Configuration | Symbl Docs

import Tabs from '@theme/Tabs';
import TabItem from '@theme/TabItem';
import {Redirect} from '@docusaurus/router';

Contents #

Config
Main Message Body
Speech Recognition
Speaker
Code Example

Config #

Field	Required	Supported value	Default Value	Description
`confidenceThreshold`	false	0.0 - 1.0	0.5	Minimum Confidence score that should be met for API to consider it as valid insight, if not provided defaults to 0.5 i.e. 50% or more
`languageCode`	false		en-US	The language code as per the BCP 47 specification
`speechRecognition`	false			Speaker identity to use for audio in this WebSocket connection. If omitted, no speaker identification will be used for processing. See below.
`meetingTitle`	false			The name of the meeting.

Main Message Body #

Field	Required	Supported Value	Description
`type`	true	start_request, stop_request	Type of message
`insightTypes`	false	action_item, question	Types of insights to return. If not provided, no insights will be returned.
`config`	false		Configuration for this request. See the config section below for more details.
`speaker`	false		Speaker identity to use for audio in this WebSocket connection. If omitted, no speaker identification will be used for processing. See below.

Speech Recognition #

Field	Required	Supported value	Default Value	Description
`encoding`	false	LINEAR16, FLAC, MULAW	LINEAR16	Audio Encoding in which the audio will be sent over the WebSocket.
`sampleRateHertz`	false		16000	The rate of the incoming audio stream.

Speaker #

Field	Required	Supported Value
`userId`	false	Any user identifier for the user.
`name`	false	Display name of the user.

Code Example #

Create a websocket client instance

const ws = new WebSocketClient();

ws.on('connectFailed', (err) => {
  console.error('Connection Failed.', err);
});

ws.on('connect', (connection) => {

  // Start the microphone
  micInstance.start();

  connection.on('close', () => {
    console.log('WebSocket closed.')
  });

  connection.on('error', (err) => {
    console.log('WebSocket error.', err)
  });

  connection.on('message', (data) => {
    if (data.type === 'utf8') {
      const {
        utf8Data
      } = data;
    console.log(utf8Data);  // Print the data for illustration purposes
    }
  });

  console.log('Connection established.');

  connection.send(JSON.stringify({
    "type": "start_request",
    "insightTypes": ["question", "action_item"],
    "config": {
      "confidenceThreshold": 0.9,
      // "timezoneOffset": 480, // Your timezone offset from UTC in minutes
      "languageCode": "en-US",
      "speechRecognition": {
        "encoding": "LINEAR16",
        "sampleRateHertz": 44100 // Make sure the correct sample rate is provided for best results
      },
      "meetingTitle": "Client Meeting"
    },
    "speaker": {
      "userId": "jane.doe@example.com",
      "name": "Jane"
    }
  }));

  micInputStream.on('data', (data) => {
    connection.send(data);
  });
});

For this example, we timeout our call after 2 minutes but in most scenarios you most likely want to make the stop_request call when your WebSoccket connection ends:

// Schedule the stop of the client after 2 minutes (120 sec)

  setTimeout(() => {
    micInstance.stop();
    // Send stop request
    connection.sendUTF(JSON.stringify({
      "type": "stop_request"
    }));
    connection.close();
  }, 120000);