chrome/browser/resources/chromeos/accessibility/chromevox/common/tts_base.js

// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

/**
 * @fileoverview A base class for Tts living on Chrome platforms.
 *
 */
import {AbstractTts} from './abstract_tts.js';

export class ChromeTtsBase extends AbstractTts {
  constructor() {
    super();
    this.propertyDefault['pitch'] = 1;
    this.propertyMin['pitch'] = 0.2;
    this.propertyMax['pitch'] = 2.0;

    this.propertyDefault['rate'] = 1;
    this.propertyMin['rate'] = 0.2;
    this.propertyMax['rate'] = 5.0;

    this.propertyDefault['volume'] = 1;
    this.propertyMin['volume'] = 0.2;
    this.propertyMax['volume'] = 1.0;
  }
}