# Speech Evaluator — Full Content Reference > AI-powered speech evaluation tool with real audio analysis based on Toastmasters standards. Speech Evaluator is a web-based tool that provides instant, professional speech evaluation. It records audio directly in the browser, transcribes with Whisper, performs real audio signal analysis (pitch, volume, pauses, speaking rate), and delivers a structured 5-dimension Toastmasters-style evaluation powered by GPT-4o-mini. --- ## Site Overview - **URL**: https://speechevaluator.com - **Deployment**: Vercel (serverless) - **Tech Stack**: Next.js 15, React 19, TypeScript, Tailwind CSS --- ## Core Tool ### Speech Evaluation Tool - **URL**: https://speechevaluator.com/app - **Description**: Record or upload a speech (up to 10 minutes). The tool transcribes it with Whisper, analyzes audio features, and provides a comprehensive evaluation based on Toastmasters standards. - **Inputs**: Audio recording (browser microphone) or audio file upload (MP3, WAV, M4A, WebM, up to 25MB) - **Outputs**: - Overall score (1.0-5.0) - 5 dimension scores (Clarity, Vocal Variety, Comfort Level, Content Structure, Language Use) - Per-dimension metrics, assessment, and improvement suggestion - General comments: strengths, areas to practice, next steps - Speaking metrics: WPM, word count, filler word count/percentage, vocabulary richness - Audio analysis: pause count/duration, speaking rate variation, pitch range, volume dynamics - Full speech transcript - Downloadable PDF report ### How It Differs from ChatGPT/Claude Speech Evaluator performs **real audio signal processing**, not just transcript analysis: - **Pitch tracking**: Extracts fundamental frequency (F0) via autocorrelation on audio frames - **Volume dynamics**: Computes RMS energy per 100ms frame - **Precise pause detection**: Identifies gaps >0.3s between words using Whisper word-level timestamps - **Speaking rate variation**: Sliding window WPM calculation with standard deviation ChatGPT and Claude can analyze a text transcript, but cannot provide quantitative audio measurements, visual charts of speaking patterns, or consistent structured scoring across evaluations. --- ## Evaluation Dimensions ### 1. Clarity (Score 1-5) - **Measures**: Speaking pace, pronunciation, articulation - **Key metric**: Words per minute (ideal range: 130-170 WPM) - **Audio data**: Speaking rate over time chart ### 2. Vocal Variety (Score 1-5) - **Measures**: Tone changes, pace variation, use of pauses - **Key metric**: Pitch variation (Hz standard deviation) - **Audio data**: Pitch contour chart, volume dynamics chart ### 3. Comfort Level (Score 1-5) - **Measures**: Fluency, filler words, confidence indicators - **Key metric**: Filler word percentage - **Audio data**: Pause distribution timeline ### 4. Content Structure (Score 1-5) - **Measures**: Opening, body, conclusion organization - **Key metric**: Speech duration and segment pacing ### 5. Language Use (Score 1-5) - **Measures**: Vocabulary richness, sentence variety - **Key metric**: Vocabulary richness ratio (unique words / total words) --- ## Pricing - **First evaluation**: FREE (no credit card required) - **Subsequent evaluations**: $4.99 per analysis - **No subscription**: Pay only when you need it - **Comparison**: Traditional speaking coach costs $150-300 per session --- ## Sample Evaluation - **URL**: https://speechevaluator.com/sample - **Description**: View a complete sample evaluation of a personal story speech. Includes all 5 dimension scores, feedback, metrics, and transcript. Demonstrates exactly what users receive after analysis. --- ## Blog Content ### How to Evaluate a Speech - **URL**: https://speechevaluator.com/blog/how-to-evaluate-a-speech - **Topic**: Step-by-step guide to evaluating speeches, covering content, delivery, and language criteria ### Speech Evaluation Form Template - **URL**: https://speechevaluator.com/blog/speech-evaluation-form-template - **Topic**: Downloadable Toastmasters evaluation form templates and how to fill them out ### 50+ Speech Evaluation Comments Examples - **URL**: https://speechevaluator.com/blog/speech-evaluation-comments-examples - **Topic**: Ready-to-use evaluation comments organized by dimension and skill level ### Self Speech Evaluation Guide - **URL**: https://speechevaluator.com/blog/self-speech-evaluation-guide - **Topic**: How to evaluate your own speeches for continuous improvement ### Speech Evaluation Rubric and Scoring - **URL**: https://speechevaluator.com/blog/speech-evaluation-rubric-scoring - **Topic**: Understanding scoring rubrics used in speech evaluation contexts ### Online Speech Evaluation Tools - **URL**: https://speechevaluator.com/blog/online-speech-evaluation-tools - **Topic**: Comparison of available online tools for speech evaluation ### Speech Evaluation for Students - **URL**: https://speechevaluator.com/blog/speech-evaluation-for-students - **Topic**: How students can use speech evaluation to improve presentation skills --- ## FAQ **How much does it cost?** First evaluation is free. After that, $4.99 per analysis. No subscriptions or hidden fees. **How long does analysis take?** Approximately 60 seconds for a complete evaluation with audio analysis. **What makes this different from other tools?** Real audio signal processing (pitch, volume, pauses), Toastmasters evaluation standards, 30x cheaper than traditional coaching, consistent structured scoring. **Is my recording stored?** No. Audio is used only for analysis and never stored permanently, shared, or used to train AI models. **Do I need to download an app?** No. Works directly in your web browser on any device. --- ## Contact - Email: charliewang0322@gmail.com - Website: https://speechevaluator.com