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支持系统：Windows MAC

音源厂商：https://www.voxengo.com/product/spanplus/

独立安装程序 PC + MAC

文件大小：40MB

SPAN Plus 是一款实时"快速傅里叶变换"(FFT) 音频频谱分析仪，支持 VST3、AudioUnit 和 VST 插件，适用于专业音乐和音频制作应用。

SPAN Plus 是免费 SPAN 插件的扩展版本：SPAN Plus 提供了多项附加功能，例如 PNG 文件导出、用于多轨频谱比较的实时频谱导入/导出、静态频谱显示以及"宽"显示模式。

SPAN Plus 为您提供了一个非常灵活的"模式"系统，您可以使用它来设置频谱分析仪的首选项。您可以指定傅里叶块大小（以样本为单位）、FFT 窗口重叠百分比以及频谱的可视斜率。此外，您还可以选择显示所需类型的辅助频谱（例如实时最大值、历史最大值）。频谱可以进行平滑处理，以便于查看。

除了多轨频谱比较之外，SPAN Plus 还支持多通道分析，可以设置为同时显示来自两个不同通道或通道组的频谱。 Spectrum 的色彩可根据个人喜好选择。

SPAN Plus 还具有输出电平表（可调整弹道和积分时间）、EBU R128 和 K 系统电平表（包括校准 K 系统电平表）。SPAN Plus 可显示电平表统计数据、动态余量估算和削波检测。此外，还提供相关电平表。
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SPAN Plus is a real-time "fast Fourier transform" (FFT) audio frequency spectrum analyzer VST3, AudioUnit, and VST plugin for professional music and audio production applications.

SPAN Plus is an extended version of the freeware SPAN plugin: SPAN Plus provides several additional features such as PNG file export, real-time spectrum import/export for multi-track spectrum comparisons, static spectrums display, and a "wide" display mode.

SPAN Plus provides you with a very flexible "mode" system which you can use to setup your spectrum analyzer preferences. You may specify Fourier block size in samples, FFT window overlap percentage, spectrum's visual slope. Beside that you can choose to display secondary spectrum of a desired type (e.g. real-time maximum, all-time maximum). Spectrum can be smoothed out visually for an easier examination.

Beside multi-track spectrum comparison, SPAN Plus supports multi-channel analysis and can be set to display spectrums from two different channels or channel groups at the same time. Spectrum's color can be chosen to taste.

SPAN Plus also features output level metering with adjustable ballistics and integration time, EBU R128, K-system metering (including calibration K-system metering). SPAN Plus displays level metering statistics, headroom estimation, and clipping detection. Correlation metering is available as well.
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