Expressive Voice SSML & Acoustic Synthesis Lab

Word-Level Expressiveness Script

Presets:

Acoustic Parameter Tuning

Whisper Noise Shift 65%

Laugh Pulse (Hz) 6.5 Hz

Sigh Decay Time 1.8s

Formant Pitch Contour 1.00x

Voice Clone Sample Duration Simulation 5s (Quick Clone)

Real-Time Acoustic Oscilloscope & Spectrograph

FORMANTS: F1=500Hz F2=1500Hz 44.1 kHz / 16-bit PCM

0.00 / 0.00s

COMPUTED SYNTHESIS CAPABILITY PROOF

Processed Script Characters: 112

Detected Expressive Tags: whisper, laugh, sigh

Estimated S2.1 Latency: 90ms

S2.1 Cost Savings vs ElevenLabs: 83.3%

Voice AI Benchmarks & Inference Cost Analysis

Monthly Volume: 1.0M Chars

Fish S2.1 Pro

First-Chunk Latency 90 ms

Cost per 1k Chars $0.005

Simulated Monthly Cost $5.00

Voice Cloning Requirement 5 Sec Audio

Word-Level Tag Support Native Full Range

ElevenLabs Turbo v2.5

First-Chunk Latency 320 ms

Cost per 1k Chars $0.030

Simulated Monthly Cost $30.00

Voice Cloning Requirement 60 Sec Audio

Word-Level Tag Support SSML Partial

Cartesia Sonic

First-Chunk Latency 180 ms

Cost per 1k Chars $0.005

Simulated Monthly Cost $5.00

Voice Cloning Requirement 10 Sec Audio

Word-Level Tag Support Moderate Cues