Launch minicom with the following command. If you do not have minicom installed, install it using apt.

We will use the minicom terminal program to perform the test. Connecting the RX and TX together will send any data transmitted from the Raspberry Pi through the TX pin back to the receive buffer through the RX pin. If you are using the UART port without any expansion boards attached, you can connect the UART RX (pin 8) and TX (pin 10) pins on the 40-pin GPIO header. = Please contact PreSonus Technical Support by creating a Support Ticket at My. for further assistance.You can test if the UART port on your Raspberry Pi works by performing a loopback.Ĭonnect the RX and TX pins on the Serial Pi Plus or Serial Pi Zero, as shown in the image below. See below.įor more information how to use loopback and how to avoid feedback then please have look at the following article Here you can add a stereo input and assign the L + R to Virtual in 1 and Virtual in 2 (19 + 20). Now that Virtual is enabled, Line Out 1/2 (Studio 1824c) that you have set as your output in your application will come in on Input 1 & 2 in Studio One. See below screenshots of Universal Control and Studio One Audio I/O Setup.Ģ. When Loopback is enabled and “Virtual” is selected, the audio from another application will be recorded on the last pair of driver inputs (19/20). Please note that we do not recommend monitoring the signal coming back from your application as this can cause feedback.ġ.

Create Stereo audio track in Studio One and set input to input L + R. Now that Mix 1/2 is enabled, Line Out 1/2 (Studio 1824c) that you have set as your output in your application will come in on Input 1 & 2 in Studio One. See below screenshots of Universal Control and Studio One Audio I/O setup.Ģ. When Loopback is enabled and “Mix 1/2” is selected in Universal Control, the audio from another application will be recorded with the audio source connected to analog inputs 1 and 2 on your Studio 1824c. Please note that we do not recommend monitoring the signal coming back from your application as this can cause feedback.(Please ensure the speaker button is not blue and is turned off as seen below)ġ. Here you can add a stereo input and assign the L + R to Virtual in 1 and Virtual in 2 (3 + 4). Now that Virtual is enabled, Main Out 1/2 (Studio 24c) that you have set as your output in your application will come in on Input 1 & 2 in Studio One. See below screenshots of Universal Control and Studio One Audio I/O.Ģ. When Loopback is enabled and “Virtual” is selected in Universal Control, the audio from another application will be recorded on the last pair of driver inputs (3/4). (Please ensure the speaker button is not blue and is turned off as seen below)ġ. Please note that we do not recommend monitoring the signal coming back from your application as this can cause feedback. In this case we have used Skype output as an example.Ĥ. Now that Mix 1/2 is enabled Main Out 1/2 (Studio 24c) that you have set as your output in your application will come in on Input 1 & 2 in Studio One. See below screenshots of Universal Control, Skype and Studio One Audio I/O Setup.Ģ. When Loopback is enabled and “Mix 1/2” is selected in Universal Control, the audio from another application will be recorded with the audio source connected to analog inputs 1 and 2 on your Studio 24c.

Below we will provide an example of Loopback on the Studio 24c and the 1824c and how it routes into Studio One.ġ. Recording a vocal in real time over a karaoke track played from a web browser or media player.įrom Universal Control, you can enable or disable Loopback and pick the streams on which the loopback audio will be recorded.Recording the audio from Skype, video game or YouTube video for a podcast or livestream.Loopback can be useful in a variety of situations: Please see list of compatible Studio Series loopback devices: Please also ensure that the firmware is up to date on your Studio Series interface. This application contains the drivers for your Studio series interface. Please note: Please ensure that you have downloaded, installed and are using the latest version of Universal Control application. The Windows drivers for the Studio Series interfaces provides two virtual streams that allow you to record the output of one audio application in another application.

Loopback test