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The following table lists the Mastering Suite's performance cost for an Audio Device with a mixed output channel configuration of 7.1.4 (12 channels). The performance cost is measured as a percentage of CPU usage. The Effect is processed on a single CPU core. Two Mastering Suite module configurations were used (listed below). The performance cost was measured with all modules active, and then with a single module active at a time.

As mentioned, the Audio Device is configured for a mixed output; that is, it does not process Audio Objects. The performance cost of an object-enabled pipeline will be detailed in a subsequent section.

Configuration 1: Parametric EQ active, 6 bands; Compressor active, 4 bands; Volume active; Limiter active, Soft mode.

Configuration 2: Parametric EQ active, 3 bands; Compressor active, 2 bands; Volume active; Limiter active, Soft mode.

The following table lists the relative processing costs of the different Limiter module modes. The measurements were taken under the same conditions described in the previous section.

This section details the performance cost of the Mastering Suite when the Audio Device is configured for an Object-based pipeline. The Mastering Suite now has to process three streams of audio:

The processing cost for Audio Object processing is higher and directly proportional to the maximum number of Audio Objects supported. The following table lists the performance cost for different maximum Audio Objects supported.

One important difference when processing an Object-based pipeline is that there is additional processing done when profiling to produce the metering values (Compressor and Limiter) for each Audio Object (see the following image). This additional processing is reflected in the measured performance cost displayed in the Advanced Profiler's CPU tab. This value does not reflect the true performance cost of the Mastering Suite; the release build of the Mastering Suite does not contain the profiling code. To obtain the true performance cost without the additional processing, the Release build of the Mastering Suite was used. The following table lists these values.

Configuration: Parametric EQ active, 6 bands; Compressor active, 4 bands; Volume active; Limiter active, Soft mode.

Configuration: Parametric EQ active, 3 bands; Compressor active, 2 bands; Volume active; Limiter active, Soft mode.

Clearly, the Parametric EQ and Compressor modules are the most costly in terms of processing, especially when all bands are enabled. Depending on your processing budget, it may be beneficial to reduce the number of bands in these modules.