PAA Audio Vintage Delay v1.0.3 [WiN]

MOCHA | 21 October 2026 | 8.1 MB

这款插件采用 BBD 模型模拟回声，采样自真实硬件。
大多数复古延迟插件都是从功能愿望清单开始开发的，而这款插件却始于一把螺丝刀。我们测量了一台真实的桶式延迟（BBD）硬件，它采用的芯片系列和电路拓扑结构与 80 年代初期的模拟回声一脉相承：压缩扩展输入、BBD 时钟同步带宽、软削波反馈路径以及自激振荡直至饱和。我们测试了狄拉克脉冲、对数扫描、持续正弦波以及十几个不同反馈水平下的饱和曲线。

这款插件完全基于这些测量数据构建，而非市场营销方案。决定 300 毫秒重复频率听起来有多暗的系数（最小重复频率下截止频率为 820 Hz，最大重复频率下为 1037 Hz）直接来自扫描反卷积。自激振荡时的 11.5% 总谐波失真 (THD) 来自实际振荡回路的 1 kHz 频谱。所有参数的调整都不是凭耳朵“听起来复古”的。

在忠实还原原版的基础上，我们添加了一些原版无法实现的功能，最主要的是三频段频率倾斜，它可以分别延迟低音和高音。据我们所知，目前还没有其他延迟插件能够做到这一点。向右旋转旋钮，高音会略微滞后，低音则会迅速跟上。向左旋转旋钮，低音的尾音会成为混音中最长的，而高音则会变得紧致而短促。

它的独特之处在于：
* 每个频段的频率倾斜时间：独一无二，绝无仅有。
* 非对称饱和度，与硬件的实测奇偶谐波比相匹配。
* 多 LFO 漂移，而非单一正弦波：由主轴、滑轮和轴承摩擦噪声构成。
* 压缩扩展器泵浦功能内置于延迟线中，而非通过单独的 VCA 模拟。
* 每个频段的交叉反馈乒乓效应：当倾斜功能激活时，三个节奏同时运行。
* 带有内部备用方案的侧链闪避功能，即使没有连接侧链总线也能正常工作。

亮点
：* 人声：侧链闪避功能可避免回声干扰辅音。向右倾斜可获得仅包含辅音的“空气”尾音。
* 鼓组总线：向左倾斜可保持底鼓回声，并让踩镲的拍击声快速恢复。多频段延迟可保持低频的清晰度。
* 合成器和垫音：三频段乒乓延迟可提供单频段延迟无法实现的内置立体声宽度。
* 环境音效和纹理：冻结瞬间，叠加效果，并在下一个部分出现时清除。

标准控制：时间、反馈、混音、漂移、漂移速率、音调（2.5 kHz 处 ±12 dB 高架）、闪避量、频率倾斜、干声消除、冻结、清除和轻击。每个通道均可通过链接进行同步，支持 A/B 快照和复制功能，内置六个出厂预设，用户可通过 .xml 文件保存/加载无限个预设。

BBD-modeled analog echo, sampled from real hardware.
Most vintage-delay plugins start from a wishlist of features. This one started with a screwdriver. We measured a real bucket-brigade (BBD) hardware delay, the same chip family and circuit topology that defined analog echo from the early 80s onward: companded input, BBD clock-tied bandwidth, soft-clipped feedback path, self-oscillation through saturation. Dirac impulses, log sweeps, sustained sines, saturation curves at a dozen feedback levels.

The plugin is built from those measurements, not from a marketing brief. The coefficient that decides how dark a 300 ms repeat sounds (820 Hz cutoff at minimum repeat rate, 1037 Hz at maximum) came straight from the sweep deconvolution. The 11.5 % THD at self-oscillation came from a 1 kHz spectrum of the actual oscillating loop. None of it was tuned by ear until it “sounded vintage”.

On top of the faithful model we added a few things the original could never do, chiefly a three-band frequency tilt that delays bass and treble at different times. As far as we can tell, no other delay plugin does this. Roll the knob right and your highs float behind, basses come back fast. Roll it left and the bass tail is the longest thing in the mix while the highs are tight and short.

What makes it different
* Frequency-tilt time per band: unique, nothing else like it.
* Asymmetric saturation that matches the measured even/odd harmonic ratio of the hardware.
* Multi-LFO drift instead of a single sine: capstan + pulley + bearing-friction noise.
* Compander-pumping built into the delay line, not faked with a separate VCA.
* Cross-feedback ping-pong per band: three rhythms running at once when tilt is active.
* Sidechain ducking with internal fallback so it works even without a side-chain bus routed.

Where it shines
* Vocals: sidechain duck keeps the echo out of the way of consonants. Tilt right for an “air” trail of consonants only.
* Drum bus: tilt left to hold the kick echo and let the hi-hat slap come back fast. Multiband keeps the low end clean.
* Synths and pads: three-band ping-pong gives a built-in stereo width that no single-band delay can produce.
* Ambient and texture: freeze a moment, layer on top, clear when the next section comes in.

Standard controls: time, feedback, mix, drift, drift rate, tone (±12 dB high-shelf at 2.5 kHz), duck amount, frequency tilt, kill-dry, freeze, clear and tap. Sync per channel with link, A/B snapshots with copy, six factory presets and unlimited user presets via .xml save/load.