Fluent Speech Starts with Forbrain for Stuttering
No one should feel silenced by their own voice. Forbrain® isn’t just a tool. It’s a chance to be heard – clearly, confidently, and without hesitation.
The Stuttering Challenge
Stuttering is a speech difficulty—but it becomes a social handicap in a world that struggles to adapt to differences. People who stutter are often patient, resilient, and incredibly sharp. Yet the way they are perceived can deeply affect their self-esteem.
Overcoming stuttering isn’t easy. It takes time—sometimes years—and for some, fluency can feel out of reach. But when the right technology meets sustained personal effort, meaningful and lasting change becomes possible.
Introducing Forbrain for Stuttering: Real-Time Fluency, Long-Term Progress
Forbrain for Stuttering is designed to provide immediate improvement in speech fluency while also supporting long-term transformation through voice and brain training.
It combines the proven instant benefits of Delayed Auditory Feedback (DAF) with cognitive voice workouts to build sustainable progress over time.
When people who stutter hear their voice with a slight delay, it can significantly reduce—or even instantly eliminate—stuttering.
DAF has been studied for decades and has shown benefits for up to 80% of individuals who stutter. This effect is achieved by introducing a brief delay in how one hears their own voice, encouraging smoother, more controlled speech.
However, traditional DAF systems—like mobile apps or bulky headsets or hearing aids—often rely on ear-covering headphones, making them impractical for real-life, everyday conversations.
They also tend to lose effectiveness over time, as the brain adapts and the initial benefits fade.
A Smarter Solution That Goes Further
Forbrain for Stuttering overcomes these limitations. It uses bone conduction technology to deliver DAF while leaving the ears open, allowing for natural interaction with the world. At the same time, it features Forbrain’s patented dynamic filter, which processes the voice in real time and delivers a unique auditory workout to the brain.
This dual-action design means that Forbrain doesn’t just help you speak more fluently—it helps your brain learn to support fluent speech over time.
Whether you’re having a conversation, giving a speech, preparing for an interview, or reading aloud, it fits naturally into your routine without interruption.
And while it includes the powerful benefits of Delayed Auditory Feedback (DAF), Forbrain for Stuttering is much more than a DAF device. It is an audio-vocal training tool designed to help users better integrate the rhythm and flow of their speech over time, supporting lasting fluency beyond the moment.
With a price point that’s 10 times lower than traditional DAF systems, it offers an accessible, practical, and affordable solution that complements any speech or voice training program.
Immediate Effect
Combining Forbrain’s technology with Delayed Auditory Feedback (DAF) could result in a robust and highly effective tool for supporting people who stutter, improving speech fluency, and keeping the user’s ears free.
Long-term Effect
The new Forbrain Stuttering model offers consistent and impactful results for individuals seeking both short-term fluency gains and long-term speech clarity and rhythm improvement.
Why Forbrain For Stuttering?
When we created Forbrain, our dream was simple yet profound: to help people reconnect with their own voices. We believed in the power of auditory feedback — how hearing oneself clearly could unlock confidence, focus, and expression. Over the years, we watched as children, students, professionals, and therapists embraced the device, each one reclaiming their ability to learn, speak, and thrive.
But among our users, one group consistently touched our hearts in a deeper way: people who stutter.
We heard their stories. A young entrepreneur struggling to pitch his ideas. A teacher avoiding the front of the classroom. A teenager choosing silence over shame. Each voice — brilliant, expressive, and full of potential — was held back not by ability, but by a disconnect between thought and speech.
That’s when we asked ourselves: What if we could do more?
Today, we’re embarking on a new mission: to develop a specialized version of Forbrain designed specifically for those who stutter. We already knew that the traditional version of Forbrain had potential, as one study demonstrated a significant improvement in fluency for an individual who stutters. This led us to believe that combining Forbrain’s technology with Delayed Auditory Feedback (DAF) could result in a robust and highly effective tool for supporting people who stutter.
Because no one should feel silenced by their own voice.
This is just the beginning. At Forbrain, we believe every voice matters — especially the ones still learning to speak freely.
– Grégoire TOMATIS, Sound For Life’s Co-founder & Managing Director
How DAF Works – and How Forbrain Enhances It
- Delayed Auditory Feedback (DAF) works by subtly altering how your brain hears your own voice. This slight delay can “reset” the rhythm of speech, helping reduce stuttering behaviors like blocks, repetitions, and prolongations.
- The science behind this is known as the choral effect—a phenomenon where people who stutter often speak more fluently when talking in unison with someone else. With DAF, it’s as if you’re speaking with another person—but that voice is your own, heard just milliseconds later.
- Forbrain takes DAF to the next level. By combining a customizable delay with bone conduction and a patented dynamic voice filter, it delivers powerful auditory feedback—without blocking your ears. This makes Forbrain ideal for natural, all-day use in real conversations, public speaking, or therapeutic settings—supporting fluent speech in the moments that matter most.
⬆️Click on the image to see it in full size⬆️
What the Research Says
📘 1/ Kalinowski et al. (1996)
Title: Stuttering amelioration at various auditory feedback delays and speech rates
Summary: Demonstrated that specific DAF delay intervals (e.g., 50–75 ms) produce immediate and significant fluency improvements in people who stutter.
PubMed: PMID: 8735444
📘 2/ Stuart et al. (2004)
Title: Investigations of the impact of altered auditory feedback in-the-ear devices on the speech of people who stutter: initial fitting and 4-month follow-up
Summary: Found that in-the-ear DAF devices significantly reduced stuttering during both initial fitting and over a four-month period, indicating sustained benefit.
PubMed: PMID: 15371036
📘 3/ Foundas et al. (2013)
Title: Speech fluency and altered auditory feedback in children who do and do not stutter
Summary: Showed that DAF significantly improved speech fluency in children who stutter, highlighting its usefulness even in pediatric cases.
PubMed: PMID: 23413264
📘 4/ Armson & Stuart (1998)
Title: Effect of extended exposure to frequency-altered feedback on stuttering during reading and monologue
Summary: Confirmed that prolonged use of altered auditory feedback—including DAF—leads to a marked reduction in stuttering, especially in structured speech tasks.
PubMed: PMID: 23413264
Scientific Evidence Supporting Forbrain® in Stuttering and Voice Quality
The traditional Forbrain® device has demonstrated measurable benefits for individuals who stutter, particularly in enhancing voice quality, speech fluency, and auditory-motor integration. Several peer-reviewed studies support its potential as both a therapeutic and assistive tool:
📘 1/ Escera, C., Gorina-Careta, N., & López-Caballero, F. (2018)
Title: The potential use of Forbrain® in stuttering: A single-case study
Summary: This study investigated the effects of the Forbrain® device, which utilizes altered auditory feedback (AAF), on an adult with persistent developmental stuttering. Over six consecutive days, the participant engaged in reading tasks across three phases: Baseline (device off), Test (device on), and Post-test (device off). Six quantitative voice quality measures were analyzed. Results indicated significant transient improvements in voice quality during the Test phase, suggesting that Forbrain® may effectively modify speech patterns in individuals who stutter.
📘 2/ Escera, C., López-Caballero, F., & Gorina-Careta, N. (2018)
Title: The Potential Effect of Forbrain as an Altered Auditory Feedback Device
Summary: This study assessed the impact of Forbrain®’s altered auditory feedback on voice quality in healthy adults. Participants performed reading tasks under different conditions, and their voice recordings were analyzed for acoustic parameters. The findings indicated that Forbrain® use led to measurable changes in voice quality, supporting its potential application in speech and language rehabilitation.
📘 3/ Nudelman, C. J., Udd, D., Lyberg Åhlander, V., & Bottalico, P. (2023)
Title: Reducing Vocal Fatigue With Bone Conduction Devices: Comparing Forbrain and Sidetone Amplification
Summary: This study compared the effects of two bone conduction devices providing altered auditory feedback on vocal fatigue. Twenty participants completed a vocal loading task using a standard Forbrain® device, a modified device providing only sidetone amplification, and a control condition with no device. Participants rated their vocal fatigue, and voice samples were analyzed for acoustic parameters. The results showed that using bone conduction-altered auditory feedback devices, including Forbrain®, resulted in lower vocal fatigue and significant variations in acoustic voice parameters compared to the no-feedback condition.
Speech & Language Therapists experience better outcomes using Forbrain
“I gave a mum a Forbrain to try in the absence of any other options. Her son did not stutter when using the Forbrain. It was so good she bought one straight away.”
– Sue Simpson – Speech and Language Therapist
As featured in…
Forbrain is trusted by over 7,000 professionals to enhance Speech Therapy outcomes
Forbrain is a safe, non-invasive device backed by years of scientific research, and designed to support therapeutic efforts. Thousands of professionals have reported improved treatment outcomes by using Forbrain during Speech Therapy. By helping children and adults hear their voice better during exercises, Forbrain makes it easier to correct mistakes, so they can reach their full potential. Best of all, it can also be used at home to bridge therapy sessions.
While Forbrain for Stuttering is not a cure for stuttering, it represents one of the most effective tools available for achieving fluency. The traditional Forbrain device has already demonstrated substantial benefits in enhancing speech clarity, rhythm, and vocal control. With the integration of an adjustable auditory delay, the new Forbrain Stuttering model offers an even more robust, adaptable solution—promising consistent and impactful results for individuals seeking both short-term fluency gains and long-term speech improvement.
👉 “Use it during team meetings, phone calls, or just reading out loud at home.”
👉 “Discreet enough to wear while commuting or working.”
Forbrain for Stuttering up close
Dynamic Filter & DAFOffers adjustable auditory feedback and voice filtering to support fluent speech
Bone Conduction TransducersLeave the ears free, enabling natural hearing and effortless conversation
MicrophoneCaptures your voice clearly, minimizing environmental noise
Headphone jackUsed to listen to audio recordings of training or online classes
Additional microphoneFor training support by the parent, teacher, or therapist
Dynamic Filter & DAFOffers adjustable auditory feedback and voice filtering to support fluent speech
Bone Conduction TransducersLeave the ears free, enabling natural hearing and effortless conversation
MicrophoneCaptures your voice clearly, minimizing environmental noise
Headphone jackUsed to listen to audio recordings of training or online classes
Additional microphoneFor training support by the parent, teacher, or therapist
Not Sure if FORBRAIN FOR STUTTERING is for You?
Most people who stutter experience significant benefits from Delayed Auditory Feedback (DAF).
If you’re curious about how it works, you can download a DAF app today and try it for yourself—many are free or low-cost.
This simple step lets you evaluate the impact firsthand before committing.
If it helps, imagine what a dedicated, high-quality device like Forbrain for Stuttering could do for you.
Forbrain for Stuttering is a specially designed version of the Forbrain headset, created to assist individuals who stutter. It uses adjustable auditory feedback to improve speech fluency and increase self-awareness during speaking.
The device integrates Delayed Auditory Feedback (DAF) and a Dynamic Filter to alter how users hear their voice in real time. This auditory shift can help reduce disfluencies, promote smoother speech patterns, and support better rhythm and timing.
While both models share the same core bone conduction and filtering technology, Forbrain for Stuttering includes the ability to adjust auditory feedback delay from 50 ms to 200 ms, providing a tailored experience specifically for fluency training.
The device is suitable for children, teenagers, and adults who stutter. It can be used on its own, under the guidance of a speech-language pathologist or voice coach, or as part of a broader speech therapy program.
Wear the headset so that the bone conduction transducers rest in front of your ears. Speak naturally into the built-in microphone—the feedback and voice filtering will adjust automatically. Sessions typically last 10 to 20 minutes per day, depending on personal needs or professional guidance.
Absolutely. Thanks to its open-ear design, you can hear your surroundings and engage in natural conversation. This makes it ideal for use during speech therapy, interactive exercises, or everyday speaking situations like reading aloud.
Forbrain for Stuttering is a standalone device and does not require a smartphone or app to function. However, it can be used alongside external tools—such as recording apps or digital therapy platforms—if recommended by a therapist.
No specialized training is needed. The device is intuitive and easy to use, and comes with straightforward instructions. That said, working with a speech therapist may enhance the benefits.
Yes. Both Delayed Auditory Feedback (DAF) and altered auditory feedback techniques have been extensively studied and validated in the field of speech-language therapy. Forbrain brings these methods into a convenient, wearable format for daily practice.
According to research, 70–80% of people who stutter experience immediate improvements when using DAF. Forbrain has also demonstrated long-term benefits in voice quality, speech fluency, and communication confidence when used consistently.
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