v0.8

Author: hqrrr

CMakeLists.txt

@@ -2,7 +2,7 @@
 
 cmake_minimum_required(VERSION 3.22)
 
-project(PerceptoMap VERSION 0.7)
+project(PerceptoMap VERSION 0.8)
 
 
 ### Dependency versions ###

README.md

@@ -44,6 +44,7 @@ Unlike typical spectrum or spectrogram analyzers, it supports perceptual visuali
 - Freeze frame mode and interactive mouse hover to inspect frequency and loudness at any point
 - Configurable FFT size for balancing time resolution and frequency resolution.<span style="color: gray;">[added in v0.6]</span>
 - Independent scroll speed control, allowing smooth visualization at different FFT sizes and overlap settings without distorting the spectral data. <span style="color: gray;">[added in v0.6]</span>
+- Adjustable y-axis frequency range. <span style="color: gray;">[added in v0.8]</span>
 
 
 ## Screenshots
@@ -214,6 +215,7 @@ Unlike typical spectrum or spectrogram analyzers, it supports perceptual visuali
 | Chroma | ✅ Done (v0.5) | Pitch class mapping, projection of spectral energy onto 12 pitch classes (C, C#, D…) | Triangular chroma filter bank built from STFT bins, 12 overlapping filters per octave; energy mapped to pitch classes regardless of octave; supports smooth pitch transitions and partial overlaps |
 | Enhanced STFT with Time–Frequency Reassignment (Linear+) | ✅ Done (v0.6) | Sharper time–frequency localization by reassigning each STFT bin’s energy to more accurate time/frequency coordinates | Based on [[hal-00414583: Time-Frequency reassignment: from principles to algorithms](https://hal.science/hal-00414583/document)], implemented with Gaussian-window STFT and its time & frequency derivatives. Instantaneous frequency and group delay estimates are used to re-map spectral energy, improving localization of transients and harmonics compared to standard STFT. Supports same FFT size and log/linear axis options as Linear mode |
 | Enhanced Mel Spectrogram with Time–Frequency Reassignment (Mel+) | ✅ Done (v0.7) | Mel-scaled spectrogram with sharper harmonic ridges and crisper transients by reassigning each STFT bins energy to its true instantaneous frequency, then projecting onto the Mel axis | Based on the same reassignment principle as Linear+. Mapped to Mel. |
+| Y-axis Range Control | ✅ Done (v0.8) | Precise control over visible frequency band | Dual-handle range slider + editable min/max fields; double-click reset |
 | Tempogram / Rhythm Map | ⏳ Planned | Visualizes perceived tempo and rhythmic periodicities over time | - |
 | Spectral Flatness / Contrast | ⏳ Planned | Measures of timbral characteristics | - |