ARPABET to IPA Mapping Lookup

Convert supported CMU ARPABET with unstressed AH/ER reductions and separately preserved 0/1/2 stress annotations; −1 means no explicit stress suffix, no inferred syllabification or misplaced syllable stress markers.

Description

CMU ARPABET tokens encode sounds and optional vowel stress.

CMU ARPABET tokens encode sounds and optional vowel stress. Segment conversion should preserve stress metadata without inventing syllable boundaries.^[1]

Enter nonempty supported uppercase ARPABET tokens with optional vowel suffix0/1/2; stress on consonants fails. Return IPA segments without stress marks, aligned stress codes and unsyllabified concatenation.

When to use ARPABET to IPA Mapping Lookup

Use ARPABET to IPA Mapping Lookup when you need to evaluate the supplied records under the calculation and evidence rules below. −1 means no supplied stress. No syllabification, complete pronunciation or stress-marker placement is inferred.

Prepare explicit text tokens, annotated language observations, caller mappings or a supported locale as requested. Preserve source evidence and the stated Unicode counting convention.

How to use ARPABET to IPA Mapping Lookup and understand its results

Prepare explicit text tokens, annotated language observations, caller mappings or a supported locale as requested. Preserve source evidence and the stated Unicode counting convention.
Enter cmuArpabetTokens using the field table and calculation rules, then run the tool.
Read ipaSegments, explicitTokenStressCodes, concatenatedUnsyllabifiedIpa. The explanation below defines the units, signs, ordering and any flags or placeholder values.
If the tool reports an input issue, correct the values and run it again. Apply the stated assumptions when interpreting a successfully returned result.

Input field	Meaning	Value type; see rules below	Requirement
cmuArpabetTokens	Cmu arpabet tokens	list of string	Required

AH0→ə; ER0→ɚ; other supported tokens use explicit IPA mappings

Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.

Output field	Meaning	Value type
ipaSegments	Ipa segments	list of string
explicitTokenStressCodes	Explicit token stress codes	list of number
concatenatedUnsyllabifiedIpa	Concatenated unsyllabified ipa	string

json

{
  "input": {
    "cmuArpabetTokens": [
      "HH",
      "AH0",
      "L",
      "OW1"
    ]
  },
  "output": {
    "ipaSegments": [
      "h",
      "ə",
      "l",
      "oʊ"
    ],
    "explicitTokenStressCodes": [
      -1,
      0,
      -1,
      1
    ],
    "concatenatedUnsyllabifiedIpa": "həloʊ"
  }
}

Limitations and assumptions

−1 means no supplied stress. No syllabification, complete pronunciation or stress-marker placement is inferred.

Numeric inputs, where present, must be finite. Follow the calculation-specific rules for overflow, underflow and exceptional cases. Numeric lists are limited to 10,000 entries; string lists to 128 strings of at most 128 characters each. The rules above may impose smaller limits. Missing required fields, extra fields, wrong value types and violations of the calculation rules are input errors.

Alternative or Complementary methods

Use X-SAMPA to IPA Converter: X-SAMPA represents phonetic symbols in ASCII. Explicit tokens prevent ambiguity between multicharacter symbols and adjacent sounds. For a complementary task, use IPA Vowel Height/Backness Classifier: The IPA vowel chart describes height, backness and rounding. A plain-symbol lookup is different from measuring an acoustic vowel.

References

ARPABET to IPA Mapping Lookup — tool.io

Similar or alternative tools

X-SAMPA to IPA Converter
X-SAMPA represents phonetic symbols in ASCII. Explicit tokens prevent ambiguity between multicharacter symbols and adjacent sounds.
IPA Vowel Height/Backness Classifier
The IPA vowel chart describes height, backness and rounding. A plain-symbol lookup is different from measuring an acoustic vowel.