Is Talk Slower LSVT-LOUD certified?

No. Only programs delivered by therapists certified by the LSVT Institute may claim the LSVT-LOUD label. Talk Slower is a complementary tool compatible with LSVT principles (intensity biofeedback relative to baseline) and not an alternative to the formal protocol.

At what stage of the disease is the tool indicated?

From the first signs of dysarthria. Studies show that brain plasticity is greater in the early phase. At-home biofeedback is also useful in the advanced phase to maintain gains.

Is the intonation module suitable for patients with Parkinson's disease?

Yes. When the patient accesses the module via the link provided by their speech-language pathologist, they receive a Parkinson's-specific introduction and an explanation of why their voice lacks variation. The exercises target 11 prosodic intentions with real-time visual feedback on the F0 curve.

Do my patients need to pay?

No. Your patients access the app for free with your Pro Code. Only the speech-language pathologist subscription is paid (starting at $16.90/month, with no patient limit).

Parkinson's disease and voice rehabilitation

LSVT-LOUD compatible biofeedback plus intonation training for your patients with Parkinson's disease.

Create my SLP access

+6 dB

average vocal gain with LSVT LOUD (Ramig et al., 2001)

6 tasks

in the built-in Parkinson's assessment, about 35 minutes

Videos

Videos to share with your patients

Short, captioned explainers to send to a patient or their family after a session.

The Parkinson's voice: hypophonia, monopitch, dysarthria

Parkinson's disease leads to hypokinetic dysarthria: a voice that is too soft (hypophonia), too monotone (loss of F0 variation), with reduced articulation and sometimes a festinating rate. Patients cannot perceive on their own that their voice has become inaudible. That is the heart of the therapeutic challenge.

ICD-10: G20

Hypophonia: soft voice, constant effort to be heard

Monotone voice: loss of melodic variation (flat F0)

Festinating rate: uncontrolled acceleration mid-utterance

Reduced articulation: imprecise consonants, low amplitude

Monitoring deficit: the patient believes they are speaking normally

What Talk Slower brings to this indication

Intonation module (F0): Parkinson's prosody

Real-time visualization of the melodic contour via NSDF autocorrelation. 11 prosodic and emotional intentions. Voice coaching segment by segment. Ideal for countering monotone speech, a symptom that is often under-treated.

Neuro articulation exercises

PA-TA-KA, oral-facial praxis, tongue twisters. Optional combined articulation plus intensity work for patients who are both dysarthric and hypophonic. 20 dedicated exercises.

Assessment and longitudinal tracking

Intensity progress curve over several weeks, session history, replayable recordings. See the gains between two appointments.

Try it live

These modules run right in your browser, microphone optional. This is what your patients see between sessions.

Vocal projection biofeedback: LSVT-LOUD principle

Read this sentence aloud:

“Hello, my name is Marie and I've lived in Lyon for twenty years.”

Keep your level in the green zone for 10 seconds.

How it fits into your practice

1. Calibration

The patient reads a neutral sentence for 5 seconds. The app measures their resting conversational voice.

2. Projection exercise

They read a text following the gauge. The green zone = LSVT goal reached.

3. Intonation

They practice melodic contours across 11 intentions. Their F0 curve displays in real time.

4. Assessment

Session result: % of time in the projection zone, average intensity, progress curve over time.

5. Follow-up

You review the history from your dashboard. You adjust the goals at each session.

Clinical assessmentsBeta · orientation aid

Parkinsonian speech, measured task by task

The patient speaks, the analysis engine pre-fills the measures, you keep control of every value - and the Word report is ready at the end.

Parkinson's assessment

Voice & speech · MPT, GRBAS, diadochokinesis

6 tasks · ~35 min

Maximum phonation time and diadochokinesis (tempo, regularity) measured on audio
GRBAS and voice-impact questionnaire built in, with norms displayed alongside
Orientation towards vocal projection and intonation exercises

The patient speaks, the analysis engine pre-fills measures and scores

You replay every task and adjust every value

Pre-written Word report, ready to personalize

Automatic comparison with the previous assessment (T0 → T1)

Try it for free

Clinical orientation aids, to be validated in consultation. The app does not establish any diagnosis.

Clinical references

LSVT-LOUD produces an average gain of +6 dB, maintained at 6 and 12 months with daily practice.

Ramig et al. (2001), Movement Disorders

Meta-analysis of behavioral speech treatments in PD: intensive approaches targeting vocal intensity (LSVT-type) yield the strongest evidence.

Atkinson-Clement, Sadat, Pinto (2015), Neurodegenerative Disease Management

Parkinsonian dysarthria has three components, dysphonia, dysprosody (F0 monotony) and dysarthria, which progress gradually over the course of the disease.

Pinto, Ghio, Teston, Viallet (2010), Revue Neurologique

Early speech therapy intervention is decisive. Too many patients are referred late, even though speech therapy is effective from the first vocal signs.

Gentil, Esnault, Danaila, Broussolle (2016), Pratique Neurologique

Comparison of available tools

What the main tools offer for this indication, according to their official websites.

Tool	Voice biofeedback	SPS measurement (rate)	Browser-based	No installation	Remote tracking	Free for patients
Talk Slower
LSVT Coach
Voice Analyst
SPEAK OUT!

= partial or limited feature. Sources: official tool websites, May 2026.

Extend the impact of your sessions between appointments

Your patients practice at home with the same biofeedback as in session. You see their progress before they even walk in.

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Ready to use from the very first sessionYour patients join your follow-up with your code, at no cost to themHuman support within 24 hours

Frequently asked questions

Related conditions

These indications share a mechanism or a close differential diagnosis. Explore the dedicated tools.

Dysarthria: speech exercises and SLP follow-up

Vocal projection, articulatory range, and at-home tracking for your patients with dysarthria.

See details

Palilalia: exercises and speech-therapy tracking

Rate control, vocal projection, and self-monitoring to support neurogenic palilalia at home, alongside your clinical work.

See details