{
"$schema": "https://json-schema.org/draft-07/schema#",
"$id": "https://ets-research.org/ia11ylab/ia/json/ssml-json-schema-w3cptf.json",
"title": "SSML as a single attribute for inclusion in HTML",
"description": "JSON structure representing each SSML element as a JSON object. The SSML properties are dervived 

from https://www.w3.org/TR/speech-synthesis11/.  Several elements are excluded: mark, speak, p, w and the desc attribute. 

Author: M. Hakkinen - ETS",
"type": "object",
"properties": {
	"say-as": {
	"description": "The unique identifier for a product",
	"type": "object",
	"properties": {
	    "interpret-as": { "type": "string",
			   "enum": ["date","time","telephone","characters","cardinal","ordinal"]},
		"format": { "type": "string" },
		"detail": {"type": "string"}
		  }
		},
	 "phoneme": {
		  "description": "The Phoneme Function",
		  "type": "object",
		  "properties": {
			  "ph": { "type": "string"},
			  "alphabet": {"type": "string", "enum": ["ipa", "x-sampa"]}}
		},
	  "sub": {
	        "description": "sub function", "type": "object", 
		"properties": {
		  "alias": {"type":"string"}}
		},
	  "voice":{"description": "voice function", "type":"object",
		"properties": {
			"gender": {"type":"string",
			  	"enum": ["female","male","neutral"]},
				"age": {"type":"integer"},
				"variant":{"type":"string"},
				"name": {"type":"string"},
				"languages": {"type":"string"}
				}
			  },
		 "emphasis":{
			"description": "speech emphasis level",
			"type":"object",
			"properties": {
				"level": {"type":"string",
					"enum": ["none","x-weak","weak","medium","strong","x-strong"]},
					"time": {"type":"string",
					"pattern":"^(-?(0|[1-9]\\d*)?(\\.\\d+)?(?<=\\d)ms|s)$"}
					}
				},
		"prosody": {
			"description": "speech prosody",
			"type":"object",
			"properties": {
				"pitch": {"type":"string",
					"pattern":"^x-low|low|medium|high|x-high|default|(-?(0|[1-9]\\d*)?(\\.\\d+)?(?<=\\d)Hz)$"},    
				"contour": {"type":"string"},
				"range": {"type":"string",
				"pattern":"^x-low|low|medium|high|x-high|default|(-?(0|[1-9]\\d*)?(\\.\\d+)?(?<=\\d)Hz)$"},
				"rate": {"type":"string",
				"pattern":"^x-slow|slow|medium|fast|x-xfast|default|(-?(0|[1-9]\\d*)?(\\.\\d+)?(?<=\\d)%)$"},
				"duration": {"type": "string",
				"pattern":"^(-?(0|[1-9]\\d*)?(\\.\\d+)?(?<=\\d)ms|s)$"},
				"volume": {"type":"string",
					"pattern":"^silent|x-soft|soft|medium|loud|x-loud|default|(+|-?(0|[1-9]\\d*)?(\\.\\d+)?(?<=\\d)dB)$"}
					}
				},
		"break": {
			"description": "break - insert a timed pause",
			"type":"object",
			"properties": {
				"strength": {"type":"string",
				"enum": ["none","x-weak","weak","medium","strong","x-strong"]},
				"time": {"type":"string",
				"pattern":"^(-?(0|[1-9]\\d*)?(\\.\\d+)?(?<=\\d)ms|s)$"}
				}
			},
		"audio": {
			"description":"audio element used to insert audio file into speech stream",
			"type":"object",
			"properties":{
				"src": {"type":"uri"},
				"fetchtimeout":{"type":"string",
					"pattern":"^(-?(0|[1-9]\\d*)?(\\.\\d+)?(?<=\\d)ms|s)$"},
				"fetchint":{"type":"string",
					"enum": ["safe","prefetch"]},
				"maxage":{"type":"string"},
				"maxstale":{"type":"string"},
				"clipBegin":{"type": "string",
					"pattern":"^(-?(0|[1-9]\\d*)?(\\.\\d+)?(?<=\\d)ms|s)$"},
				"clipEnd":{"type": "string",
					"pattern":"^(-?(0|[1-9]\\d*)?(\\.\\d+)?(?<=\\d)ms|s)$"},
				"repeatCount":{"type":"integer"
					"repeatDur":{"type": "string",
					"pattern":"^(-?(0|[1-9]\\d*)?(\\.\\d+)?(?<=\\d)ms|s)$"},
				"soundLevel":{"type":"string",
					"pattern":"^(+|-?(0|[1-9]\\d*)?(\\.\\d+)?(?<=\\d)dB)$"},
				"speed":{
					"type":"string",
					"pattern":"^((0|[1-9]\\d*)?(\\.\\d+)?(?<=\\d)%)$"}
				 }
				}
			}
			}