modulate
verb
[ ˈmɒdjʊleɪt ]
• exert a modifying or controlling influence on.
• "the state attempts to modulate private business's cash flow"
• vary the strength, tone, or pitch of (one's voice).
• "we all modulate our voice by hearing it"
Origin:
mid 16th century (in the sense ‘intone a song’): from Latin modulat- ‘measured, made melody’, from the verb modulari, from modulus ‘measure’ (see modulus).
