translate Incremental volume control

Where ICT hardware has speech output and its volume control is incremental, it shall provide at least one intermediate step of 12 dB gain above the lowest volume setting.

Testing methods

Type of compliance Inspection based on measurement data
  1. The ICT hardware has speech output.
  2. The volume control is incremental.
  1. Measure the level (in dB) of the speech output at the lowest volume setting.
  2. Check if one intermediate step provides a level 12 dB above the lowest volume level measured in step 1. 
Result Pass: Check 2 is true
Fail: Check 2 is false

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