[滤波器插件]Tokyo Dawn Labs TDR Ultrasonic v1.0.2 [WiN]（4.9MB）

MOCHA | 09 April 2025 | 4.9 MB

安装方法：

安装前请卸载/移除所有旧版本！
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TDR 超声波是一种滤波器，旨在控制过采样录音、处理或播放链路中超声波内容的累积。其目的是防止超声波进入非线性系统。

非线性系统的例子包括峰值限制器、创意失真设备、压缩器和其他形式的调制。模拟采集设备（例如磁带录音机和刻盘系统）也表现出非线性行为，所有播放系统也一样（尽管程度较轻）。

非线性系统产生的总失真会随着输入信号带宽的增加而增加。这适用于可听内容和不可听内容，并且适用于整个制作过程：虽然窄带单声道信号（例如吉他或人声）可以艺术地处理大量失真，但宽带混音只需极少量的饱和度就能在听觉上崩溃。

这是因为非线性不仅会产生谐波失真，还会产生互调失真，这是一种很大程度上非谐波的失真。这种失真会在原始分音频率的和与差处产生新的分音。因此，这些新的分音最终会超出或低于源频率，而后者可能最终进入可听带宽。

TDR 超声波可在更大范围内控制相同的效果。它可以无损地减少超声波内容进入非线性设备时引起的互调失真。可

自由调整大小的用户界面提供对所有传统滤波器参数和一系列奇特技巧的直观访问，例如动态超声波门限、在奈奎斯特频率下强制无限衰减，以及简洁的“全部旁路”功能，允许对超声波滤波器对整个混音的影响进行 A/B 测试。精确的超声波频率分析仪可以详细了解超声波频谱和滤波效果。

显著特点：
线性相位、连续可变斜率滤波；
超声波门
限；支持高达 20MHz 的采样率；
可自由调整大小的硬件加速用户界面，支持全屏显示。

TDR Ultrasonic is a filter designed to control the accumulation of ultrasonic content in oversampled recording, processing, or playback chains. The idea is to prevent ultrasonics from running into nonlinear systems.

Examples of nonlinear systems are peak limiters, creative distortion devices, compressors, and other forms of modulation. Analog capture devices such as tape recorders and disc cutting systems also exhibit nonlinear behavior, as do all playback systems (albeit to a lesser degree).

The total distortion produced by a nonlinear system grows with the incoming signal bandwidth. This is true for both audible and inaudible content, and applies throughout production: While a narrow-band monophonic signal such as guitars or vocals can artistically handle huge amounts of distortion, a wideband mix can audibly fall apart with only the slightest amount of saturation.

This is because nonlinearities not only produce harmonic distortion but also intermodulation distortion, a largely non-harmonic type of distortion. This form of distortion produces new partials at the sum and difference of the original partials’ frequencies. As a result, these new partials end up beyond and below the source frequencies, with the latter possibly ending up in the audible bandwidth.

TDR Ultrasonic controls the same effect, on a larger scale. It allows for losslessly reducing the amount of intermodulation distortion otherwise provoked by ultrasonic content running into nonlinear devices.

A freely resizable user interface provides intuitive access to all traditional filter parameters and a set of exotic tricks such as a Dynamic Ultrasonic Gate, the enforcement of infinite attenuation at Nyquist, and a neat “Bypass All” function allowing for A/B testing of the effect of ultrasonic filters over whole mixes. A precise ultrasonic frequency analyzer gives detailed insight into the ultrasonic spectrum and the filtering in action.

Notable Features
Linear phase, continuously variable slope filtering
Ultrasonic gate
Support for sample-rates up to 20Mhz
Freely resizable hardware accelerated user interface, full-screen capable

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