ELECTRIC

MITSUBISHI

PRELIMINARY

Notice

; This

is not

a final

specification.

some

parametric

limits

are

subject

to change.

(

/ 36 )

M65851FP

MITSUBISHI SEMICONDUCTORS

(SOUND PROCDSSOR ICs)

KARAOKE

SERIES

2 Music detection

To search a music interval, it is necessary to judge if it is a music or not. This judgment

is made by monitoring the 20 seconds and counting the pulse signal (after level detection).

The pulse signal counts is bigger than fixed counts, it is judged as a music.

Pulse counter is reset whenever monitor 20 seconds or judged no music decision.

about 20 sec

Music decision

3 No music detection

After Music decision ( 2 ), no music is judged when no pulse in level detection at 3

seconds.But if there isn't no pulse when monitoring the3 seconds, no music decision

counter is reset .

about 3 sec

No music decision

21

pulse output

(after level detection)

pulse output

(after level detection)