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Dialect Collection Tool MVP Requirements Document

1. Product Overview

1.1 Core Features

A simple dialect collection tool supporting both real-time recording and audio upload, with text-based timeline annotation.

1.2 Use Cases

  • Recording dialect based on script
  • Uploading existing dialect recordings
  • Free conversation recording
  • Audio-text alignment annotation

2. Functional Requirements

2.1 Recording Features

2.1.1 Real-time Recording Mode

  • Recording controls (Start/Pause/Stop)
  • Real-time volume visualization
  • Recording duration display
  • Playback function
  • Re-recording option

2.1.2 Audio Upload Mode

  • Drag-and-drop upload
  • File selection upload
  • Supported formats: MP3/WAV
  • File size limit: 50MB

2.2 Audio Processing

  • Basic audio trimming
  • Waveform display
  • Audio timeline annotation

2.3 Text Alignment

  • Text input/paste
  • Speech segment and text alignment
  • Timestamp marking

3. Interface Design

3.1 Main Interface

  • Two main entry points: Live Recording/Upload Audio
  • Recent recordings list (local storage)

3.2 Recording Interface

3.2.1 Live Recording

![Recording Interface Mockup]

Layout:

  • Top: Recording Control Area

    • Recording button (Start/Pause/Stop)
    • Recording duration
    • Volume indicator

  • Middle: Text Display Area (Optional)

    • Script display
    • Font size adjustment

  • Bottom: Audio Visualization Area

    • Waveform display
    • Timeline

3.2.2 Audio Upload Interface

Layout:

  • Drag-and-drop zone
  • File selection button
  • Upload progress indicator
  • Format/size guidelines

3.3 Audio Editing Interface

Layout:

  • Audio Waveform Area

    • Waveform visualization
    • Draggable timeline
    • Playback controls

  • Text Alignment Area

    • Text input field
    • Timestamp marking buttons
    • Alignment preview

4. Interaction Flow

4.1 Live Recording Flow

  1. Select "Live Recording"
  2. (Optional) Input/paste script
  3. Click record button to start
  4. Display waveform and duration during recording
  5. Auto-play preview after stopping
  6. Confirm save or re-record

4.2 Audio Upload Flow

  1. Select "Upload Audio"
  2. Drag-and-drop or select audio file
  3. Auto-enter editing interface after upload
  4. Input/paste corresponding text
  5. Perform audio-text alignment annotation

4.3 Audio Annotation Flow

  1. Play audio
  2. Click mark button at key points
  3. Auto-generate timestamps
  4. Adjust text correspondence
  5. Preview confirmation
  6. Export annotation results

5. Technical Requirements

5.1 Audio Processing

  • Sample rate: 16kHz/48kHz
  • Format: WAV/MP3
  • Mono channel

5.2 Storage Solution

  • Browser IndexedDB for audio files
  • LocalStorage for configuration
  • Support for audio and annotation data export

5.3 Performance Requirements

  • Recording latency: <200ms
  • Audio processing response time: <1s
  • Maximum supported audio length: 30 minutes

6. MVP Feature Priority

P0 (Must Have)

  • Basic recording functionality
  • Audio upload
  • Waveform display
  • Simple audio-text alignment

P1 (Important but Not Essential)

  • Audio trimming
  • Real-time volume display
  • Timeline annotation

P2 (Future Optimization)

  • Audio format conversion
  • Noise reduction
  • Batch processing