Spectre is a multi-instrument real-time audio analyzer for Mac OS X. Designed in Cocoa from the ground up, Spectre proudly takes advantage of Quartz, OpenGL, CoreAudio, and other solid OS X interface features.

Spectre focuses squarely on live audio analysis by offering 9 different multi-channel and multi-trace meters. Each meter can have any number of traces or indicators, and each trace can have it's own number of input channels, mixing, filtering, ballistics and color (including transparency). You can have as many meters (or copies of meters) as your screen will allow!

Spectre not only analyzes inputs from your audio hardware, but can also receive input from network sources by using Apple's AUNetSend/AUNetReceive Audio Unit pair. With this feature, you can analyze audio from any Audio Unit insert on your multitrack (or other AU host) to Spectre running on the same or on another computer.

Spectre is extremely flexible and accurate in it's display: utilizing optimized Quartz, OpenGL and clever memory management, each meter can be resized in realtime without interruption. Every meter has a set of useful factory presets, and meter settings (or sets of meters) can be saved.

Features:

• Based on the familiar Aqua interface
• Optimized for Altivec/SSE
• Utilizes (and requires) features in OS X 10.4 (Tiger)
• Preset and user ballistics
• Level meter with variable bars, indicator types and gradient colors
• VU Meter with variable styles and indicators
• Multi-trace Spectrograph with up to 1/48 octave analysis
• Multi-trace triggered oscilloscope
• Multi-trace spectrogram
• Scrolling multi-trace waveform meter
• Lissajous meter with Stereograph, X/Y and vector modes
• Multi-trace Power Balance meter
• Multi-trace phase correlation meter
• Saveable and recallable snapshots for every meter
• Support for all audio hardware
• Supports input from Audio Unit hosts via AUNetSend/AUNetReceive
• Support for multiple channel inputs

Changes in v1.7.0

• Performance and stability improved
• Fully optimized for Retina displays
• Audio Bundles enable you to create groups of channels for your audio input hardware
• Comprehensive Full Screen support
• Meter configuration is now integrated into each Meter
• Traces now have their own spectral analysis settings
• Updated User Guide in iBooks and PDF formats

Changes in v1.6.0

• New LU Meter and LU History Meter (EBU R128 loudness standard).
• Manual has been updated and is now in PDF format.
• Resolves an issue where the app would not launch on 10.7.4.
• Addresses minor issues related to performance and stability.