TemperPlayer

I wanted a player that treated signal analysis as part of listening: useful meters, a compact menu-bar surface, and pitch control that did not smear transients or collapse the stereo image.

The app combines a responsive native interface with a deliberately small low-level audio boundary. Apple frameworks cover the application audio graph and common compressed formats, while the custom core owns the DSP where I wanted exact control.

I built the SwiftUI application, SQLite-backed library, queue and playlist flows, menu-bar player, waveform, spectrogram, and multiband goniometer. In Zig, I implemented FLAC/WAV decoding, mastering measurements, and an identity-phase-locked phase vocoder with transient resets and Kaiser-windowed sinc resampling.

Finish hardening the current library and playback changes, test on more Macs and audio devices, and add formats only when their playback path is measured and reliable.