In today’s world, voice is more than just sound—it’s data, insights, and opportunities waiting to be unlocked. When we launched Voice Harbor V3, we aimed to build the most comprehensive voice platform: PHI reduction, diarization, sentiment analysis, SDKs, dashboards—you name it, but in trying to do everything, we realized complexity was getting in the way of impact.

That’s why we built Voice Harbor V4.0 with one guiding principle: “Cut the clutter.” Smarter, faster, and more expressive, V4.0 focuses on what truly matters: delivering clear, private, and natural speech that powers better outcomes—without the noise.

In Voice Harbor V3, we built an ambitious tool offering a wide range of services: PHI reduction, diarization, sentiment analysis, SDKs, dashboards, and more. It was powerful, but also sprawling. We realized that too many features can get in the way of delivering the outcomes that matter most: clear, private, natural speech.

This insight became the guiding principle for Voice Harbor V4.0: “Cut the clutter.”

Leaner, Sharper, Stronger

With Voice Harbor V4.0, we took a step back. We streamlined services, refactored the backend and frontend, and focused on one core promise: the strongest biometric anonymization we’ve ever delivered.

V4 isn’t about “more features.” It’s about better outcomes:

• Higher-quality anonymization: 44–48 kHz pool quality, multilingual support (EN, FR, IT, ES, DE).
  
  
• More natural and expressive voices: controllable emotions, preserved age/gender characteristics.
  
  
• Faster and smarter processing: improved chunking, lower system complexity.
  
  

We cut back — but what remains is sharper, stronger, and truer to our mission: anonymized speech that preserves meaning, naturalness, and privacy.

Quality vs. Privacy

When it comes to naturalness, Voice Harbor V4 matches the best. On the LibriSpeech benchmark, our Advanced V4 model achieved a MOS of 4.15, slightly surpassing ElevenLabs at 3.93 — proving that anonymized voices can sound just as natural, if not better.

But quality is only half the story. Using ECAPA-TDNN to measure speaker similarity:
(A lower number means your anonymized voice is much harder to link back to you — boosting privacy without compromising naturalness)

• ElevenLabs outputs remain highly linkable to the original speaker (0.173)
  
  
• Advanced V4 reduces that similarity to just 0.021
  
  

Result: A natural, human-like voice experience with far stronger privacy guarantees.

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Consistently Natural Across Languages

Voice Harbor V4 shines beyond English. This ensures that no matter the language, your anonymized speech remains natural — perfect for international deployments. The Advanced V4 model achieved MOS scores above 4.0 in:

• English: 4.05
  
  
• German: 4.04
  
  
• French: 4.01
  
  
• Spanish: 4.00
  
  

This demonstrates that V4 preserves natural prosody and expressiveness across languages, making it ideal for global deployments — from healthcare to contact centers and research applications.

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Performance Gains

V4 is up to 3× faster than V3, enabling real-time anonymization even at scale, reducing latency and costs. We also prioritized speed. Anonymization at scale demands real-time performance. In V3:

• Processing 51 seconds of audio took 75 seconds (RTF ≈ 1.5×)
  
  

With V4:

• Mini: RTF < 0.5× (up to 3× faster than V3)
  
  
• Advanced: RTF ≈ 0.85×
  
  

This translates to efficient deployments, reduced latency, and better cost efficiency for high-volume workloads.

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Why This Matters

Voice Harbor V4.0 delivers anonymized speech that is clearer, faster, more natural, and more expressive — without compromising privacy.

Whether you’re:

• Protecting sensitive healthcare conversations
  
  
• Powering compliance-ready contact centers
  
  
• Enabling research with anonymized audio
  
  

V4.0 gives you stronger guarantees and a superior user experience.

Take Your Voice Privacy to the Next Level

With Voice Harbor V4.0, anonymized speech is no longer a compromise — it’s natural, expressive, fast, and secure. Protect sensitive conversations, ensure compliance, and deliver a human-like experience all at once.

Ready to hear the difference? Transform your audio workflows today with Voice Harbor V4.0 and experience the next generation of privacy-first speech technology.

[Try Voice Harbor V4.0 Now]

Ready to hear the difference?
Click below to try Voice Harbor V4.0 and transform your audio workflows today.”

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