TL Space DSP Usage

TDM Systems

On Pro Tools HD and HD Accel systems, TL Space can be instantiated as TL Space Short, Medium and Long. The plug-in name displayed in the menu refers to the maximum reverb time as shown in the table below.

The different versions of TL Space have different DSP usage requirements. A Pro Tools HD card contains nine identical DSP chips. A Pro Tools HD Accel card contains nine DSP chips, four of which offer external SRAM. In some modes, TL Space requires Accel chips with external SRAM. The following table shows the TL Space DSP requirements by reverb time.

 

Plug-In	Format	DSP
TL Space Short	TDM	Any HD DSP chip
TL Space Medium	TDM	Any HD Accel chip with external SRAM
TL Space Long	TDM	Any HD Accel chip with external SRAM

The number of DSP chips required is a function of the number of inputs and outputs, and the type of processing in use. The maximum chip usage is 8 DSP chips across two HD Accel cards. The following table shows the TL Space DSP requirements by channel.

 

Input	Output	Maximum Number of DSP Chips
Mono	Mono	1
	Stereo	2
	Quad	4
	5.0	5
Stereo	Stereo	2
	Quad	4
	5.0	5
True Stereo	Stereo	4
	Quad	8

These numbers represent the maximum possible DSP usage of TL Space Long. For example, TL Space Medium has only 50% of the DSP requirement in supported stereo and quad channel formats.

CPU Usage

On all Pro Tools systems, TL Space can be instantiated as an RTAS plug-in. This impacts the performance of the CPU. CPU usage can be monitored in the System Usage window.

To optimize performance of TL Space for RTAS processing, set the Hardware Buffer Size in the Playback Engine to 512 samples.