Charles Boberg in the context of "Dialects of North American English"

Western New England English refers to the varieties of New England English native to Vermont, Connecticut, and the western half of Massachusetts; New York State's Hudson Valley (from Albany to Poughkeepsie) also aligns to this classification. Sound patterns historically associated with Western New England English include the features of rhoticity (full pronunciation of all r sounds), the horse–hoarse merger, and the father–bother merger, none of which are features traditionally shared in neighboring Eastern New England English. The status of the cot–caught merger in Western New England is inconsistent, being complete in the north of this dialect region (Vermont), but incomplete or absent in the south (southern Connecticut), with a "cot–caught approximation" in the middle area (primarily, western Massachusetts).

Western New England English is relatively difficult for most American laypersons and even dialectologists to identify by any "distinct" accent when compared to its popularly recognized neighbors (Eastern New England English, New York City English, and Inland Northern U.S. English), meaning that its accents are typically perceived as unmarked "General American" varieties. Linguistic research, however, reveals that Western New England English is not simply one single or uniform dialect. Linguist Charles Boberg proposes that it be most generally divided into a Northwestern New England English (a standalone "Vermont" accent) and a Southwestern New England English (a less advanced subdialect of Inland Northern English); however, even Boberg lists the possibilities of several distinct accent divisions of Western New England.

The Atlas of North American English: Phonetics, Phonology and Sound Change (abbreviated ANAE; formerly, the Phonological Atlas of North America) is a 2006 book that presents an overview of the pronunciation patterns (accents) in all the major dialect regions of the English language as spoken in urban areas of the United States and Canada. It is the result of a large-scale survey by linguists William Labov, Sharon Ash, and Charles Boberg. Speech data was collected, mainly from 1992 to 1999, by means of telephone interviews with individuals in metropolitan areas in all regions of the U.S. and Canada. Using acoustic analysis of speech from these interviews, ANAE traces sound changes in progress in North American English, and defines boundaries between dialect regions based on the different sound changes taking place in them.

The Atlas of North American English received the Leonard Bloomfield Book Award at the 2008 meeting of the Linguistic Society of America.