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WCAG 1.4.7: Low or No Background Audio (Level AAA)

Have you ever tried listening to a podcast or audio guide, only to struggle because background music was competing with the speaker?

It’s distracting and frustrating, especially for people with hearing impairments. Low or No Background Audio ensures that important speech isn’t drowned out by background noise, giving everyone a clear and focused listening experience.

Who this impacts

  • People with hearing impairments: Competing background sounds can make it harder to distinguish speech.
  • People with cognitive impairments: Background noise can reduce focus and make it difficult to follow spoken content.
  • People using mobile devices: In noisy environments, users rely on clear audio to make sure they don’t miss important information.
  • Everyone: Clear, focused audio improves the listening experience for all users.

How to meet low or no background audio

  1. Remove or lower background audio: Ensure that background sounds are either eliminated or kept at a very low volume so they don’t interfere with speech.
  2. Provide a “no background audio” option: If background music isn’t essential to the content, give users the option to turn it off.
  3. Prioritize speech clarity: Test the clarity of spoken content with and without background audio to ensure the speech is always easy to understand.

Practical example

A meditation app offers guided sessions with soft background music. Users can toggle off the music, leaving only the instructor’s voice, ensuring a distraction-free experience.

Exceptions

Content where background sound is essential (e.g., a musical performance or a scene in a movie) is exempt from this requirement.

Top tips

  • Keep background sound subtle: If background audio is used, keep it soft and non-intrusive to prevent interference with speech.
  • Allow personalization: Let users decide if they want background sounds by providing an on/off toggle for music or ambiance.
  • Reduce background noise automatically: Use audio editing tools to keep background audio at a minimal level so that speech is always easy to understand.
  • Test for distractions: Listen to your audio content in different environments and ensure that speech is always clear, even in noisy conditions.

Further reading

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