Crate baton_studio 

Talk to your Presonus STUDIO1824c

This library allows you to control most of the functions of the 1824c audio interface.

The Presonus STUDIO1824c is a USB audio interface that features

• 18 input channels:
  • 8 analog input channels with mic/line/instr preamps
  • 2 didgital S/PDIF input channels
  • 8 digital ADAT input channels
• 18 DAW channels i.e. channels that appear as output channels from the point of view of the computer
• 24 output channels:
  • 8 analog line output channels
  • 2 stereo headphone outputs (total 4 channels)
  • 2 Main output channels
  • 2 digital S/PDIF output channels
  • 8 digital ADAT output channels
• Button for 48V phantom power for the 8 mic input channels
• Button for Main output mute
• Button for Main output mono
• Button to switch between instrument- and line-level on the 1/4 inch inputs on channel 1 and 2

Mixer

The internals of the 1824c contains 9 separate mixes. One mix contains stereo fader controls for all 18 input channels plus all 18 DAW channels for a total of 36 channels. The output for mix number one is output channels 1 and 2, and at the same time Main output channels 1 and 2, and stereo headphone output number 1. The output for mix number two is output channels 3 and 4, and also stereo headphone output number 2. The output for mix number three is output channels 5 and 6. Mix four is output channels 7 and 8. Mix five is the 2 digital S/PDIF output channels. Mix six through nine is the ADAT digital output channels (six -> ADAT 1,2, seven -> ADAT 3,4, etc.)

Think of it as a mixer with 36 input channels and 9 buses.

Signal flow

A signal flow from one input channel to all nine buses looks something like this:

          +-->Fader left--->\                /-->Line Output 1
Input 1-->|                  |Stereo fader 1|
          +-->Fader right-->/                \-->Line Output 2
          |
         ...
          |
          +-->Fader left--->\                /-->Line Output 7
          |                  |Stereo fader 4|
          +-->Fader right-->/                \-->Line Output 8
          |
          |
          +-->Fader left--->\                /-->S/PDIF Output left
          |                  |Stereo fader 5|
          +-->Fader right-->/                \-->S/PDIF Output right
          |
          |
          +-->Fader left--->\                /-->ADAT Output 1
          |                  |Stereo fader 6|
          +-->Fader right-->/                \-->ADAT Output 2
          |
         ...
          |
          +-->Fader left--->\                /-->ADAT Output 7
          |                  |Stereo fader 9|
          +-->Fader right-->/                \-->ADAT Output 8

The signal flow is identical for all of the 36 input channels. With this library you can control all of the Fader left and Fader right faders, and all of the Stereo faders. In total you can control 36*2=72 left/right Faders and 9 Stereo faders.

The Fader left and Fader right, or input faders are controlled with set_input_fader(). The Stereo faders, or output faders are controlled with set_output_fader().

Buttons

The four buttons on the front panel of the audio interface can be controlled with set_button().

Structs

Command

Commands to send to the audio device.

State

State of the Presonus STUDIO1824c audio interface.

Enums

Button

Push buttons on the front panel of the Studio 1824c.

Channel

Output channels

Value

Value for faders

Functions

db_to_gain

Convert from dB to integer gain

gain_to_db

Convert from integer gain to dB