Wolfpack_Final_Presentation
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This document describes a smart music player app called Wolfpack that allows multiple Android devices to connect and play music in sync using WiFi Direct and P2P networking. The app was tested with groups of 5 participants who used it to simulate music playback at a party. Users observed the app had potential but needed improvements to device discovery reliability and synchronization. Future work is planned to enhance the user interface, connectivity, and add new interactive features like integrating with social networks or sharing microphones.
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Wolfpack_Final_Presentation
- 1. Wolfpack A Smart Music Player Cluster Using Android P2P Suliman Khan, Deepak Srinivasan, Anshuman Dash
- 2. Recap of Idea DEVICE-01 DEVICE-02 DEVICE-03 DEVICE-01 : Samsung S6 DEVICE-02 : Moto G2 DEVICE-03 : Google Nexus Available Speakers 1. Share Capability (Speaker) 2. Discover Capability 3. Choose + Connect 4. Play Music
- 3. Technology and Hardware Used Technology Devices Android Wi-Fi Direct P2P using Service Discovery X 2 X 2
- 4. Architecture MUSIC PLAYER ANDROID APP (Conductor) ANDROID SERVICE MUSIC PLAYER ANDROID APP (Speaker) ANDROID SERVICE Broadcast Capability Discover Capability Register Capability Share Device List Register Capability Stream Music NANO HTTPD Web Server Share Device List
- 5. Video Demo
- 6. Challenges Faced • Understanding • P2P • Android WiFi Direct • Android Services • Implementation • Capability Broadcast WiFI Direct– • WiFi Direct Communication was unidirectional • Needed to discover clients + capabilities before connecting • Solution: Used Android P2P Services • Audio Synchronization • Slight delay between audio playing on multiple devices • Solution: Find Network Delay using control message and buffering audio before streaming
- 8. User Study Plan • Step-1: Deploy the app on Google Play Store. • Step-2: Recruit 10 participants (2 groups of 5 each) and ask them to download and install the app prior to study. • Step-3: Simulate a Party (with real dinks and chips) • Step-4: Give a small overview of the study. (Instructions about using the app will be available on Google Play) and request users to sign consent form. • Step-5: Let users use the app for 15 mins. Observe and record their behavior (Photographs/Videos, personal notes etc.) • Step-6: Request users to fill questionnaire prepared prior to study. • Step-7: Conduct interview about the experience from each participant and record responses.
- 9. User Study Overview Total Participants: 10 Smartphone Usage Experience Multiple Device Ownership Sharing Capabilities of Multiple Devices
- 12. User Study Results (1/2)
- 13. User Study Results (2/2) Additional Feedback and Observations • Need better reliability in case of device discovery • More flexibility for the client to disconnect and reconnect to conductors • Need better way of identifying neighboring devices • Most of the users preferred connecting from client to the music server • Ability to rate the conductor and use this as a metric for people to select a conductor • See the music/playlist played by the conductor before connecting
- 14. Future Work • Improve the look and feel of the app to make it more usable • Improve the reliability of device and service discovery • Improve reliability of connection between devices • Handle interrupts like phone calls, messages etc. on clients and server. • Figure out ways to improve synchronization of speakers • Incorporate usability features suggested by users • Possibly integrate with social networking sites • Extend functionality to other apps like Microphone, Camera etc.
- 15. Lessons Learned Range of methods to communicate and use the methods for interaction between devices at an application level The possibilities that device interaction opens up for application development considering people currently own more than one smart device. Android app development, WiFi Direct, Android P2P, Socket Programming in Android, Audio Streaming using Nano HTTPD Evaluating the effectiveness and usability of the developed system by conducting user studies
- 16. Live Demo
- 17. THANK YOU