Voice AI today understands what you say: the words, the language, the text. But it's deaf to how you actually sound — pitch, timbre, emotion, vocal quality, rhythm, melody. Everything that makes a voice a voice, not just a transcript.

VoxaTrace is an on-device SDK that makes any application acoustically intelligent.

Eight years of R&D. Five million users in production. All running natively on Android and iOS, without a single server call.

┌──────────────────────────────┬──────────────────────────────────┐
│           Sonix              │            Calibra               │
│       (Audio Engine)         │      (Acoustic Analysis)         │
├──────────────────────────────┼──────────────────────────────────┤
│  • Multi-track playback (8)  │  • Pitch detection (YIN/SwiftF0) │
│  • Recording (M4A/MP3)       │  • Voice activity detection      │
│  • Pitch shifting ±12 semi   │  • Singing evaluation & scoring  │
│  • Tempo control 0.5x–2x     │  • Vocal range detection         │
│  • MIDI synthesis (SoundFont)│  • Audio effects chain           │
└──────────────────────────────┴──────────────────────────────────┘

dependencies {
    implementation("com.musicmuni:voxatrace:0.9.2")
}

dependencies: [
    .package(url: "https://github.com/musicmuni/voxatrace", from: "0.9.2")
]

pod 'VoxaTrace', :podspec => 'https://raw.githubusercontent.com/musicmuni/voxatrace/main/VoxaTrace.podspec'

val detector = CalibraPitch.createDetector()
val point = detector.detect(audioSamples, sampleRate = 16000)
println("${point.pitch} Hz @ ${(point.confidence * 100).toInt()}% confidence")
detector.close()

let detector = CalibraPitch.createDetector()
let point = detector.detect(samples: audioSamples, sampleRate: 16000)
print("\(point.pitch) Hz @ \(Int(point.confidence * 100))% confidence")
detector.close()

Output:

440.0 Hz @ 92% confidence

voxatrace.ai

Commercial. See LICENSE.

support@musicmuni.com