stereo soundfield analyzer
I really like this tool. The correlation (left side) shows the width across the spectrum, while the pan (right side) shows the panning (energy distribution) across the spectrum. So if I have a wide element but some frequencies panned left, I can see that is wide on the correlation meter and see that it’s panned on the pan meter. The vectorscope (center) monitors the phase relationship in the stereo field.
🟢 toneboosters.com/tb_goniometer_v1
FFT analyzer
A modern spectrum analyzer with a focus on human audio perception. Recent release, very well thought-out. Pretty much a complete package. Can layer up to four graphs: same input with different settings (Mid, Side, smoothing etc.) or direct input and the sidechain input for referencing.
TDR Prism (free)
oscilloscope
Modern oscilloscope with waveform stabilization so it won’t slide right to left anymore, making easier to analyze small signal changes.
🟢 pressplay-music.com/wave-observer
Press Play Wave Observer free
oscilloscope
A minimalistic oscilloscope that can sync the display with the BPM of the song (and provide a stable and readable plot). The sync features are the most important when it comes to oscilloscopes. Can do side-chain so you can layer two signals.