensures that the audio level of television programs is consistent across different channels and during commercial breaks, so that viewers are not subjected to sudden changes in volume. This standard is used by all national and commercial television broadcasters in Australia. The volume level of an advertisement can be affected by many factors such as the listener's environment and the playback system. The standards set by Free TV aim to provide a consistent loudness level across different types of audio content and across different channel.