API веб-речи: постоянно получайте поддерживаемые голоса синтеза речи в iOS Safari.

Я также столкнулся с этим и сообщил об ошибке в Apple. На сегодняшний день отчет об ошибке все еще открыт.

В итоге в качестве обходного пути я решил жестко закодировать массив из 37 голосов. Если speechSynthesis.getVoices() возвращает пустой массив, используйте вместо него жестко закодированный массив.

var _voices = [];

// iOS 8
var _iOSvoices = [
    {name: "pt-BR", voiceURI: "pt-BR", lang: "pt-BR", localService: true, default: true},
    {name: "fr-CA", voiceURI: "fr-CA", lang: "fr-CA", localService: true, default: true},
    {name: "sk-SK", voiceURI: "sk-SK", lang: "sk-SK", localService: true, default: true},
    {name: "th-TH", voiceURI: "th-TH", lang: "th-TH", localService: true, default: true},
    {name: "ro-RO", voiceURI: "ro-RO", lang: "ro-RO", localService: true, default: true},
    {name: "no-NO", voiceURI: "no-NO", lang: "no-NO", localService: true, default: true},
    {name: "fi-FI", voiceURI: "fi-FI", lang: "fi-FI", localService: true, default: true},
    {name: "pl-PL", voiceURI: "pl-PL", lang: "pl-PL", localService: true, default: true},
    {name: "de-DE", voiceURI: "de-DE", lang: "de-DE", localService: true, default: true},
    {name: "nl-NL", voiceURI: "nl-NL", lang: "nl-NL", localService: true, default: true},
    {name: "id-ID", voiceURI: "id-ID", lang: "id-ID", localService: true, default: true},
    {name: "tr-TR", voiceURI: "tr-TR", lang: "tr-TR", localService: true, default: true},
    {name: "it-IT", voiceURI: "it-IT", lang: "it-IT", localService: true, default: true},
    {name: "pt-PT", voiceURI: "pt-PT", lang: "pt-PT", localService: true, default: true},
    {name: "fr-FR", voiceURI: "fr-FR", lang: "fr-FR", localService: true, default: true},
    {name: "ru-RU", voiceURI: "ru-RU", lang: "ru-RU", localService: true, default: true},
    {name: "es-MX", voiceURI: "es-MX", lang: "es-MX", localService: true, default: true},
    {name: "zh-HK", voiceURI: "zh-HK", lang: "zh-HK", localService: true, default: true},
    {name: "sv-SE", voiceURI: "sv-SE", lang: "sv-SE", localService: true, default: true},
    {name: "hu-HU", voiceURI: "hu-HU", lang: "hu-HU", localService: true, default: true},
    {name: "zh-TW", voiceURI: "zh-TW", lang: "zh-TW", localService: true, default: true},
    {name: "es-ES", voiceURI: "es-ES", lang: "es-ES", localService: true, default: true},
    {name: "zh-CN", voiceURI: "zh-CN", lang: "zh-CN", localService: true, default: true},
    {name: "nl-BE", voiceURI: "nl-BE", lang: "nl-BE", localService: true, default: true},
    {name: "en-GB", voiceURI: "en-GB", lang: "en-GB", localService: true, default: true},
    {name: "ar-SA", voiceURI: "ar-SA", lang: "ar-SA", localService: true, default: true},
    {name: "ko-KR", voiceURI: "ko-KR", lang: "ko-KR", localService: true, default: true},
    {name: "cs-CZ", voiceURI: "cs-CZ", lang: "cs-CZ", localService: true, default: true},
    {name: "en-ZA", voiceURI: "en-ZA", lang: "en-ZA", localService: true, default: true},
    {name: "en-AU", voiceURI: "en-AU", lang: "en-AU", localService: true, default: true},
    {name: "da-DK", voiceURI: "da-DK", lang: "da-DK", localService: true, default: true},
    {name: "en-US", voiceURI: "en-US", lang: "en-US", localService: true, default: true},
    {name: "en-IE", voiceURI: "en-IE", lang: "en-IE", localService: true, default: true},
    {name: "he-IL", voiceURI: "he-IL", lang: "he-IL", localService: true, default: true},
    {name: "hi-IN", voiceURI: "hi-IN", lang: "hi-IN", localService: true, default: true},
    {name: "el-GR", voiceURI: "el-GR", lang: "el-GR", localService: true, default: true},
    {name: "ja-JP", voiceURI: "ja-JP", lang: "ja-JP", localService: true, default: true}
];

function populateVoices() {
    // wait first
    var watch = setTimeout(function() {
        _voices = speechSynthesis.getVoices();

        if (_voices.length === 0) {
            // use hard-coded list because speechSynthesis.getVoices() didn't work
            _voices = _iOSvoices;
        }

        clearTimeout(watch);
    }, 100);
}

ОБНОВЛЕНИЕ

iOS 9 несколько лучше справляется с этим, если убрать задержку.

function _populateVoices() {
    _voices = speechSynthesis.getVoices();

    if (_voices.length === 0) {
        // use hard-coded list because speechSynthesis.getVoices() didn't work
        _voices = _iOS9voices;
    }
}

var _iOS9voices = [
  { name: "Maged", voiceURI: "com.apple.ttsbundle.Maged-compact", lang: "ar-SA", localService: true, "default": true },
  { name: "Zuzana", voiceURI: "com.apple.ttsbundle.Zuzana-compact", lang: "cs-CZ", localService: true, "default": true },
  { name: "Sara", voiceURI: "com.apple.ttsbundle.Sara-compact", lang: "da-DK", localService: true, "default": true },
  { name: "Anna", voiceURI: "com.apple.ttsbundle.Anna-compact", lang: "de-DE", localService: true, "default": true },
  { name: "Melina", voiceURI: "com.apple.ttsbundle.Melina-compact", lang: "el-GR", localService: true, "default": true },
  { name: "Karen", voiceURI: "com.apple.ttsbundle.Karen-compact", lang: "en-AU", localService: true, "default": true },
  { name: "Daniel", voiceURI: "com.apple.ttsbundle.Daniel-compact", lang: "en-GB", localService: true, "default": true },
  { name: "Moira", voiceURI: "com.apple.ttsbundle.Moira-compact", lang: "en-IE", localService: true, "default": true },
  { name: "Samantha (Enhanced)", voiceURI: "com.apple.ttsbundle.Samantha-premium", lang: "en-US", localService: true, "default": true },
  { name: "Samantha", voiceURI: "com.apple.ttsbundle.Samantha-compact", lang: "en-US", localService: true, "default": true },
  { name: "Tessa", voiceURI: "com.apple.ttsbundle.Tessa-compact", lang: "en-ZA", localService: true, "default": true },
  { name: "Monica", voiceURI: "com.apple.ttsbundle.Monica-compact", lang: "es-ES", localService: true, "default": true },
  { name: "Paulina", voiceURI: "com.apple.ttsbundle.Paulina-compact", lang: "es-MX", localService: true, "default": true },
  { name: "Satu", voiceURI: "com.apple.ttsbundle.Satu-compact", lang: "fi-FI", localService: true, "default": true },
  { name: "Amelie", voiceURI: "com.apple.ttsbundle.Amelie-compact", lang: "fr-CA", localService: true, "default": true },
  { name: "Thomas", voiceURI: "com.apple.ttsbundle.Thomas-compact", lang: "fr-FR", localService: true, "default": true },
  { name: "Carmit", voiceURI: "com.apple.ttsbundle.Carmit-compact", lang: "he-IL", localService: true, "default": true },
  { name: "Lekha", voiceURI: "com.apple.ttsbundle.Lekha-compact", lang: "hi-IN", localService: true, "default": true },
  { name: "Mariska", voiceURI: "com.apple.ttsbundle.Mariska-compact", lang: "hu-HU", localService: true, "default": true },
  { name: "Damayanti", voiceURI: "com.apple.ttsbundle.Damayanti-compact", lang: "id-ID", localService: true, "default": true },
  { name: "Alice", voiceURI: "com.apple.ttsbundle.Alice-compact", lang: "it-IT", localService: true, "default": true },
  { name: "Kyoko", voiceURI: "com.apple.ttsbundle.Kyoko-compact", lang: "ja-JP", localService: true, "default": true },
  { name: "Yuna", voiceURI: "com.apple.ttsbundle.Yuna-compact", lang: "ko-KR", localService: true, "default": true },
  { name: "Ellen", voiceURI: "com.apple.ttsbundle.Ellen-compact", lang: "nl-BE", localService: true, "default": true },
  { name: "Xander", voiceURI: "com.apple.ttsbundle.Xander-compact", lang: "nl-NL", localService: true, "default": true },
  { name: "Nora", voiceURI: "com.apple.ttsbundle.Nora-compact", lang: "no-NO", localService: true, "default": true },
  { name: "Zosia", voiceURI: "com.apple.ttsbundle.Zosia-compact", lang: "pl-PL", localService: true, "default": true },
  { name: "Luciana", voiceURI: "com.apple.ttsbundle.Luciana-compact", lang: "pt-BR", localService: true, "default": true },
  { name: "Joana", voiceURI: "com.apple.ttsbundle.Joana-compact", lang: "pt-PT", localService: true, "default": true },
  { name: "Ioana", voiceURI: "com.apple.ttsbundle.Ioana-compact", lang: "ro-RO", localService: true, "default": true },
  { name: "Milena", voiceURI: "com.apple.ttsbundle.Milena-compact", lang: "ru-RU", localService: true, "default": true },
  { name: "Laura", voiceURI: "com.apple.ttsbundle.Laura-compact", lang: "sk-SK", localService: true, "default": true },
  { name: "Alva", voiceURI: "com.apple.ttsbundle.Alva-compact", lang: "sv-SE", localService: true, "default": true },
  { name: "Kanya", voiceURI: "com.apple.ttsbundle.Kanya-compact", lang: "th-TH", localService: true, "default": true },
  { name: "Yelda", voiceURI: "com.apple.ttsbundle.Yelda-compact", lang: "tr-TR", localService: true, "default": true },
  { name: "Ting-Ting", voiceURI: "com.apple.ttsbundle.Ting-Ting-compact", lang: "zh-CN", localService: true, "default": true },
  { name: "Sin-Ji", voiceURI: "com.apple.ttsbundle.Sin-Ji-compact", lang: "zh-HK", localService: true, "default": true },
  { name: "Mei-Jia", voiceURI: "com.apple.ttsbundle.Mei-Jia-compact", lang: "zh-TW", localService: true, "default": true }
];

Я реализую эту функциональность JS для своего сайта для настольных компьютеров, Android и iOS.

Насколько я понял, для мобильных устройств произнесение речи регулируется ОБЩИМИ НАСТРОЙКАМИ ТЕЛЕФОНА, поэтому пользователю необходимо перейти в настройку TTS и выбрать предпочтительный голос для указания языка, а также, возможно, загрузить хороший голос. Например, iOS Alex voice закрыт до 800 МБ и работает в автономном режиме. Список поддерживаемых языков вы можете найти на сайте поставщика для конкретной версии Android или iOS.

Итак, наконец, мы имеем:

Во-первых, нам нужна функция для проверки мобильного устройства:

// Обнаружение мобильного браузера

window.mobilecheck = function() {
    var check = false;
    (function(a){if(/(android|bb\d+|meego).+mobile|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|mobile.+firefox|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|series(4|6)0|symbian|treo|up\.(browser|link)|vodafone|wap|windows ce|xda|xiino/i.test(a)||/1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s\-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw\-(n|u)|c55\/|capi|ccwa|cdm\-|cell|chtm|cldc|cmd\-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc\-s|devi|dica|dmob|do(c|p)o|ds(12|\-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(\-|_)|g1 u|g560|gene|gf\-5|g\-mo|go(\.w|od)|gr(ad|un)|haie|hcit|hd\-(m|p|t)|hei\-|hi(pt|ta)|hp( i|ip)|hs\-c|ht(c(\-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i\-(20|go|ma)|i230|iac( |\-|\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |\/)|klon|kpt |kwc\-|kyo(c|k)|le(no|xi)|lg( g|\/(k|l|u)|50|54|\-[a-w])|libw|lynx|m1\-w|m3ga|m50\/|ma(te|ui|xo)|mc(01|21|ca)|m\-cr|me(rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(\-| |o|v)|zz)|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)\-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|\-([1-8]|c))|phil|pire|pl(ay|uc)|pn\-2|po(ck|rt|se)|prox|psio|pt\-g|qa\-a|qc(07|12|21|32|60|\-[2-7]|i\-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55\/|sa(ge|ma|mm|ms|ny|va)|sc(01|h\-|oo|p\-)|sdk\/|se(c(\-|0|1)|47|mc|nd|ri)|sgh\-|shar|sie(\-|m)|sk\-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h\-|v\-|v )|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl\-|tdg\-|tel(i|m)|tim\-|t\-mo|to(pl|sh)|ts(70|m\-|m3|m5)|tx\-9|up(\.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|\-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(\-| )|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|yas\-|your|zeto|zte\-/i.test(a.substr(0,4)))check = true})(navigator.userAgent||navigator.vendor||window.opera);
    return check;
};

Во-вторых, часть инициализации, часть кода Angular, которую вы можете изменить в своем проекте, поэтому у меня есть SpeechSynthesisService($log, $q, $cookies, $timeout, commonService) со следующим кодом:

    var languagesEnglish = {
        'en-US' : {desc: 'English (United States)', voices: []},
        'en-GB' : {desc: 'English (United Kingdom)', voices: []}
    };
    // 'ru_RU' android codes
    var languagesRussian = {
        'ru-RU' : {desc: 'Russian', voices: []}
    };

    var speakerEng = {lang: 'en-US', desc: 'English (United States)', voice: null};
    var speakerRu = {lang: 'ru-RU', desc: 'Russian', voice: null};
    var englishSpeakers = [];

    if ('speechSynthesis' in window) {
        if (window.mobilecheck()) {
            englishSpeakers = prepareEnglishSpeakers();
            initVoicesJob.resolve();
        }

        window.speechSynthesis.onvoiceschanged = function() {
            if (initVoicesJob.promise.$$state.status) return;
            $log.debug(currentTime() + " InitVoice: onvoiceschanged");
            desktopInitializeVoices();
            englishSpeakers = prepareEnglishSpeakers();
            initVoicesJob.resolve();
        };
    }

Итак, в приложении у меня есть активный SpeakerEng и активный SpeakerRu, для мобильной версии массивы voices пусты.

В-третьих, когда я хочу, чтобы приложение произнесло какой-либо текст, я вызываю следующую функцию:

    function sayAnyText(speaker, voiceVolume, text) {
        if (isNotSupportSpeechSynthesis()) {
            var tJob = $q.defer();
            $timeout(function() {
                tJob.resolve();
            });
            return tJob.promise;
        }

        var phrases = [];
        if (text.constructor === Array) {
            for (var ti = 0, tn = text.length; ti<tn; ti++) {
                var iPhrases = splitToPhrase(text[ti]);
                // concat arrays, fast method: https://stackoverflow.com/questions/4156101/javascript-push-array-values-into-another-array
                for (var pi = 0, pn = iPhrases.length; pi<pn; pi++) {
                    phrases.push(iPhrases[pi]);
                }
            }
        } else {
            phrases = splitToPhrase(text);
        }

        speechSynthesis.cancel();
        stopSpeechJob();
        startSpeechJob();

        for (var i = 0, n = phrases.length; i < n; i++) {
            var msg = new SpeechSynthesisUtterance();
            msg.lang = speaker.lang;
            if (speaker.voice) msg.voice = speaker.voice;
            msg.rate = 1;
            msg.volume = voiceVolume;
            msg.text = phrases[i];

            if (i + 1 == n) {
                msg.onend = function(event) {
                    $log.debug(currentTime() + "Speech ends: ", event.currentTarget.text, event);
                    stopSpeechJob();
                };
                msg.onerror = function(event) {
                    $log.error(currentTime() + "Speech ends with error: ", event.currentTarget.text, event);
                    stopSpeechJob();
                };
            } else {
                msg.onend = function(event) {
                    $log.debug(currentTime() + "Speech ends: ", event.currentTarget.text, event);
                };
                msg.onerror = function(event) {
                    $log.error(currentTime() + "Speech ends with error: ", event.currentTarget.text, event);
                };
            }

            speechSynthesis.speak(msg);
        }

        return getSpeechJob();
    }

Основная часть следующая:

msg.lang = speaker.lang;
if (speaker.voice) msg.voice = speaker.voice;

1.мы всегда устанавливаем язык 2.для настольной версии динамик имеет голос, для мобильной версии нет.

p.s. Я протестировал его, и он работает на iOS9 (iPhone 6), Android 5.0.1 (Samsung Galaxy 4) и настольном Chrome 48.0. Не стесняйтесь спрашивать, если у вас есть какие-либо вопросы или вам нужно больше кода.