This
feature indicates the interaction of signal that can exist from one
channel to another. If this value were very small, less than 15 db, it
would have a poor separation between the musical information collected
in one furrow and in another, and the musical information of a furrow
would go through the two channels of amplification. This would result in
a loss of the panoramic sense that provides a stereo recording. The
separation between channels in average frequencies of 500 Hz to 15 khz
is not sufficient data because the critical frequencies for this
parameter are greater than 15 khz and less than 500 Hz. If the
separation between channels in the half-frequency zone is less than 20
db, it is possible to ensure that the cartridge is of very low
performance.
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