Add files via upload

alexa.go

@@ -0,0 +1,151 @@
+// for the speech to speech to occur the speech needs to be converted into a text.
+// the text is used to query the wolfram alpha api.
+//the the answer is a text/string and is written to an xml file
+//the xml file is read to produce a wav file for the user
+
+
+package main
+import (
+  "fmt"
+  "errors"
+  "io/ioutil"
+  "net/http"
+  "bytes"
+  "strings"
+  "log"
+  "encoding/xml"
+  "os"
+)
+//used to build the xml file
+type speak struct {
+	Version  string `xml:"version,attr"`
+	Language string `xml:"xml:lang,attr"`
+	Voice    voice  `xml:"Voice"`
+}
+//used to build the xml file
+type voice struct {
+	Language string `xml:"xml:lang,attr"`
+	Name     string `xml:"name,attr"`
+	Words    string `xml:",chardata"`
+}
+
+
+const (
+  REGION = "uksouth"
+  URI    = "https://" + REGION + ".stt.speech.microsoft.com/" +
+           "speech/recognition/conversation/cognitiveservices/v1?" +
+           "language=en-US"
+  KEY    = "19c1cb3c0aa848608fed5a5a8a23d640"
+)
+
+func check( e error ) { if e != nil { panic( e ) } }
+
+//text to speech function
+func TextToSpeech( text []byte ) ( []byte, error ) {
+	client   := &http.Client{}
+	req, err := http.NewRequest( "POST", URI, bytes.NewBuffer( text ) )
+	check( err )
+
+	req.Header.Set( "Content-Type", "application/ssml+xml" )
+	req.Header.Set( "Ocp-Apim-Subscription-Key", KEY )
+	req.Header.Set( "X-Microsoft-OutputFormat", "riff-16khz-16bit-mono-pcm" )
+
+	rsp, err2 := client.Do( req )
+	check( err2 )
+
+	defer rsp.Body.Close()
+
+	if rsp.StatusCode == http.StatusOK {
+	  body, err3 := ioutil.ReadAll( rsp.Body )
+	  check( err3 )
+	  return body,  nil
+	} else {
+	  return nil, errors.New( "cannot convert text to speech" )
+	}
+  } 
+
+func SpeechToText( speech []byte ) ( string, error ) {
+  client   := &http.Client{}
+  req, err := http.NewRequest( "POST", URI, bytes.NewReader( speech ) )
+  check( err )
+
+  req.Header.Set( "Content-Type",
+                  "audio/wav;codecs=audio/pcm;samplerate=16000" )
+  req.Header.Set( "Ocp-Apim-Subscription-Key", KEY )
+
+  rsp, err2 := client.Do( req )
+  check( err2 )
+
+  defer rsp.Body.Close()
+
+  if rsp.StatusCode == http.StatusOK {
+    body, err3 := ioutil.ReadAll( rsp.Body )
+    check( err3 )
+    return string( body ),  nil
+  } else {
+    return "", errors.New( "cannot convert to speech to text" ) 
+  }
+}
+
+func main() {
+
+//declaring question text 
+var question string
+
+
+  speech, err1 := ioutil.ReadFile( "testwav.wav" ) //example wav file is inputed here 
+  check( err1 )
+  text, err2 := SpeechToText( speech ) //retrieved the text from wav file
+  check( err2 )
+  fmt.Println( text )
+
+//text is the question string for the wolfram alpha short answers api
+question = text
+//string being modified to fit inside the url used to access api
+question = strings.ReplaceAll(question, " ", "+")
+
+//wolframalpha appid is already in the link and not stored in a variable
+resp, getErr := http.Get("http://api.wolframalpha.com/v1/result?appid=H4RUYV-2WP4YG72XJ&i=" + question)
+if getErr != nil {
+	log.Fatal(getErr)
+}
+//body is the result string 
+body, readErr := ioutil.ReadAll(resp.Body)
+if readErr != nil {
+	log.Fatal(readErr)
+}
+fmt.Println(string(body)) //retrieved the resulting string
+
+//the string is to be written to the xml file
+var answer string
+answer = string(body)
+
+x := &speak{Version: "1.0", Language: "en-US",
+		Voice: voice{Language: "en-US", Name: "en-US-JennyNeural", Words: answer},//inserts answer
+	}
+
+	enc := xml.NewEncoder(os.Stdout)
+	enc.Indent("", "  ")
+	if err := enc.Encode(x); err != nil {
+		fmt.Printf("error: %v\n", err)
+	}
+
+	data, err := xml.MarshalIndent(x, " ", "  ")
+	if err != nil {
+		log.Fatal(err)
+	}
+	err = ioutil.WriteFile("test.xml", data, 0666)
+	if err != nil {
+		log.Fatal(err)
+	}
+//after making an xml file, use this file to read the speech
+//after making an xml file, use this file to read the speech
+
+text2, err := ioutil.ReadFile( "test.xml" ) //reads the file
+check( err )
+speech2, err2 := TextToSpeech( text2 )//converts to wav file
+check( err2 )
+err3 := ioutil.WriteFile( "speech.wav", speech2, 0644 )//outputs wav file
+check( err3 )
+}
+

alpha.go

@@ -0,0 +1,40 @@
+package main
+
+import (
+	"bufio"
+	"fmt"
+	"io/ioutil"
+	"log"
+	"net/http"
+	"os"
+	"strings"
+)
+
+type question struct{
+	text string
+}
+
+type answer struct{
+	text string 
+}
+
+func main() {
+
+	fmt.Printf("Enter your question : ")
+	inputReader := bufio.NewReader(os.Stdin)
+	input, _ := inputReader.ReadString('\n')
+
+	input = strings.ReplaceAll(input, " ", "+")
+	input = strings.ReplaceAll(input, "\n", "")
+
+	resp, getErr := http.Get("http://api.wolframalpha.com/v1/result?appid=H4RUYV-2WP4YG72XJ&i=" + input)
+	if getErr != nil {
+		log.Fatal(getErr)
+	}
+	body, readErr := ioutil.ReadAll(resp.Body)
+	if readErr != nil {
+		log.Fatal(readErr)
+	}
+	fmt.Println(string(body))
+
+}

speechtotext.go

@@ -0,0 +1,78 @@
+package main
+import (
+  "fmt"
+  "errors"
+  "io/ioutil"
+  "net/http"
+  "bytes"
+  "strings"
+  "log"
+)
+
+//utilising microsoft azure
+
+const (
+  REGION = "uksouth"
+  URI    = "https://" + REGION + ".stt.speech.microsoft.com/" +
+           "speech/recognition/conversation/cognitiveservices/v1?" +
+           "language=en-US"
+  KEY    = "19c1cb3c0aa848608fed5a5a8a23d640"
+)
+
+func check( e error ) { if e != nil { panic( e ) } }
+
+//speech to texxt function
+
+func SpeechToText( speech []byte ) ( string, error ) {
+  client   := &http.Client{}
+  req, err := http.NewRequest( "POST", URI, bytes.NewReader( speech ) )
+  check( err )
+
+  req.Header.Set( "Content-Type",
+                  "audio/wav;codecs=audio/pcm;samplerate=16000" )
+  req.Header.Set( "Ocp-Apim-Subscription-Key", KEY )
+
+  rsp, err2 := client.Do( req )
+  check( err2 )
+
+  defer rsp.Body.Close()
+
+  if rsp.StatusCode == http.StatusOK {
+    body, err3 := ioutil.ReadAll( rsp.Body )
+    check( err3 )
+    return string( body ),  nil
+  } else {
+    return "", errors.New( "cannot convert to speech to text" ) 
+  }
+}
+
+func main() {
+
+//declaring question text 
+var question string
+  speech, err1 := ioutil.ReadFile( "speech.wav" ) //example wav file is inputed here 
+  check( err1 )
+  text, err2 := SpeechToText( speech ) //retrieved the text from wav file
+  check( err2 )
+  fmt.Println( text )
+
+//text is the question string for the wolfram alpha short answers api
+question = text
+//string being modified to fit inside the url used to access api
+question = strings.ReplaceAll(question, " ", "+")
+
+resp, getErr := http.Get("http://api.wolframalpha.com/v1/result?appid=H4RUYV-2WP4YG72XJ&i=" + question)
+if getErr != nil {
+	log.Fatal(getErr)
+}
+//body is the result string 
+body, readErr := ioutil.ReadAll(resp.Body)
+if readErr != nil {
+	log.Fatal(readErr)
+}
+fmt.Println(string(body))
+
+}
+
+
+