About This Application Note

The PlayBasic Reusable Subsystem Application Note contains a brief description and tuning instructions for DSP Concepts’ PlayBasic basic audio playback processing Reusable Subsystem.

PlayBasic – Basic Audio Playback Processing Reusable Subsystem

PlayBasic is DSP Concepts’ proprietary basic audio playback processing algorithm. It is available as a Reusable Subsystem in AWE Designer.

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Figure 1 shows the block diagram of PlayBasic’s internal processing. The components in blue blocks are tunable.

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Example

Figure 2 shows an example layout demonstrating the PlayBasic Reusable Subsystem. This example layout is designed to run in Native Mode with a file input; audio signals must be assigned to appropriate channels for running the layout on a target device.

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Tuning

The PlayBasic Reusable Subsystem includes an inspector which allows users to tune the equalization filters, the main volume, and the compressors. Figure 3 show the inspector panel of the PlayBasic Reusable Subsystem.

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Main Volume

The Main Volume is applied after the equalization filters and before the compressors. High Main Volume gains may be counteracted by the compressors depending on the compressors’ tunings.

Equalization Filter

Users can design equalization with five cascaded biquad filters.

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Table 1: Filter type options for equalization filter

Dynamic Range Compressors

As shown in Figure 1, there are four tunable dynamic range compressors. Each compressor has the following tuning parameters.

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