Quick voice prep
Use it like a whistle while making a closed-mouth sound.
Unlock your voice potential
INNVOX SOVT Training WhistleSOVT voice prep.
Semi-occluded vocal tract practice creates gentle back pressure and airflow feedback before demanding voice use.
01Semi-occluded voice training.
Creates gentle back pressure with easy airflow, no water glass or disposable straw needed.
02Adjustable resistance trainer.
Slide the red control to find a lighter or stronger feel, then return to the same setting next time.
03Singers, speakers, teachers, creators.
Built for people who need their voice to be ready on schedule, not only in perfect studio conditions.
Voice science
Semi-occluded vocal tract work is a common voice training method.
SOVT practice sends sound through a narrowed passage, creating gentle back pressure and clearer airflow feedback. INNVOX turns that exercise into a compact adjustable-resistance whistle for quick voice prep before performing, teaching, or recording.
See how INNVOX works
↑Slide up to increase resistance↓Slide down to reduce resistanceRed slider wheel
How it works
Warm up your voice in 3 minutes.
Adjustable resistance
Adjustable resistance makes each practice session easier to repeat.
Clearer airflow feedback
Let the resistance help you find steady airflow.
Who it is for
Built for singers, speakers, teachers, and creators.
- SingersFor voice preparation before singing work.
- SpeakersFor people who rely on spoken voice.
- Teachers & creatorsFor daily voice users with demanding schedules.
Product view
A compact voice training whistle.
The product images show the INNVOX whistle, packaging, and printed guide materials for the vocal training whistle.
Adjustable resistance
Adjustable resistance for focused voice training.
The red slider lets users move between an easier airflow feel and a stronger resistance feel, so the same device can support different moments in the day.
Start with a short, focused voice practice.
INNVOX keeps the product story simple: short voice routines, adjustable resistance, and frequent voice users who need a tool they can actually carry.
FAQ
What to know before you start.
What is INNVOX?
INNVOX is a compact voice training whistle with adjustable resistance. Use it like a whistle while making a closed-mouth sound, letting the device create gentle back pressure. It is built for short voice-prep routines before singing, speaking, teaching, streaming, podcasting, or recording.
Who is it for?
It is designed for people who use their voice often: singers, actors, teachers, coaches, public speakers, livestreamers, podcasters, sales teams, and anyone who wants a repeatable warmup before a voice-heavy day. It is not only for professional singers.
How do I use it for basic practice?
Start with the resistance set low. Keep your shoulders, jaw, tongue, and throat relaxed. Put the mouthpiece gently at your lips and make an “oo” sound, then rest. If the sound feels squeezed, strained, or uncomfortable, reduce resistance and use less effort.
Should I inhale through INNVOX?
No. Use it for controlled exhale-based voice practice. Do not inhale through the device, do not force air, and do not chase a loud sound. The useful feeling is steady airflow and gentle feedback, not pressure or strain.
How is it different from using a regular straw?
A straw can work for basic vocal exercises, but its resistance is fixed by the straw diameter and changes when you switch straws. INNVOX gives you a reusable body and a built-in resistance control, so you can find a setting that feels right and return to it more consistently.
How often should I use it?
Most users only need a few focused minutes before demanding voice work. You can use it before a performance, class, call, rehearsal, recording session, or after a long day of speaking as a gentle reset. Stop if you feel pain, dizziness, unusual pressure, or vocal fatigue.
Is INNVOX a medical device?
No. INNVOX is a vocal training product. It is not intended to diagnose, treat, or cure voice injuries or medical conditions. If you have persistent hoarseness, pain, vocal fold injury, breathing concerns, or a clinical voice condition, consult a qualified clinician.
How do I clean it?
Rinse after use and let it air dry completely before storing. For deeper cleaning, use warm water with mild soap, rinse thoroughly, and dry in a ventilated place. Do not store it while wet, and avoid harsh chemicals or boiling unless future official care instructions specifically allow it.
Can I order for a school, studio, or team?
Yes. Use the add-to-cart page for normal orders. For bulk, wholesale, team, or education purchases, email yaodong@innvox.cn with quantity, destination country, and any deadline so we can confirm the best fulfillment path.