LA3370

No.619-6/11

(6) Using the HCC terminal for muting

Muting in the neighborhood of 37dB are feasible by utilizing HCC functions as muting functions when used in home

stereos and no need exists to suppress treble noises. Fade-in and fade-out of mutings, permitting delightful, shock-

noise-free muting are possible by providing a time constant to the pin 7 control.

(7) VCO damping

VCO oscillations can be damped by applying a voltage not less than 7V to the HCC terminal (pin 7) to enter a

monaural mode. At this time, both SNC and HCC are in an off mode. Fig. 9 shows flow-in current by voltages

applied to pin 7.

(8) Separation control terminal

Separation is controlled by controlling the main signal level.

The controllable separation (ratio of sub signal to main signal) range of the input composite signal is approximately

as follows :

Sub signal level

m=

Main signal level

(at peak level)

0.7<m<1.25

(9) For the application of LA1140 + LA3370 and its characteristics, refer to the catalog of the LA1140 (No. EN729).