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Not yet - this was our first technical blog post. You can check out the BoldVoice app and test out the sound-level feedback yourself. Or watch this app walkthrough video - https://www.youtube.com/watch?v=3Sv5K4Z9P4c

As someone who took English classes for years growing up, I wish that were the case. In fact, most teachers don't really know how to teach pronunciation. Also, in a typical group class setting, it's challenging to give each student one-on-one feedback. On BoldVoice, we solve that with 1) unlimited instant feedback from sound-level AI - your most patient coach. 2) in-depth video lessons from the best coaches in the world (Hollywood accent coaches). I'm a cofounder of BoldVoice, by the way. :)

Native speakers are less helpful at this than you might think. Speech coaches are absolutely the way to go, but they're outside the price range for most people ($200+/hr for a good coach). BoldVoice gives coach-level feedback and instruction at a price point that everyone can access, on demand.

"If Victor wanted to move beyond this point, the sound-by-sound phonetic analysis available in the BoldVoice app would allow him to understand the patterns in pronunciation and stress that contribute to Eliza’s accent and teach him how to apply them in his own speech."

Indeed Victor would likely receive a personalized lesson and practice on the NG sound on the app.

If you're still actively using the app, the voice will be retained and processed so that you can receive instant feedback, and also so that you receive additional personalized practice items and video lessons based on your speech needs. If you don't want the samples saved "in perpetuity", you can request them to be deleted once you decide that you're done with the application. Hope this helps!

You can reach out and request your data to be deleted at any time.

Thanks for checking it out! We're 100% in on English for now, but some day!

Gotcha, totally fair to be discerning with your data these days.

Hi, founder here! We're a YC-funded education app with over 1 million downloads, currently #7 on the Education chart of the App Store. The goal of the accent oracle tool is to help more non-native English speakers find out about BoldVoice. While it's important as consumers to be aware of data privacy with AI tools in general, I want to set the record straight that that's not the point of what we're doing here. But great to hear that we got your accent right :)

Thanks - we're aware! There's also a concept of a general American accent. Since the app is for non-native English speakers, a general American accent is the goal more so than a regional accent. We built the app together with professional accent coaches -- if you're interested in our methodology, you can learn more on boldvoice.com.

BoldVoice.com/privacy

Conspiracy theories are fun! But we're a language learning app (YC s21). We help non native English speakers to work on their accents so they can speak English confidently. The accent oracle is a marketing tool for us to get in front of new users.

Nice suggestion! BoldVoice focuses on helping non-native English speakers to learn the American accent, so we tailored the accent oracle to non-native accents specifically.

Fun to see this in the wild! I'm one of the co-founders of BoldVoice, AMA :) p.s. I'm Albanian and it guesses either Albanian or English for me, sometimes randomly Spanish.

Not true - from the makers :)

Check out BoldVoice (YC S21) - I'm biased as a cofounder :) We built this for immigrants who want to improve their spoken English, with a focus on pronunciation. You will get videos from speech/accent coaches + feedback from AI as you speak. The inspiration was my own experience as an immigrant in the US - I was struggling with speaking confidently, even though on paper my English was good. BoldVoice is what I wish I had back then - hope it can be helpful to you too.

Other than that - practice speaking as much as you can! Also, watch native speakers and focus on how they move their mouths to make sounds. Try to copy their speech cadence and repeat the phrases in their pronunciation and musicality. This is called shadowing and can be very effective (and free!)

There are some rules in English pronunciation, but there are a ton of exceptions and inconsistencies. To give you an example of a reliable rule: when a plural word ends in a vowel or a voiced consonant, the "s" is pronounced as "z" (eyes, dogs), but when it ends in an unvoiced consonant, it's pronounced as "s" (cats). Our BoldVoice, we like to teach these rules because they are quick wins for most people. Then, a lot of the hard work comes in practicing and memorizing the many, many exceptions.

This is 100% correct. Muscles that aren't used in your mouth/articulators (because your native language doesn't require them) atrophy over time. It is possible to strengthen these muscles with isolated practice -- on BoldVoice we have coach videos where they give you "reps" of muscle movements (such as 20 tongue-ups). We call it "a gym for your mouth" :D It's hard work, but it's the best way to get results.

Oops, that's literally the name of one of our lessons "Practice your consonant skills" hence the awkward string, but I see what you mean. We'll look into handling those more elegantly because I agree, for English learners everything needs to be in perfect English.

And we have a placement test -- it's in the Resources tab, under "Assessment". Lmk how it works for you!

Re: 404... don't know what you're talking about ;)

Oh, you're right! Fixed it, thanks!

Haha, you'd be surprised how many Bostonians we have on our app exactly for this, although we made this for ESL speakers...

Yep, exactly! That's called a "flap T/D" in linguistics.

I'm based in the US, where it's spelled without the "u". Quite a few examples of this spelling difference - humo(u)r, behavio(u)r etc. Oh and "spelt" is "spelled". Isn't English fun! :)

Hey, thanks for your interest in checking out the app :) Weird that you don't see the Pricing info on that page - did you tap "Pricing" at the top bar, and then tap the first question "How much does BoldVoice cost?" Either way, the app costs $150/year or $25/month (or your local equivalent). We have a free 7-day trial so you can try it before you commit.

Thanks! For now, we're laser-focused on English since it's the language that 1 billion people are learning (as non-native speakers). But we'd love to add more languages in the future, stay tuned!

As a non-native English speaker, the "randomness" of English pronunciation has been a source of frustration for me for many years.

I realized there are two types of issues: 1. Some sounds in English don't exist in other languages and you have to learn them "from scratch". For example the "flap T" in butter. Or the particular American "r" (constrast it to the Spanish rolled r for instance). 2. Certain sounds I DID know how to make, but didn't know WHEN to make them because spelling is so unreliable. For example, a word like "color" has two "o" letters but neither of them makes an "ou" sound - in fact they make two distinct sounds. For these, I realized you just have to practice it until your mouth "remembers" how to pronounce the word differently (i.e. creates muscle memory).

Youglish is great for fine-tuning specific words.

I also recommend BoldVoice (disclaimer: I'm a cofounder). We were YC S21 and built the app to help non-native English speakers improve their pronunciation with videos from Hollywood speech coaches and instant feedback via speech recognition ML.

That's an interesting use case that we could potentially explore down the line, thanks for sharing!

Right now, we're focusing on non-native English speakers, as it's a problem that we personally understand best -- as well as a very large market.

Hey there, thanks for checking us out!

The error that you pointed out has been fixed, and now the sentence matches the coach's sample -- feel free to double check this on the app. Both "part of" and "a part of" are grammatically correct. That said, we definitely agree that the coach sample should match the written sentence.

By the way, potential issues such as these is exactly why we added the flag feature on the practice cards, through which you can report any errors in spelling or other types of issues. We strive for 100% accuracy, but there are still real people behind this making all the content, so we appreciate user input to make things always better.

If you would like to delete your account, we can help. Just email us at support@boldvoice.com with your account details.

We’re Anada and Ilya, the co-founders of BoldVoice (https://www.boldvoice.com/). BoldVoice is an accent coaching app that helps non-native speakers learn and practice the standard American accent.

As immigrants to the US, we’ve personally experienced that having a foreign accent can affect your confidence and job opportunities (by as much as 20%, according to studies). So we built this app to help non-native English speakers like us.

Users start by watching 3-5 minute video lessons to learn new concepts from Hollywood speech coaches, like Ron Carlos, such as how to pronounce tricky sounds, or how to properly use intonation. They then spend around 10 minutes a day improving their accent skills by going through words, sentences, and conversations, with real-time feedback on their accent from the pronunciation assessment AI model.

The user tells us what their native language is during onboarding, and we serve them content on the typical accent and speech challenges that a person from that linguistic background faces in English. Regarding the feedback part, the user speaks certain words and sentences into the app, we record it, we compare each sound to the "correct" sound according to our library, and we spit out a score and a recommendation for what they should change.

The vast majority of language learning apps focus on grammar and vocabulary, not on speaking. Even when they do speaking, they score it broadly as "right" or "wrong" with no feedback on how you can improve. Learning an accent is all about muscle memory formed in the mouth/lips/teeth, not memorization in the brain—this is what most language learning apps get wrong.

Practicing the physical skills required to acquire an accent is a lot like working out, and with consistent work come results -- usually you can start seeing a difference within 2 weeks. Since launching 8 weeks ago, we’ve had startup founders, globally distributed teams, BPO firms and even middle school Spanish teachers pick up BoldVoice to start working on their accents and feel more confident in English.

We'd love to hear your experiences with accents and your comments about BoldVoice!