churn zone
n.— «Ditech Networks, a leading provider of voice quality solutions to the global communications industry, today announced the results of its worldwide voice quality audit, which showed that an average of 39 percent of all mobile calls fall below the industry minimum standard for voice quality, often called the “churn zone.” » —“Audit of 630 Million Live Mobile Calls Shows 39% Fall Below Industry Minimum Standard for Voice Quality” in Mountain View, California PR Newswire Feb/ 6, 2008. (source: Double-Tongued Dictionary)
Further reading
Quiz Guy John Chaneski’s puzzle relies on voiced and unvoiced consonants, specifically the consonants D and T. One clue brings to mind a famous name with an unvoiced T sound in it, but also a clue to the name if you replace the voiced T with an...
How do you pronounce the word mobile, as in the toy that hangs above a baby’s crib? In the United States, that kind of mobile is pronounced MOH-beel, but in the United Kingdom, it’s MOH-byle. In the early 1930s, the American sculptor Alexander...