Denspeak - Speech-To-Text Optimized for Dentistry

The Dental STT for Software, DSOs and Dental Schools

Denspeak's speech recognition engine is specifically optimized for the unique acoustic conditions found in dental clinics. To achieve stable and accurate performance in this high-noise environment, the system integrates three key elements

Speech Enhancement (SE)
Technology for reconstructing clean speech from noisy input

Denspeak removes environmental noise, reverberation, and background interference to improve speech quality and intelligibility, enabling high-accuracy speech recognition results.

Noise-Robust Training
Incorporating dental machine noise and real clinical ambient noise into the model

By employing a Phase-Aware Decoding Architecture, the model enhances noise robustness while preserving signal fidelity.

Active Detection (VAD)
AI-based detection of speech segments

Denspeak's fine-tuned VAD module accurately identifies and suppresses noise specific to dental environments, effectively treating it as silence and thereby preventing misrecognition.

Makes us different

Denspeak AI API - Building Blocks for Voice Intelligence

Denspeak's AI APIs let you instantly add voice intelligence to your systems-enabling automation, faster workflows, and better user experiences. From transcription to translation, each API is designed for low latency, high accuracy, and seamless integration. AIzac provides APIs for speech-to-text, voice commands, summarization, and real-time translation-customizable tools to embed voice intelligence into your workflow with minimal effort.

Denspeak Voice AI Engine - Precision Voice AI Built for Dentistry

Denspeak's Voice AI Engine uses groundbreaking technology that combines specialized AI voice recognition for dentistry with advanced solutions. Our AI platform, trained with dental expertise and voice data allows clinicians precise and efficient charting and data management during patient visits, all without the need for additional assistance.

Performance

Industry-leading technology that reconstructs clean speech from noisy input

Denspeak fast Denspeak accuracy Denspeak diarization Denspeak multilingual

Speech Technology

Industry-leading technology that reconstructs clean speech from noisy input

Densper speech

Densper incorporates a speech recognition engine specifically optimized for the unique acoustic conditions of dental clinics. To achieve stable, accurate performance in this high-noise environment, the system integrates several coordinated stages.

Speech Enhancement (SE) - reconstructing clean speech from noisy input


Densper speech
  • Removes environmental noise, reverberation, and background interference to improve speech quality and intelligibility, enabling high-accuracy recognition.
  • The SE model can be fine-tuned, allowing optimization for specific acoustic environments.
  • A dual-decoder architecture (magnitude and phase) enables high-fidelity speech reconstruction.
  • The service architecture matches the performance of transformer-based models while reducing computational load by approximately 70% (2.26 GFLOPs → 0.76 GFLOPs).

Noise-Robust Training - modeling dental machine and ambient noise

Densper speech
  • A Phase-Aware Decoding architecture enhances noise robustness while preserving signal fidelity.
  • Complex Linear Layer training learns both magnitude and phase components simultaneously, preserving the full spectral representation compared with magnitude-only approaches.
  • Strengthened temporal coherence enables accurate reconstruction of the attack/decay envelope and improves onset detection accuracy by approximately 5–10%.

Voice Activity Detection (VAD) - AI-based detection of speech segments

Densper speech

Conventional VAD tends to misinterpret dental-clinic noise as valid speech, causing recognition errors in real clinical settings. Densper's fine-tuned VAD accurately identifies and suppresses noise specific to dental environments, effectively treating it as silence and preventing misrecognition.

  • Removes unnecessary silent segments, improving recognition accuracy and resource efficiency.
  • Trained on noise patterns commonly observed in clinical environments for robust detection.
  • Supports fine-tuning of the VAD module for environment-specific optimization.

Efficiency & Cost

Controllable Intelligence at a Rational Cost

AIaaS cost efficiency: Because AIzac operates its own infrastructure models, there are no external API usage fees passed on to clients. This creates a sustainable, cost-efficient pricing structure-one of the key enablers of AIzac's long-term market leadership.

As a result, AIzac delivers the ideal balance between speed and performance, ensuring smooth, real-time operation for both translation and clinical charting use cases.

Training & Methodology

AIzac's proprietary STT and LLM were trained on more than 80,000 hours of English speech data.

General data was collected from video and podcasts (~70%), audiobooks (~25%), and additional English audio datasets (~5%, including government-supported initiatives such as AI Hub), along with recorded seminars.

The dental dataset comprises original clinical recordings spanning nine specialty departments.

Additionally, portions of the dental dataset were developed using real-world clinical audio provided by U.S. DSO partners (referenced as C*, A*, W*, and H*), anonymized and used under appropriate data-use agreements.

These contributed to significantly improved domain accuracy, procedure-specific terminology recognition, and real-time charting performance.

FAQ

What makes Denspeak faster, more accurate and more cost effective?
It's simple. Denspeak was optimized for dentistry's unique sound challenges. Denspeak outperforms STTs (like Deepgram and Azure) since it's trained in dentistry.
Is Denspeak SOC-2 and HIPAA-compliant?
Yes. Denspeak is HIPAA certified and SOC-2 is moving toward finalization, ensuring our technology is ready for deployment in compliant environments.
How does Denspeak compare on cost to frontier STTs like Azure and Deepgram?
Similar to frontier STTs, we charge based on token usage and on average, Denspeak is 20-40% cheaper.
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