OOV uses a dictionary of terms and their pronunciations. The dictionary is submitted with each request that uses OOV. The dictionary must include the vocab key for OOV terms or contextual phrases that include those terms, and may include the dict key for mapping OOV to their approximate pronunciations (sound-outs). Sound-outs are optional but should improve performance for made-up words, or when the relationship between a word's spelling and its pronunciation is otherwise unusual.

For example, the following JSON object literal defines approximate pronunciations for Voci, V-Blaze, and V-Cloud.

{ "vocab" : ["Voci Technologies", "V-Blaze transcription engine", "V-Cloud interface"],
  "dict" : { "Voci" : ["vo chee","woe chee","vo see","woe see","vo sigh","woe sigh"],
             "V-Blaze" : "vee blaze",
	     "V-Cloud" : "vee cloud"}
}

Download a copy of the file used in this example: example_oov.json

"vocab" : ["Voci Technologies", "V-Blaze transcription engine", "V-Cloud interface"]

"dict" : { "Voci" : ["vo chee","woe chee","vo see","woe see","vo sigh","woe sigh"],
             "V-Blaze" : "vee blaze",
             "V-Cloud" : "vee cloud"}