Before you can get MIDI input or input monitoring to work without a delay, you will need to make some adjustments to SONAR’s audio settings:
1. Go to Edit > Preferences > Audio - Driver Settings.
2. Adjust the Buffer Size slider toward Fast.If you are using ASIO drivers, the Buffer Size slider will be disabled. If this is the case, you will need to adjust your buffer size/latency setting by going to your sound card's proprietary control panel. Click on the ASIO Panel button. This opens your sound card's proprietary control panel. If the ASIO Panel button does not launch your device's control panel, try to open it from the Windows Control Panel or from the Windows Task Bar.Ultimately, the smaller the buffer size, the less amount of latency you will hear. If you can get the buffer size down to 10 milliseconds or less, you will likely not notice a delay. If you experience distortion or audio dropouts, increase your buffer size setting for stability.
3. If you are forced to switch to the MME (32bit) Driver Mode under Edit > Preferences > Audio - Playback and Recording, then you may not be able to achieve ultra-low latency. If this is the case, please visit for additional information.Most high-end cards allow you to change the DMA Buffer Size setting in their proprietary control panel or mixing software.After you lower the buffer size, you must click the Wave Profiler button under Edit > Preferences > Audio - Driver Settings for the changes to take effect.
Note: The Wave Profiler button is not available when using ASIO drivers.
1. If your device has ASIO drivers, go to Edit > Preferences > Audio - Playback and Recording and change Driver Mode to ASIO.
2. Go to Edit > Preferences > Audio - Driver Settings and click on the ASIO Panel button. This opens your sound card's proprietary control panel. If the ASIO Panel button does not launch your device's control panel, try to open it from the Windows Control Panel or from the Windows Task Bar.Internal sound cards are typically designed for general media playback and not necessarily optimized for recording, so your internal sound card may not be able to perform at low latency settings.
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