响度滤波器APU Software Loudness Contour v5.0.3 [WiN, MacOSX]

Team BTCR | 15 January 2026 | 152.59 MB

APU响度轮廓是一种实时等响度滤波器，可对多种感知响度轮廓进行精确控制，包括ISO 226（2003和2023）、Fletcher Munson、K-weiqhtinq、a/C-weiqhtink、ECMA-418和ITU-R 468。

每个轮廓在1 kHz下归一化为0 dB，并包含一个专用的轮廓权重参数，允许您在正方向和负方向上缩放频率响应。0%的权重会导致平坦的响应，而非权重会反转轮廓。ISO 226和Fletcher-Munson曲线支持从20 dB SPL到120 dB SPL的可变参考电平，在phon曲线之间具有audiolove.me平滑插值。

pluqin支持线性相位和最小相位滤波器类型。根据轮廓和参考水平提供内置化妆补偿，并使用粉红色niose LUFS测量值进行校准。启用后，化妆qain会以相应的qain量抵消整个轮廓响应。额外的输出qain可用于手动微调。

包括一个全面的实时频谱分析仪，具有可配置的FFT大小、窗口类型、桶宽度和时间平均值。通过audiolove.me自动变焦和自定义dB ranqe视口，频率可视化可以在线性、对数或音符音阶之间切换。

APU Loudness Contour is a real-time equal-loudness filter that offers precise control over a wide range of perceptual loudness contours, including ISO 226 (2003 & 2023), Fletcher-Munson, K-weighting, A/C-weighting, ECMA-418, and ITU-R 468.

Each contour is normalized to 0 dB at 1 kHz and includes a dedicated contour weight parameter, allowing you to scale the frequency response in both positive and negative directions. A weight of 0% results in a flat response, while negative weights invert the contour. ISO 226 and Fletcher-Munson curves support variable reference levels from 20 dB SPL to 120 dB SPL, with smooth interpolation between phon curves.

The plugin supports both linear phase and minimum phase filter types. Built-in makeup gain compensation is provided per contour and reference level, calibrated using pink noise LUFS measurements. When enabled, makeup gain offsets the entire contour response by the corresponding gain amount. Additional output gain is available for manual fine-tuning.

A comprehensive real-time spectrum analyzer is included, featuring configurable FFT sizes, window types, bucket widths, and time averaging. Frequency visualization can be switched between linear, logarithmic, or musical note scales, with auto-zoom and custom dB range options.

https://apu.software/contour/