(D11) Highest output level setting (when the AN-001T is used and ANC operation is set to ACTIVE)

M A X I M U M L E V E L

0

Set the upper limit of the ANC-activated output level.

Setting Range –15, –12, –9, –6, –3, 0 (default) dB

Note: Settable level is 3 dB or more above the lower limit (lowest output level).

(D12) Sampling time setting (when the AN-001T is used and ANC operation is set to ACTIVE)

S A M P L E T I M E

2 0

Set the required time to measure ambient noise. The ambient noise level is determined by being averaged over the set measuring time. When the measuring time is long, the output level changes slowly with the ambient level. However, the change in output level is not susceptible to a sudden change in ambient noise level.

Setting Range 10, 15, 20 (default), 30, 60, 120,180, 300 sec

(D13) Gain ratio setting (when the AN-001T is used and ANC operation is set to ACTIVE)

G A I N R A T I O

3 : 3

Set the degree of change in the output sound level to that in ambient noise level, which is displayed as the ratio "ambient noise level : output level."

Setting Range 6:3, 5:3, 4:3, 3:3 (default), 3:4, 3:5, 3:6, 6:–3, 5:–3, 4:–3, 3:–3, 6:–3, 5:–3, 4:–3, 3:–3, 3:–4, 3:–5, 3:–6

When the ratio of output level to ambient noise level is great, the degree of change in output level becomes greater than that in ambient noise level.

The greater the amount of change in output level is, the faster the output level reaches the upper limit or lower limit, causing the sound volume not to change any more.

Contrary, when the ratio of output level to ambient noise level is small, the degree of change in output level becomes smaller than that in ambient noise level.

When the ratio of output level is positive, the output level increases as the ambient noise level increases. When the ratio of output level is negative, the output level decreases as the ambient noise level increases. For example, when the ratio "3 : 3" is selected, the output volume level increases by 3 dB as the ambient noise level increases by 3 dB.

Amount of change in output level (dB)

3:3 (Default)

 

 

 

 

 

 

 

 

 

6

 

 

 

 

 

 

 

 

6:3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

 

 

 

 

 

 

 

 

 

 

0

 

 

 

 

 

 

 

 

 

 

(Reference level)

3

6

Amount of change

 

 

 

 

 

 

 

 

 

in noise level (dB)

-3

 

 

 

 

 

 

 

 

6:-3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

-6

 

 

 

 

 

 

 

 

3:-3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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