SoundFlow is a comprehensive .NET audio framework providing cross-platform audio processing, synthesis, MIDI handling, and security features. It features a modular architecture with components, modifiers, and analyzers that can be chained together to build audio applications. The framework supports audio playback/recording, real-time effects, MIDI sequencing, audio analysis, encryption, watermarking, and fingerprinting. It includes extensive platform-specific native libraries (MiniAudio, FFmpeg, PortMidi, WebRTC APM) built for Windows, Linux, macOS, iOS, Android, and FreeBSD. The repository includes numerous sample applications demonstrating various capabilities, from simple playback to complex security-enabled audio processing.
This is an Android demo application for real-time audio/video talkback (intercom) communication. It implements a full pipeline: audio/video capture, echo cancellation (multiple AEC algorithms: Speex, WebRTC AEC/AECM/AEC3, custom triple AEC), noise suppression (Speex, WebRTC NS/NSX, RNNoise), encoding (Speex, Opus, OpenH264, system H.264), network transport (TCP, UDP, AUDP), jitter buffering (adaptive), decoding, and playback. The architecture consists of a foreground service, a main activity with extensive settings UI, and background media processing threads (MediaPocsThrd, ClntMediaPocsThrd, SrvrThrd) that use user-defined callbacks for extensibility. The app is heavily configurable with presets for effect levels and AEC tendencies. It relies on pre-compiled native libraries (JNI) for signal processing and codecs. The codebase is tightly coupled to the demo app and uses deprecated Android Camera API, but demonstrates non-obvious skill in integrating multiple audio processing libraries and adaptive jitter buffer algorithms.