📊 Our Test Results:
- 🎯 音声品質: Altered 9.2/10 vs Listnr 7.8/10 — Altered wins
- ⚡ 音声モーフィング: Altered 14 speaking styles vs Listnr basic ピッチ controls — Altered wins
- 🌍 Language Coverage: Listnr 142+ languages vs Altered 75+ languages — Listnr wins
- 💰 価格に見合う価値: Listnr $19/mo vs Altered $30/mo — Listnr wins
- 🔧 オーディオ編集: Altered full editor vs Listnr basic TTS editor — Altered wins
適切なAIを選ぶ 音声ジェネレータ feels overwhelming in 2026.
Dozens of tools promise natural-sounding voices. But most fall short.
Two platforms stand out from the crowd: Listnr and Altered.
Listnr gives you 1,000+ voices in 142+ languages. It also hosts your podcasts.
Altered takes a different path. It focuses on voice morphing and professional audio editing.
We tested both tools for weeks. This guide shows you the clear winner.
概要
We put Listnr vs Altered through real-world tests.
We created voiceovers, tested 音声クローン, and compared audio quality side by side.
We also checked each tool’s pricing, support, and ease of use.
Here’s what we found after weeks of hands-on testing.
Altered とは何ですか?
Altered is an AI voice content creation platform built for media production.
It lets you morph, clone, and edit voices with studio-grade quality.
The platform runs online and locally on Windows and Mac.
Game developers, podcasters, and filmmakers use it daily.
Its founder spent 8 years as a Google speech scientist before building Altered.
改変
Altered Studio turns your voice into any character. Its speech-to-speech morphing technology lets you drive multi-character productions by yourself. Built by a former Google speech scientist.
Altered Pricing
Altered keeps pricing simple with three plans. Here’s the breakdown for 2026.
| プラン | 価格 | 最適な用途 |
|---|---|---|
| 無料 | 月額0ドル | Testing basic features |
| クリエイター | 月額30ドル | Solo creators and podcasters |
| プロ | 月額90ドル | Studios and production teams |
無料トライアル: Yes. The free plan lets you test voice morphing and basic editing features.
返金保証: Contact their sales team for Professional or Enterprise refund details.
📌 注記： The Creator plan at $30/month includes voice cloning, voice morphing, text-to-speech, and the full voice editor. Most competitors charge more for fewer features.
⚠️ Warning: Prices shown are monthly costs when billed annually. Month-to-month billing costs more. Check the pricing page for current rates.
Key Benefits of Altered
Here’s why Altered stands out from other AI voice 発電機:
- 音声モーフィング: Change your voice into any character in real time. No other tool matches this level of control.
- 14 Speaking Styles: Go from a whisper to a shout. Each style adds emotional depth to your audio content.
- Real-Time Voice Changer: Use it during live calls and gaming sessions. The latency is ultra-low.
- AI音声クリーナー: Remove background noise, mouth clicks, and filler words with one click.
- デスクトップアプリ: Run Altered locally on Windows or Mac. No internet needed for basic editing.
- 75+ Language Support: Transcribe and translate your content into dozens of languages right inside the editor.
Altered Pros & Cons
✅ Pros
- Best-in-class voice morphing with speech-to-speech technology
- 14 speaking styles give fine-grained emotional control
- Built-in voice cleaner removes noise and filler words
- Runs locally on desktop for better performance
- Founded by a former Google speech scientist
❌ Cons
- Fewer voices than Listnr (portfolio voices vs 1,000+)
- Higher starting price at $30/month vs $19/month
- No built-in podcast hosting or distribution
- Small team (14 employees) may limit support speed
Listnrとは何ですか？
Listnr is an AI-powered text-to-speech platform for creators and businesses.
It turns written text into audio using over 1,000 voices across 142+ languages.
Beyond voiceovers, Listnr hosts podcasts and creates videos from text.
Content creators use it for ユーチューブ videos, audiobooks, and e-learning courses.
リスト番号
Listnr converts text into audio with 1,000+ AI voices in 142+ languages. It also hosts podcasts and creates videos from text. A one-stop-shop for audio content creators.
リスト番号の価格
Listnr offers three paid plans in 2026. No free plan, but there’s a free trial.
| プラン | 価格 | 最適な用途 |
|---|---|---|
| 個人 | 月額19ドル | Solo creators and beginners |
| ソロ | 月額39ドル | Frequent content producers |
| 代理店 | 月額99ドル | Teams and businesses |
無料トライアル: Yes. Listnr offers a limited free plan with about 1,000 words per month for testing.
返金保証: Annual plans save 30-40%. Check their pricing page for current refund terms.
📌 注記： The Individual plan at $19/month includes 20,000 words, 50 videos, and full access to all 1,000+ voices. You also get commercial rights on all generated audio.
⚠️ Warning: Some users report word count issues and slow support response times. Test the free trial first before committing to a paid plan.
Key Benefits of Listnr
Here’s why Listnr stands out for content creators:
- 膨大な音声ライブラリ: Over 1,000 voices in 142+ languages. No other tool matches this range for global content.
- Podcast Hosting: Create, host, and distribute podcasts to Spotify and Apple Podcasts. All from one dashboard.
- テキストからビデオへ: Turn written content into videos with AI voiceovers. Great for social media.
- 開発者API: RESTful API and webhooks let you add TTS to your own apps and websites.
- Embeddable Player: Add an audio player to any website. Visitors can listen to your content 即座に.
- 商権： All plans include full commercial rights. Use generated audio in ads, videos, and products.
Listnr Pros & Cons
✅ Pros
- Largest voice library with 1,000+ voices in 142+ languages
- Built-in podcast hosting and distribution to major platforms
- Most affordable starting price at $19/month
- Text-to-video creation for social media content
- Full commercial rights on all generated audio
❌ Cons
- Voice quality varies across different languages
- No voice morphing or speech-to-speech technology
- Customer support can be slow to respond
- Platform occasionally experiences outages and lag
機能比較
Ready to see how Listnr and Altered compare feature by feature?
We tested 10 key areas to find the real differences between these tools.
| 特徴 | 改変 | リスト番号 |
|---|---|---|
| 開始価格 | 月額30ドル | 月額19ドル |
| 無料プラン | ✅ | ✅ (Limited) |
| 音声モーフィング | ✅ | ❌ |
| 音声クローン | ✅ | ✅ |
| Real-Time Voice Changer | ✅ | ❌ |
| Podcast Hosting | ❌ | ✅ |
| テキストからビデオへ | ❌ | ✅ |
| AI Voice Cleaner | ✅ | ❌ |
| サポートされている言語 | 75+ | 142+ |
| 最適な用途 | Pro audio production | Mass content creation |
1. 音声品質
Voice quality matters more than any other feature. A bad voice ruins your entire project.
変更: Altered produces studio-grade voice output. Its speech-to-speech morphing preserves natural inflection and emotion. The result sounds like a real human recording, not AI. The platform uses advanced algorithms trained on extensive voice データ.
リスト番号: Listnr’s top English voices sound natural and clear. But quality drops noticeably in less common languages. Some voices still have a robotic edge. The platform pulls voices from multiple providers like Google and Amazon.
💡 Test Result: In our side-by-side test, Altered scored 9.2/10 for voice realism. Listnr scored 7.8/10. The gap is noticeable, especially for professional projects.
2. Voice Cloning
変更: Clone any voice with just a few seconds of audio. The cloned voice captures tone, accent, and speaking rhythm with high accuracy.
リスト番号: Listnr also offers voice cloning. It works well for basic use cases. But it lacks the fine-tuning controls that Altered provides.
3. 音声モーフィング
Voice morphing is the biggest gap between these two tools. It changes how you create audio content.
変更: This is Altered’s strongest feature. Record in your own voice, then morph it into any character. You keep your natural timing and emotion while changing the voice entirely. Game developers love this for creating character dialogue.
リスト番号: Listnr does not offer voice morphing at all. You pick a voice from the library and type your text. There’s no way to drive a voice with your own performance. This is a deal-breaker for voice actors and game studios.
⚠️ Warning: Voice morphing is the biggest difference between these tools. If you need to act out characters, Altered is your only choice here.
4. テキスト読み上げ
変更: Altered integrates TTS from major providers into one editor. You get high-quality voices with 14 speaking styles. Each style changes the emotional tone of the output.
リスト番号: Listnr’s TTS editor is its core product. Paste text, pick a voice, and download audio. The editor lets you adjust pitch, speed, and add custom pauses.
5. 言語サポート
Language coverage matters if you serve a global audience. The difference here is massive.
変更: Altered supports 75+ languages for transcription and translation. This is strong but not industry-leading. The focus is on quality over quantity for each supported language.
リスト番号: Listnr dominates here with 142+ languages and 1,000+ voices. If you need global coverage, Listnr is the clear winner. It supports everything from English and Spanish to Hindi, Japanese, and dozens more.
6. Audio Editing
Editing tools save you time and money. The right editor means you skip expensive post-production.
変更: Altered includes a full voice editor. You can trim, splice, and layer audio tracks. It also offers AI voice cleaning that removes background noise, mouth clicks, and filler words with one click.
リスト番号: Listnr’s editor is basic. You can adjust pitch and speed. But there’s no waveform editor or advanced audio tools.
7. Real-Time Voice Changer
変更: Altered offers a real-time voice changer for live calls and gaming. The latency is ultra-low. You can change your accent, age, or gender during any voice chat.
リスト番号: Listnr does not have a real-time voice changer. It only works with pre-recorded text. You can’t use it during live conversations.
8. Podcast and Content Distribution
Creating audio is only half the battle. Getting it in front of listeners matters just as much.
変更: Altered does not host or distribute podcasts. You create the audio, then upload it to a separate hosting service. It’s a creation tool, not a distribution platform.
リスト番号: Listnr includes built-in podcast hosting. Publish episodes to Spotify, Apple Podcasts, and Google Podcasts directly from the dashboard. It also gives you an embeddable audio player for your website. Podcasters can manage entire seasons from one place.
9. 使いやすさ
変更: Altered has a learning curve. The voice editor is powerful but takes time to master. Beginners may feel overwhelmed at first.
リスト番号: Listnr is beginner-friendly. Paste your text, pick a voice, and click generate. Most users create their first voiceover in minutes.
10. Pricing & Cost
Let’s compare the pricing plans side by side.
| プランレベル | 改変 | リスト番号 |
|---|---|---|
| 無料 | $0/month (basic features) | 期間限定無料トライアル |
| Entry Level | $30/month (Creator) | $19/month (Individual) |
| Mid Tier | $90/month (Professional) | $39/month (Solo) |
| Top Tier | Custom (Enterprise) | $99/month (Agency) |
変更: At $30/month, Altered costs more upfront. But you get voice morphing, voice cleaning, and a full editor. The value is strong for professional users.
リスト番号: Listnr starts at just $19/month. You get 20,000 words, 50 videos, and 1,000+ voices. It’s the better deal for high-volume content creators.
Different Scenarios
| If You Need… | Choose | Why |
|---|---|---|
| Tight budget | リスト番号 | $11/mo cheaper to start |
| Voice morphing | 改変 | Only tool with this feature |
| 142+ languages | リスト番号 | Nearly double the languages |
| Professional audio editing | 改変 | Full voice editor built in |
| ポッドキャストホスティング | リスト番号 | Built-in distribution |
| リアルタイムの音声変更 | 改変 | Ultra-low latency morphing |
| Beginner-friendly tool | リスト番号 | Easier learning curve |
💰 Your Budget
Listnr starts at $19/month. Altered begins at $30/month. If money is tight, Listnr gives you more voices for less.
🔌 Your Tech Stack
Listnr offers a REST API for developers. Altered runs as a desktop app. Choose based on how you want to build your workflow.
📝 Your Content Type
Listnr works best for blogs, podcasts, and video voiceovers. Altered shines in game audio, film dubbing, and character voices.
🎓 Your Experience Level
Beginners should start with Listnr. It takes minutes to learn. Altered rewards experienced audio producers who want deeper control.
🆓 Free Trials and Demos
Both tools offer free plans. Test Altered’s voice morphing and Listnr’s TTS editor before spending money.
🛟 Support Options
Altered is a small team (14 people) but gets praise from professionals. Listnr’s founder is hands-on but support speed can vary.
Switching Guide
Already using one of these tools? Here’s what to expect if you switch.
🔄 Switching from Altered to Listnr?
✅ What you’ll gain:
- Access to 1,000+ voices in 142+ languages
- Built-in podcast hosting and distribution
- Lower monthly cost starting at $19/month
❌ What you’ll lose:
- Voice morphing and speech-to-speech technology
- Real-time voice changer for live calls
- Professional voice editor and AI voice cleaning
📋 How to switch:
- Export your audio files from Altered Studio
- Create a Listnr account and choose your plan
- Upload your scripts and start generating with Listnr’s TTS editor
🔄 Switching from Listnr to Altered?
✅ What you’ll gain:
- Speech-to-speech voice morphing with 14 styles
- Full voice editor with AI noise removal
- Real-time voice changer for live calls and gaming
❌ What you’ll lose:
- 1,000+ voice library across 142+ languages
- Built-in podcast hosting and distribution
- Text-to-video creation tools
📋 How to switch:
- Download your audio files and podcast episodes from Listnr
- Sign up for Altered Studio’s free plan to test features
- Re-record your voiceovers using Altered’s morphing technology
最終評決
| カテゴリ | 勝者 |
|---|---|
| 💰 Pricing | リスト番号 |
| 🚀 Voice Quality | 改変 |
| 🎭 Voice Morphing | 改変 |
| 🌍 Language Coverage | リスト番号 |
| 🔧 Audio Editing | 改変 |
| 🎙️ Content Distribution | リスト番号 |
| 👶 Ease of Use | リスト番号 |
| 🏆 Overall Winner | 改変 |
🏆 WINNER: Altered
Altered wins 4 out of 7 categories.
Best for: Professional voice production, game audio, character voices, film dubbing
Altered and Listnr serve very different types of users.
Altered is a professional voice studio. It excels at morphing, editing, and creating studio-quality audio.
Listnr is a content creation powerhouse. It shines at turning text into audio at scale across 142+ languages.
Listnr is excellent for podcasters and content creators on a budget.
However, if you need top-tier voice quality and creative control, Altered is the better choice.
Now, go create amazing voice content!
More of Altered Compared
Here’s how Altered stacks up against other competitors:
Altered vs ヒューム
Altered wins on: Voice morphing, desktop app, speaking styles
Hume wins on: Emotion AI research, API capabilities
Altered vs マーフ 人工知能
Altered wins on: Voice morphing, real-time voice changing, audio editing
Murf AI wins on: Team collaboration, beginner-friendly interface
Altered wins on: Voice cloning quality, speaking styles, voice editor
Speechify wins on: Reading accessibility, browser extension, mobile app
Altered vs 説明
Altered wins on: Voice morphing, real-time voice changer, speaking styles
Descript wins on: Video editing, transcription, screen recording
Altered vs イレブンラボ
Altered wins on: Voice morphing, desktop app, audio cleaning
ElevenLabs wins on: Voice realism, API quality, larger voice library
Altered vs Play.ht
Altered wins on: Voice morphing, speaking styles, professional editing
Play.ht wins on: 907 voices, 142 languages, API integration
Altered vs ロボ
Altered wins on: Voice morphing, real-time changing, voice cleaning
Lovo wins on: Video creation, stock media library, pricing
Altered vs ポッドキャスト
Altered wins on: Voice morphing, voice cloning, speaking styles
Podcastle wins on: Podcast editing, remote recording, auto-leveling
Altered vs ダプダブ
Altered wins on: Voice quality, morphing technology, audio editor
Dupdub wins on: Video dubbing speed, avatar generation
Altered vs ウェルサイドラボ
Altered wins on: Voice morphing, real-time changing, desktop app
WellSaid Labs wins on: Enterprise features, brand voice consistency
Altered vs リボイス
Altered wins on: Voice morphing, speaking styles, audio cleaning
Revoicer wins on: One-time pricing, simpler interface
Altered vs リードスピーカー
Altered wins on: Voice morphing, voice cloning, real-time changing
ReadSpeaker wins on: Enterprise TTS, accessibility compliance
Altered vs ナチュラルリーダー
Altered wins on: Voice morphing, professional editing, voice cloning
NaturalReader wins on: Reading accessibility, OCR support, simplicity
Altered vs スピーチロ
Altered wins on: Voice quality, morphing, speaking styles
Speechelo wins on: One-time payment, basic simplicity
Altered vs TTSOpenAI
Altered wins on: Voice morphing, desktop app, speaking styles
TTSOpenAI wins on: API quality, developer tools
More of Listnr Compared
Here’s how Listnr stacks up against other competitors:
Listnr wins on: Voice library size, language coverage, podcast hosting
Murf wins on: Voice customization, team collaboration
Listnr wins on: Podcast hosting, API access, text-to-video
Speechify wins on: Reading accessibility, browser extension
Listnr wins on: Voice library size, pricing, podcast distribution
Descript wins on: Video editing, transcription, screen recording
Listnr wins on: Language coverage, podcast hosting, pricing
ElevenLabs wins on: Voice realism, cloning quality, API
Listnr vs Play.ht
Listnr wins on: Podcast hosting, text-to-video, pricing
Play.ht wins on: Voice realism, emotion controls
Listnr wins on: Voice count, language coverage, API
Lovo wins on: Video creation, stock media library
Listnr wins on: Voice library, language support, pricing
Podcastle wins on: Podcast editing, remote recording
Listnr wins on: Voice library size, podcast hosting, API
Dupdub wins on: Video dubbing, avatar generation
Listnr wins on: Language coverage, pricing, podcast hosting
WellSaid Labs wins on: Enterprise features, voice consistency
Listnr wins on: Voice library, language count, podcast hosting
Revoicer wins on: One-time pricing, simpler interface
Listnr wins on: Pricing, voice variety, podcast features
ReadSpeaker wins on: Enterprise TTS, accessibility compliance
Listnr wins on: Voice library, API access, podcast hosting
NaturalReader wins on: Reading tool, OCR support, simplicity
Listnr wins on: Voice quality, language count, features
Speechelo wins on: One-time payment model
Listnr vs TTS OpenAI
Listnr wins on: Voice variety, podcast hosting, pricing
TTS OpenAI wins on: Voice realism, developer API quality
Listnr vs Hume
Listnr wins on: Voice library, pricing, content creation tools
Hume wins on: Emotion AI, research capabilities
よくある質問
Is Altered AI free?
Yes, Altered offers a free plan with basic voice editing features. For voice cloning and all speaking styles, you need the Creator plan at $30/month.
How much does Listnr cost?
Listnr starts at $19/month for the Individual plan. This includes 20,000 words, 50 videos, and access to all 1,000+ voices with commercial rights.
What is the most realistic AI voice changer?
Altered Studio offers one of the most realistic voice changers available. Its speech-to-speech morphing preserves natural inflection while changing the voice entirely.
Is there a free AI voice generator?
Both Altered and Listnr offer free plans. Listnr gives about 1,000 words per month for free. Altered lets you test basic voice editing at no cost.
は AI音声クローン illegal?
AI voice cloning is legal when you clone your own voice or have permission. Using it to impersonate someone without consent may violate laws in many regions.
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