ACOUSTIC SOLUTIONS DAB31-A, Instruction Manual

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Dynamic range control (DRC)
In DAB mode:
The dynamic range for each radio programme is set by the broadcaster for each radio
station and may be different for the types of programme broadcast, such as pop or classical
music or a chat show. The dynamic range control signal is transmitted in parallel with the
audio signal for each programme and with your radio you can use this control signal to
expand or compress the dynamic range (the difference between the loudest and quietest
sounds) of the reproduced audio signal. Changing the dynamic range can affect the
‘loudness’ and/or ‘quality of sound’ of the programme that you hear so that it will be more
suited to your listening conditions and your own personal listening requirements. e.g. in
a noisy environment, where quiet sounds might be swamped, setting the compression to
maximum will ‘boost’ the quiet sounds, whilst keeping the loudest sounds at their original
level.
There are 3 levels of compression:
• DRC off:
no compression. This is the default setting.
• DRC low: medium compression.
• DRC high: maximum compression.
1. Press and hold the ‘Menu’ button, ‘<Full scan>’ will be displayed.
2. Use the rotary ‘Tune/Select’ control to scroll to ‘<Prune>’ and press the rotary control to
‘Select’. The current DRC setting will have an ‘*’ next to it.
3. Use the rotary control to scroll through the options and press the rotary control to
confirm.