Find out how to pack a stereo sign in a single file groove

There are two potentialities to
modulate a groove:

Simplified presentation

&

Horizontal Modulation

Each modulations collectively:

However:

Horizontal modulation is best than vertical !

Vertical modulation:



Extra distortion !

Giant amplitudes, not attainable !



One channel all the time could be higher !

The compromise:

Every channel half vertical, half
horizontal !

A compromise