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No libraries required.

Call Recording App Specifications

Objective: Develop an Android 10+ call recording app in Java 7.

Features:

• Use AudioRecord for VOICE_COMMUNICATION.
• Save audio in WAV format with header updates.
• Background service for recording control.
• Separate thread for continuous audio reading and writing.
• WavEncoder class for file handling.
• Methods: init() for header, encode() for data, close() for cleanup.
• Integrate INService for management.

Additional Features:

• Status notifications.
• UI for managing recordings.
• Audio settings, noise reduction, echo cancellation.
• File encryption.

Steps:

1. Setup AudioRecord.
2. Manage WAV headers.
3. Implement INService.
4. Enhance UI, test across devices.