Any voices with "(natual)" fail to be used to speak

[MRYingLEE]

Describe the bug
Any voices with "(natual)" fail to be used to speak

To Reproduce
Steps to reproduce the behavior:
In your online demo, try to pick up any voice with "(natual)", such as "Maisie". Then nothing is spoke out while other non-natual voices work.

I tested on Microsoft Edge v.121.

Expected behavior
All voices can be used.

Desktop (please complete the following information):

• OS: Windows 11
• Browser: Edge
• Version: 121

I tried to following

// Get the voices available 
const voices = window.speechSynthesis.getVoices();

const textToSpeak = "This project was created, because it's always a struggle to get the synthesis part of Web Speech API running on most major browsers.";
// Create a new SpeechSynthesisUtterance object
const utterance = new SpeechSynthesisUtterance(textToSpeak);
// Find the voice that includes "Maise"
let maiseVoice = voices.find(voice => voice.name.includes("Maisie"));

if (maiseVoice === undefined)
  maiseVoice=voices[0];
// Set the voice and other parameters
utterance.voice = maiseVoice; // Use the first voice available
utterance.pitch = 1;
utterance.rate = 1; 

// Speak the text
window.speechSynthesis.speak(utterance);

in https://playcode.io/1699188. The voice works well.

So this must be a new bug for a few months ago every voice worked.

[jankapunkt]

Thank you @MRYingLEE for reporting this. Is there any notable output in the debug log panel in the Demo page when attempting to play these voices?

[MRYingLEE]

For "Maisie", the debug log is as the following:
is android: false
is firefox: false
is safari: false
init: start
is android: false
is firefox: false
is safari: false
init: voices
init: voices (onvoiceschanged)
voices loaded: 312
init: complete
find unique languages...
found 74 languages
populate languages to select component
attach events, cleanup
voices loaded: 312
init speak
utterance: voice=Microsoft Elimu Online (Natural) - English (Tanzania) volume=1 rate=1 pitch=1
event: start
resumeInfinity isSpeaking=true isPaused=false
event: end
speak complete
init speak
utterance: voice=Microsoft Elimu Online (Natural) - English (Tanzania) volume=1 rate=1 pitch=1
event: start
resumeInfinity isSpeaking=true isPaused=false
event: end
speak complete
init speak
utterance: voice=Microsoft Elimu Online (Natural) - English (Tanzania) volume=1 rate=1 pitch=1
event: start
resumeInfinity isSpeaking=true isPaused=false
event: end
speak complete
init speak
utterance: voice=Microsoft Elimu Online (Natural) - English (Tanzania) volume=1 rate=1 pitch=1
event: start
resumeInfinity isSpeaking=true isPaused=false
event: end
speak complete
init speak
utterance: voice=Microsoft George - English (United Kingdom) volume=1 rate=1 pitch=1
event: start
resumeInfinity isSpeaking=true isPaused=false
event: boundary
event: boundary
event: boundary
event: boundary
event: boundary
event: boundary
event: boundary
event: boundary
event: boundary
event: boundary
event: boundary
event: boundary
event: boundary
event: boundary
event: boundary
event: boundary
event: boundary
resumeInfinity isSpeaking=true isPaused=false
event: boundary
event: boundary
event: boundary
event: boundary
event: boundary
event: boundary
event: boundary
event: end
speak complete
init speak
utterance: voice=Microsoft Maisie Online (Natural) - English (United Kingdom) volume=1 rate=1 pitch=1
event: start
resumeInfinity isSpeaking=true isPaused=false
event: end
speak complete
init speak
utterance: voice=Microsoft Maisie Online (Natural) - English (United Kingdom) volume=1 rate=1 pitch=1
event: start
resumeInfinity isSpeaking=true isPaused=false
event: end
speak complete

=====================================
For Microsoft George - English (United Kingdom), the debug log is as the following:

DEBUG LOG
is android: false
is firefox: false
is safari: false
init: start
is android: false
is firefox: false
is safari: false
init: voices
init: voices (onvoiceschanged)
voices loaded: 312
init: complete
find unique languages...
found 74 languages
populate languages to select component
attach events, cleanup
voices loaded: 312
init speak
utterance: voice=Microsoft Elimu Online (Natural) - English (Tanzania) volume=1 rate=1 pitch=1
event: start
resumeInfinity isSpeaking=true isPaused=false
event: end
speak complete
init speak
utterance: voice=Microsoft Elimu Online (Natural) - English (Tanzania) volume=1 rate=1 pitch=1
event: start
resumeInfinity isSpeaking=true isPaused=false
event: end
speak complete
init speak
utterance: voice=Microsoft Elimu Online (Natural) - English (Tanzania) volume=1 rate=1 pitch=1
event: start
resumeInfinity isSpeaking=true isPaused=false
event: end
speak complete
init speak
utterance: voice=Microsoft Elimu Online (Natural) - English (Tanzania) volume=1 rate=1 pitch=1
event: start
resumeInfinity isSpeaking=true isPaused=false
event: end
speak complete
init speak
utterance: voice=Microsoft George - English (United Kingdom) volume=1 rate=1 pitch=1
event: start
resumeInfinity isSpeaking=true isPaused=false
event: boundary
event: boundary
event: boundary
event: boundary
event: boundary
event: boundary
event: boundary
event: boundary
event: boundary
event: boundary
event: boundary
event: boundary
event: boundary
event: boundary
event: boundary
event: boundary
event: boundary
resumeInfinity isSpeaking=true isPaused=false
event: boundary
event: boundary
event: boundary
event: boundary
event: boundary
event: boundary
event: boundary
event: end
speak complete
init speak
utterance: voice=Microsoft Maisie Online (Natural) - English (United Kingdom) volume=1 rate=1 pitch=1
event: start
resumeInfinity isSpeaking=true isPaused=false
event: end
speak complete
init speak
utterance: voice=Microsoft Maisie Online (Natural) - English (United Kingdom) volume=1 rate=1 pitch=1
event: start
resumeInfinity isSpeaking=true isPaused=false
event: end
speak complete
init speak
utterance: voice=Microsoft George - English (United Kingdom) volume=1 rate=1 pitch=1
event: start
resumeInfinity isSpeaking=true isPaused=false
event: boundary
event: boundary
event: boundary
event: boundary
event: boundary
event: boundary
event: boundary
event: boundary
event: boundary
event: boundary
event: boundary
event: boundary
event: boundary
event: boundary
event: boundary
event: boundary
event: boundary
event: boundary
resumeInfinity isSpeaking=true isPaused=false
event: boundary
event: boundary
event: boundary
event: boundary
event: boundary
event: boundary
event: end
speak complete

[jankapunkt]

I can confirm this, however I can't find the root cause, I need more investigation on this, especially since there is a setup that works.

[jankapunkt]

@MRYingLEE coming back to this I found the root cause and fixed it in #254

Please do the following:

• open the DEMO page, make sure your Edge browser has cache emptied in order to have the demo loading the latest js
• select one of the (Natural) voices
• speak some text
• it should work!

if it's not working:

• make sure the log when speaking contains isMsNatural=true
• make sure the log DOES NOT contain resumeInfinity
• otherwise make sure you emptied your browser cache, close the browser and reopen until it's working

Finally:

• if all working, please approve the pull request at fix: prevent resumeInfinity on Edge/MS (Natural) voices #254 so I can merge and publish this fix in a new release

[MRYingLEE]

The issue has gone with the new version.
Thanks.