(Node.js) IBM Cloud - Text to Speech - Synthesize Audio (POST)

Synthesizes text to audio that is spoken in the specified voice. Uses a POST which allows for more text to be synthesized.

For more information, see https://cloud.ibm.com/apidocs/text-to-speech#synthesize-audio

Install Chilkat for Node.js and Electron using npm at Chilkat npm packages for Node.js Chilkat npm packages for Electron on Windows, Linux, MacOSX, and ARM

var os = require('os');
if (os.platform() == 'win32') {  
    if (os.arch() == 'ia32') {
        var chilkat = require('@chilkat/ck-node21-win-ia32');
    } else {
        var chilkat = require('@chilkat/ck-node21-win64'); 
    }
} else if (os.platform() == 'linux') {
    if (os.arch() == 'arm') {
        var chilkat = require('@chilkat/ck-node21-arm');
    } else if (os.arch() == 'x86') {
        var chilkat = require('@chilkat/ck-node21-linux32');
    } else {
        var chilkat = require('@chilkat/ck-node21-linux64');
    }
} else if (os.platform() == 'darwin') {
    if (os.arch() == 'arm64') {
        var chilkat = require('@chilkat/ck-node21-mac-m1');
    } else {
        var chilkat = require('@chilkat/ck-node21-macosx');
    }
}

function chilkatExample() {

    // This example assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    var http = new chilkat.Http();
    var success;

    http.Login = "apikey";
    http.Password = "my_apikey";
    http.BasicAuth = true;

    // Send the following request:

    // curl -X POST -u "apikey:{apikey}" 
    //    --header "Content-Type: application/json" 
    //    --header "Accept: audio/wav" 
    //    --data "{\"text\":\"When life gives you lemons, order the lobster tail.\"}" 
    //    --output lobster.wav "{url}/v1/synthesize?voice=en-US_AllisonV3Voice"

    // Use your base URL shown in the credentials web page (below your apikey)
    var myBaseUrl = "https://api.us-south.text-to-speech.watson.cloud.ibm.com/instances/31941e96-7b89-4d56-8993-9cd8f18ec2d8";

    var sbUrl = new chilkat.StringBuilder();
    sbUrl.Append(myBaseUrl);
    sbUrl.Append("/v1/synthesize?voice=en-US_AllisonV3Voice");

    http.Accept = "audio/wav";

    var json = new chilkat.JsonObject();
    json.UpdateString("text","When life gives you lemons, order the lobster tail.");

    // resp: HttpResponse
    var resp = http.PostJson3(sbUrl.GetAsString(),"application/json",json);
    if (http.LastMethodSuccess == false) {
        console.log(http.LastErrorText);
        return;
    }

    var respStatusCode = resp.StatusCode;
    console.log("response status code = " + respStatusCode);

    if (respStatusCode == 200) {
        success = resp.SaveBodyBinary("qa_output/lobster.wav");
        console.log("Success!");
    }
    else {
        console.log(resp.BodyStr);
    }


}

chilkatExample();