Can I use
?

Speech Synthesis API

- UNOFF

A web API for controlling a text-to-speech output.

Chrome

  1. ❌ 4 - 32: Not supported
  2. ✅ 33 - 54: Supported
  3. ✅ 55 - 144: Supported
  4. ✅ 145: Supported
  5. ✅ 146 - 148: Supported

Edge

  1. ❌ 12 - 13: Not supported
  2. ✅ 14 - 18: Supported
  3. ✅ 79 - 144: Supported
  4. ✅ 145: Supported

Safari

  1. ❌ 3.1 - 6.1: Not supported
  2. ✅ 7 - 26.2: Supported
  3. ✅ 26.3: Supported
  4. ✅ 26.4 - TP: Supported

Firefox

  1. ❌ 2 - 30: Not supported
  2. ❌ 31 - 48: Disabled by default
  3. ✅ 49 - 146: Supported
  4. ✅ 147: Supported
  5. ✅ 148 - 150: Supported

Opera

  1. ❌ 9 - 26: Not supported
  2. ✅ 27 - 63: Supported
  3. ✅ 64 - 124: Supported
  4. ✅ 125: Supported

IE

  1. ❌ 5.5 - 10: Not supported
  2. ❌ 11: Not supported

Chrome for Android

  1. ✅ 145: Supported

Safari on iOS

  1. ❌ 3.2 - 6.1: Not supported
  2. ✅ 7 - 26.2: Supported
  3. ✅ 26.3: Supported
  4. ✅ 26.4: Supported

Samsung Internet

  1. ❌ 4: Not supported
  2. ✅ 5 - 28: Supported
  3. ✅ 29: Supported

Opera Mini

  1. ❌ all: Not supported

Opera Mobile

  1. ❌ 10 - 12.1: Not supported
  2. ❌ 80: Not supported

UC Browser for Android

  1. ❌ 15.5: Not supported

Android Browser

  1. ❌ 2.1 - 4.4.4: Not supported
  2. ❌ 145: Not supported

Firefox for Android

  1. ✅ 147: Supported

QQ Browser

  1. ✅ 14.9: Supported

Baidu Browser

  1. ❌ 13.52: Not supported

KaiOS Browser

  1. ✅ 2.5: Supported
  2. ✅ 3: Supported

Samsung Internet for GearVR: In Development, release based on Chromium m53 due Q1/2017

Resources:
MDN article
Google Developers article
Demo
SitePoint article
Advanced demo and resource