System Requirements Document for walkie-talkie

1. Introduction

AI Walkie is a modern mobile application designed to provide real-time, AI-powered push-to-talk communication. It allows users to communicate instantly through voice channels, similar to a traditional walkie-talkie but enhanced with artificial intelligence. The app is intended for users seeking a premium, efficient communication experience with features such as user authentication, public and private channels, an AI assistant, voice translation, voice-to-text, and an emergency mode.

2. System Overview

AI Walkie is a mobile application that facilitates real-time voice communication through AI-enhanced features. The app supports user authentication, channel-based communication, and an AI assistant capable of voice commands and translations. It is built using Flutter or React Native for the mobile application, WebRTC for real-time voice communication, a Node.js backend, and a PostgreSQL or Supabase database. The app ensures secure communication and scalable architecture.

2a. Product Interpretation and Delivery Boundary

AI Walkie is delivered as a mobile application with a focus on real-time voice communication. The app's primary experience is designed to mimic a traditional walkie-talkie, where users hold a button to speak and release it to send messages instantly. The app includes secure authentication, encrypted communication, and user permissions to ensure privacy and security. The architecture is designed to separate voice communication from normal application data to maintain low latency.

2b. Source Content Inventory

Not applicable as no content source directive is provided.

2c. Page Content and Component Coverage

Splash Screen

• Components: App logo, loading animation
• Actions: Transition to Login/Register screen
• States: Loading, error

Login/Register

• Components: Email/Phone/Google/Apple login options, username and profile picture setup
• Actions: Sign up, log in, password recovery
• States: Input validation, authentication success/failure

Home

• Components: Channel list, friend list, notifications
• Actions: Navigate to channels, add friends
• States: Loading, empty state, error

Walkie-Talkie Channel

• Components: Channel name, online users, current speaker, HOLD TO TALK button, microphone status, recent voice messages, AI button, mute/speaker button, channel settings
• Actions: Hold to talk, send voice message, mute/unmute, access AI assistant
• States: Speaking status, message sent, error

Channel Creation

• Components: Channel name input, public/private toggle, invite code generation
• Actions: Create channel, invite members
• States: Input validation, creation success/failure

Channel Members

• Components: Member list, online status, admin controls
• Actions: Remove/mute members
• States: Loading, error

AI Assistant

• Components: Command input, response display
• Actions: Voice command execution, conversation summarization, translation
• States: Processing, response received, error

Conversation History

• Components: Transcript list, search bar
• Actions: View past conversations, copy transcripts
• States: Loading, empty state, error

Friends

• Components: Friend list, add friend button
• Actions: Add/remove friends
• States: Loading, empty state, error

Notifications

• Components: Notification list
• Actions: View notifications
• States: Loading, empty state, error

Profile

• Components: Profile picture, username, account settings
• Actions: Edit profile, log out
• States: Loading, error

Settings

• Components: Notification preferences, privacy settings, language options
• Actions: Update settings
• States: Saving, success/failure

3. Functional Requirements

• As a user, I should be able to sign up and log in using email, phone number, Google, or Apple.

  • Provenance: User requirement
  • Lifecycle: Initiate authentication, input credentials, receive confirmation
  • Acceptance: Successful login or account creation

• As a user, I should be able to create a username and profile picture.

  • Provenance: User requirement
  • Lifecycle: Access profile settings, input username, upload picture
  • Acceptance: Profile updated with new username and picture

• As a user, I should be able to add friends.

  • Provenance: User requirement
  • Lifecycle: Search for friends, send friend request, receive confirmation
  • Acceptance: Friend added to list

• As a user, I should be able to use a large central HOLD TO TALK button to send voice messages.

  • Provenance: User requirement
  • Lifecycle: Press and hold button, speak, release to send
  • Acceptance: Message transmitted with low latency

• As a user, I should be able to create and join public and private channels.

  • Provenance: User requirement
  • Lifecycle: Create channel, join via name or invite code
  • Acceptance: Channel created or joined successfully

• As a user, I should be able to use an AI assistant for voice commands and translations.

  • Provenance: User requirement
  • Lifecycle: Activate AI, issue command, receive response
  • Acceptance: Command executed, response received

• As a user, I should be able to translate voice messages into different languages.

  • Provenance: User requirement
  • Lifecycle: Detect language, translate, convert to speech
  • Acceptance: Translation completed and played back

• As a user, I should be able to view text transcripts of voice messages.

  • Provenance: User requirement
  • Lifecycle: Access conversation history, view transcript
  • Acceptance: Transcript displayed and copyable

• As a user, I should be able to use an emergency mode to send urgent alerts.

  • Provenance: User requirement
  • Lifecycle: Activate emergency mode, send alert
  • Acceptance: Alert sent with optional location sharing

4. User Personas

• General User: Can authenticate, join/create channels, use push-to-talk, interact with the AI assistant, and manage friends.
• Channel Administrator: Can manage channel settings, remove or mute members, and handle channel-specific permissions.

5. Core User Flows

General User Flow

1. Authentication: User signs up or logs in using email, phone number, Google, or Apple.
2. Profile Setup: User creates a username and uploads a profile picture.
3. Channel Interaction: User joins or creates a channel, uses the HOLD TO TALK button to communicate.
4. AI Assistant: User activates the AI assistant for commands or translations.
5. Emergency Mode: User activates emergency mode to send alerts.

Channel Administrator Flow

1. Channel Management: Administrator creates a channel, sets permissions, and manages members.
2. User Moderation: Administrator removes or mutes members as needed.

6. Visuals Colors and Theme

• Muse: MARQ by Garmin
• Palette:
  • Background: #2E2E2E
  • Surface: #1C1C1C
  • Text: #E0E0E0
  • Primary: #FF9F1C
  • Accent: #3CBCC3
  • Muted: #737373
• Typography:
  • Headings: Barlow Condensed
  • Body: Saira
  • Scale: 1.25 modular, 48/36/24/18/16
• Shape Language: Circular gauges and bezels, precise ruled data rows
• Layout: Split-screen layouts, technical data presentation
• Motion: Needle sweeps, counting numbers, smooth transitions
• Motion Tempo: Restrained
• Hero Dimensionality: Dimensional_css
• Imagery: Macro photography of technological elements

7. Signature Design Concept

The AI Walkie app features a dimensional CSS hero with an interactive circular interface. The central HOLD TO TALK button is surrounded by a glowing ring indicating speaking status. The background is a deep graphite with subtle texture, accented by luminous highlights. This design reflects the precision and sophistication of a luxury instrument, aligning with the app's high-performance communication goals.

8. Interaction Model & Motion Direction

• Interaction Model: Animated
• Motion Tempo: Restrained
• Hero Dimensionality: Dimensional_css
• Landing Hero Motion Brief: The focal subject is the circular HOLD TO TALK button. Upon user interaction, the button glows and expands slightly, with a smooth transition indicating active communication. The background subtly shifts to emphasize the action, using needle-like animations to indicate speaker status. A reduced-motion state simplifies these transitions for accessibility.

9. Non-Functional Requirements

• Security: Implement encrypted communication, secure authentication, and user permissions.
• Performance: Ensure low latency in voice message transmission.
• Scalability: Design architecture to support future feature expansion.
• Usability: Provide a clean, intuitive interface with responsive animations.

10. Tech Stack

• Mobile Application: Flutter or React Native
• Real-Time Communication: WebRTC
• Backend: Node.js
• Database: PostgreSQL or Supabase
• AI Services: AI real-time voice API, speech-to-text, and text-to-speech services
• Real-Time Events: WebSocket-based

11. Assumptions and Constraints

• Assumptions: Users have access to a stable internet connection for real-time communication.
• Constraints: The app must maintain low latency and high security for voice communications.

12. Glossary

• Push-to-Talk: A communication method where users press a button to speak and release it to send the message.
• AI Assistant: An artificial intelligence feature that processes voice commands and provides responses.
• Channel: A virtual space where users can communicate with each other.
• Emergency Mode: A feature that allows users to send urgent alerts to selected contacts.