Benchmarks & Profiling
Deterministic latency and VRAM allocation statistics
Empirical Dual-Device Hardware Benchmark Suite
The following performance benchmarks were gathered directly on physical test devices running Android 16 under Termux ARM64 environment. Every test was conducted over repeated synthesis iterations with zero silent fallback.
| Device & Hardware Profile | Synthesis Engine | Model Architecture | Audio Duration | Compute Latency | Real-Time Factor | Hardware Utilization |
|---|---|---|---|---|---|---|
| Samsung Galaxy S22 Snapdragon 8 Gen 1 / Adreno 730 |
Bionic Vulkan GPU | MeloTTS Universal Bilingual | 3.12 s | 2.75 s | 0.88x | Bionic Direct Linking / Real-time |
| Samsung Galaxy S21 Exynos 2100 / ARM Mali-G78 |
Bionic Vulkan GPU | Piper VITS (On-chip Tiled) | 3.12 s | 0.56 s | 0.18x | 5.5x Faster Than RT / Zero Fallback |
| Samsung Galaxy S20 Exynos 990 / ARM Mali-G77 |
Bionic Vulkan GPU | Piper VITS (On-chip Tiled) | 3.12 s | 0.75 s | 0.24x | 4.1x Faster Than RT / SRAM Tiled |
| Samsung Galaxy S25 Snapdragon 8 Elite / Adreno 830 |
Bionic Vulkan GPU | Supertonic 3 Flow Matching | 3.12 s | 0.38 s | 0.12x | Ultra-Fast Studio / Flow Matching |
| Samsung Galaxy S25 Snapdragon 8 Elite / Adreno 830 |
Vulkan GPU Neural | lessac-high-fp16 (22.05kHz) | 6.70 s | 6.65 s | 0.993x | GPU Subgroup 64 / Pure Tensor |
| Samsung Galaxy S25 Snapdragon 8 Elite / Adreno 830 |
Vulkan GPU Neural | lessac-medium (22.05kHz) | 4.59 s | 1.21 s | 0.264x | GPU Compute / 3.79x Faster Than RT |
| Samsung Galaxy A35 Exynos 1380 / ARM Mali-G68 MP5 |
Vulkan GPU Neural | lessac-medium (22.05kHz) | 4.52 s | 5.18 s | 1.146x | Mali Subgroup 16 / Medium Kernel |
| Samsung Galaxy A35 Exynos 1380 / ARM Mali-G68 MP5 |
Vulkan GPU Neural | lessac-high-fp16 (22.05kHz) | 6.73 s | 34.33 s | 5.098x | Full VRAM Resident / High Fidelity |
| Heterogeneous ARM64 All Core Profiles |
Parametric DSP Formant | 5-Band Biquad Formant | 4.15 s | 0.054 s | 0.0130x | 0MB External RAM / Instant CPU |