In-depth, open-ended interview: done to people
who are still fluent in using Toba Batak
language in everyday life.
Direct and participatory observations: applied
primarily in obtaining data to answer the
question in relation to the Toba Batak language
assimilation process, namely the spoken form.
Written documents: carried out to obtain
information, especially to answer the question
about Toba Batak language in written form.
Data analysis methods consisting of 3 data
analysis activities, namely:
Data condensation: process of selecting data,
focusing, simplifying, abstracting, and
transforming the data that appear in written-up
field notes or transcriptions.
Data display: process of selecting data,
focusing, simplifying, abstracting, and
transforming the data that appear in written-up
field notes or transcriptions.
Conclusion drawing/verification.
The data used in this study were obtained over
the 2 sources, such as sources of written and
oral data. The written data source is scriptures,
dictionary, and songbook. Oral sources of data
in this research were obtained from native
speakers in Sitoluama Village that is located in
Toba Samosir District and Hinalang Bagasan
Village that is located in Balige District, North
Sumatera, Indonesia.
4 RESULTS
The results of this research indicate that:
The process of assimilation in the form of
writing the Toba Batak language occurs in the
form of inter-morpheme that produces 5
changes, such as base word between prefixes,
base word between suffixes, base word
between confixes, and base word between
enclitics.
The process of assimilation in the form of
pronunciation of the Toba Batak language
occurs in inter-syllable, inter-morpheme, and
inter-word forms grouped into types of
assimilation, namely progressive assimilation,
regressive assimilation, and reciprocal
assimilation.
5 DISCUSSIONS
In Toba Batak language, not all phonemes or sounds
are written and pronounced the same as those
written in the writing. This causes assimilation,
which is a change in sound or mutual influence
between two adjacent sounds that can take the form
of words, between elements, and between words. So
that it changes the writing and speech which results
in the same or almost the same sound.
5.1 Written Form in Linguistic
Assimilation as Toba Batak’s
Natural Resources
The process of assimilation in the written spoken
only occurs in changes in forms inter-morphemes. In
inter-morpheme change, it is divided into 4 parts,
namely words with prefixes, words with suffixes,
words with confixes, and words with enclitic.
The assimilation process in the written form can
occur between basic words and prefixes. Prefixes
that are often used are maN- (nasal) prefixes that
have allomorphs (man-, mam-, mang}, prefix {paN-
} which has {pan-, pam-, pang-} allomorphs, {saN-}
prefixes that have alomorf {san-, sam-}, suffix {-
hon}, confix {maN-hon} and enclitic like {-ta}, {-
na}, {-hi} and {-hu}. Prefix {maN-}, {paN-}, and
{saN-} show a formal resemblance to the allomorph.
The selection of the prefix {maN-}, {paN-}, and
{saN-} as the representative of the morphs is due to
the level of ability {maN-}, {paN-}, and {saN-} to
distribute with basic morphemes which begin with
any vowels and consonants or the extent of
distribution with morph that is in Toba Batak
language. For example, the prefix {maN-} will
change to one of the allomorphs, which is morph
{man} if the prefix is attached to the base word
beginning with phoneme /d/ and phoneme /j/. Some
examples such as the morpheme {maN} + / dok/
become <mandok> ‘say’. In the {maN} + /jarum/
become <manjarum> ‘sewing’. The prefix {maN-}
will change to one of the allomorphs that is morph
{mam-} if it is attached to the base word that starts
with phoneme /b/. For example like in {maN-} +
/bahen/ becomes <mambahen> ‘to make’.
The assimilation process in the spoken form can
occur between basic words and suffixes. The suffix
that is often used is the {-hon}. The suffix {-hon} is
attached to the base term ending in phoneme /t/,
phoneme /p/, phoneme /s/, phoneme /r/, phoneme
//, and phoneme /l/. For examples like the