undermodulate

[ uhn-der-moj-uh-leyt ]
/ ˌʌn dərˈmɒdʒ əˌleɪt /

verb (used with object), un·der·mod·u·lat·ed, un·der·mod·u·lat·ing.

to reproduce (a sound or signal) at below the optimal output level in a recording or broadcasting system, causing it to be distorted.

OTHER WORDS FROM undermodulate

un·der·mod·u·la·tion, noun