Implement Speaker Diarization for Multi-Speaker Detection

Priority

MEDIUM

Context

Speaker Diarization identifies and separates different speakers in audio. The iOS SDK has speaker diarization support. The Kotlin SDK is missing this feature.

Current State

• Status: Feature does not exist
• Impact: Cannot distinguish between multiple speakers
• iOS Has: Speaker diarization in STT pipeline

iOS Reference Implementation

• Service: sdk/runanywhere-swift/Sources/RunAnywhere/Components/STT/SpeakerDiarization.swift

Implementation Plan

1. Define Common Interfaces (commonMain)

// commonMain/kotlin/com/runanywhere/sdk/components/stt/diarization/SpeakerDiarization.kt
interface SpeakerDiarization {
    suspend fun diarize(audioData: ByteArray): DiarizationResult
}

data class DiarizationResult(
    val segments: List<SpeakerSegment>
)

data class SpeakerSegment(
    val speakerId: String,
    val startTime: Long,
    val endTime: Long,
    val confidence: Float
)

Files to Create/Modify

New Files (commonMain)

• [ ] components/stt/diarization/SpeakerDiarization.kt
• [ ] components/stt/diarization/models/DiarizationResult.kt

Success Criteria

• [ ] Can identify different speakers
• [ ] Accurate speaker segmentation
• [ ] Integrated into STT pipeline

Estimated Effort

1-2 weeks

🤖 Generated with Claude Code