Yamaha 02R Manual Do Utilizador

Dynamics

An expander is another form of automatic level control. By attenuating the 
signal below the threshold, the expander reduces low-level noise and 
effectively increases the dynamic range of the recorded material.

determines the level of input signal required to trigger the 

expander. Signals above the threshold pass through unaffected. Signals at 
and below the threshold level are attenuated by the amount specified using 
the Ratio parameter. The trigger signal is determined using the KEY IN 
parameter.

controls the amount of expansion - the change in output signal level 

relative to change in input signal level. With a 1:2 ratio, for example, a 5 dB 
change in input level (below the threshold) results in a 10 dB change in 
output level. For a 1:5 ratio, a 2 dB change in input level (below the 
threshold) results in a 10 dB change in output level.

 controls how soon the signal is expanded once the expander has 

been triggered. With a fast attack time, the signal is expanded almost 
immediately. With a slow attack time, the initial transient of a sound passes 
through unaffected.

sets the expander’s output signal level.

 sets the transition of the signal at the threshold. With a hard knee, the 

transition between unexpanded and expanded signal is immediate. With 
the softest knee, knee5, the transition starts before the signal reaches the 
threshold and gradually ends above the threshold.

 determines how soon the expander returns to its normal gain once 

the trigger signal level drops below the threshold.

–54 to 0

(55 points)

1.0, 1.1, 1.3, 1.5, 1.7, 2.0, 2.5, 3.0, 3.5, 4.0, 5.0, 6.0, 8.0, 
10, 20, 

∞

(16 points)

0 to 120

(121 points)

0 to +18

(36 points)

hard,1,2,3,4,5

(6 points)

5 ms to 42.3 sec

 *1

, 6 ms to 46.0 sec

 *2

, 

8 ms to 63.4 sec

 *3

(160 points)

*1

These values are obtained when the sampling frequency is 48kHz.

*2

These values are obtained when the sampling frequency is 44.1 kHz.

*3

These values are obtained when the sampling frequency is 32 kHz