Operation Manual

4.6 Latency Settings 59
• To associate a performance to a given program change, click on the performance icon and
drag-and-drop it on the corresponding number.
• To unassign a program change, right-click/Ctrl-click on the performance name on the right
of the Program Changes window and click on unassign.
4.6 Latency Settings
The latency is the time delay between the moment you send a control signal to your computer (for
example when you hit a key on your MIDI keyboard) and the moment when you hear the effect.
Roughly, the total latency is due to three factors: the time taken by the sound card driver to send
MIDI signals to the Tassman, the time taken by the Tassman to compute the requested number of
sound samples and finally the time taken by the sound card driver to send back the sound samples
to the card and play them.
Within the Player you can control the amount of latency introduced by the Tassman.
• Choose the Audio Control Pannel command from the Audio menu.
• Adjust the buffer size.
• The total latency is equal to the number of buffers multiplied by the number of samples per
buffer divided by the sampling rate.
You can also choose the sampling rate and the audio format (16, 24, 32 bits) in the Latency
window. The panel and settings may look different depending on which sound card you are using.
It is of course desirable to have as little latency as possible. The Tassman will however require
a certain latency to be able calculate sound samples in a continuous manner. This time depends on
the power of your computer and the size and nature of the patch you are playing.
Note that the content of the dialog depends on the driver selected in the Audio Settings menu.
4.7 Instruments and Presets
Instruments are created in the Builder and saved in the Browser under the instruments folder. A
given instrument can be loaded into the player in the following way:
• Double-click on an instrument in the Browser. Note that the instrument will load in the
current view selected (Player or Builder) in the Tassman.
It is possible to obtain very diverse sounds with a given instrument depending on the settings of
the different controls. When you obtain a sound that you like, it is possible to save the configuration
of the different controls as Preset for the instrument so that you can rapidly reproduce the same
sound. This is one of the advantages of software over hardware: you can find again different
configurations without having to tweak all the knobs again.