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--- loopy_pro:troubleshooting_audio_problems [2024/02/12 12:21] – created espiegel123
+++ loopy_pro:troubleshooting_audio_problems [2025/01/23 05:47] (current) – page now on wiki.loopypro.com espiegel123
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-====== Loopy Pro: Troubleshooting  Audio Connections ======
-As of iOS/iPadOS 17.3, the OS itself manages the connection to audio interfaces, and apps have little influence. In most cases, when there are problems with an audio device connection the issue is system-wide and out of the control of individual apps.
-The information in this article is intended to help you get connected.
-Note: Logic Pro on iPadOS has access to non-public APIs and offers connection choices when multiple interfaces are connected that other apps do not have.
-The way that iOS/iPadOS works, there can be only one audio input and one audio output device at a time. The OS automatically makes the last connected device the designated input and/or output device. If a device is input only or output only, it will take over whichever function it provides. Headphones with mics are input+output devices as far as the OS is concerned. Headphone dongles -- even if no headphones are attached MAY look to the OS like an output device. Some USB hubs have built-in headphone ports. These may or may not conflict with an audio interface unless the interface is connected after the system has booted.
-===== First Troubleshooting =====
-==== Preparation ====
-These steps may seem superfluous, but rebooting and reconnecting solves a surprisingly large number of issues.
-If you have a Loopy Pro project that has audio in it, you are set. If not, disconnect your device and make a recording in Loopy Pro using the built-in mic. Save the project. You will use it later to check playback.
-  * Fully shut down your device using "Slide to power off" rather than putting it to sleep at waking it up.
-  * Disconnect everything connected to your device.
-  * Power the device up and log-in.
-  * Re-connect your peripherals.
-==== Checking the available devices ====
-Use the system's Control Center to see what output devices the OS sees. The details may vary slightly on some versions of the OS. If these don't work, find out how to display Control Center on your device by searching on the web.
-   * Swipe down from the upper-right corner to display the Control Center.
-   * On most devices, the upper-right tile will be for sound output.
-   * Tap on the Speaker icon (circled in the picture below) to see a list of the possible output devices. Take a screenshot if you will need further troubleshooting help.
-If your device does not appear in the list, see the Common Issues section below.
-If your device does appear:
-   * Launch Loopy Pro
-   * Open the project that you created in the Preparation step.
-   * Try playing the project.
-If you don't hear the audio:
-   * Make sure the volume is turned up on your device using its volume buttons.
-   * Check in Loopy's mixer to see if levels show on the Master channel when playing back.
-   * If the audio is not working right, choose System Settings from Loopy's main menu and try a different sample rate or buffer size. Try playback again and try another sample rate or buffer size and repeat to try the available options.
-If you still don't hear audio, launch Apple's Music app and see if the audio plays back correctly.
-If the audio does play back correctly, send diagnostics to Loopy Pro support by following the directions [[https://wiki.audiob.us/doku.php?id=loopy_pro:sending_diagnostics|here]].
-===== Common Issues =====
-The most common issues are:
-   * Something has gone wonky. A lot of connection problems are solved by disconnecting all peripherals, rebooting and reconnecting.
-   * A bad cable. A lot of connection issues are the result of a cable not working properly.
-   * The audio interface isn't being supplied enough power. Even if the interface's lights come on, it may not have enough power to operate correctly. When this is the case, the solution partly depends on what type of iPad or iPhone you have. If using a device with a lightning connector, make sure that you are using the Apple USB adapter that includes a lightning port as well. The adapter's lightning port should be connected to a power supply. Depending on the interface, the Apple USB charger should be sufficient. In some cases, you may need a higher-wattage USB charger. You can also use a sufficiently-powered powered USB hub.
-   * The audio interface is not class-compliant. iOS/iPadOS devices (as of 17.3) generally require that the interface be class-compliant. While the OS technically has opened the possibility of custom drivers, there are currently no audio interfaces with custom iOS drivers.
-   * The audio interface firmware needs updating. This is not terribly common, but is sometimes the issue.
-   * More than one audio output or input device is connected. Some MIDI peripherals with USB connections look to the OS like an audio interface. Make sure that your audio interface gets plugged in after your MIDI peripheral. You will not be able to use the audio capabilities of both your interface and another peripheral that looks to the OS like an interface at the same time and there is no easy way to switch between them other than plugging/unplugging.
-{{tag>loopy_pro troubleshooting}}