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1Clear out junk files and repair common Windows errors2Fix the driver behind crashes, sound loss and screen glitches3Repair Windows errors before they cause bigger problemsAudacity records sound, not MIDI. To capture a digital piano in Audacity, you need an audio path from the instrument into your computer: either a USB connection that your piano’s manual confirms carries audio, or an analog audio output (headphone, line-out, or another audio out) feeding a suitable computer input or USB audio interface. Select that input in Audacity, set a sensible recording level, record, and save a copy of the raw file before you edit anything.
Why a USB cable often doesn’t work
Many digital pianos and electronic keyboards have a USB port, and it is the first thing most people try. On many instruments, however, that port sends MIDI instructions (note on, note off, velocity, pedal data) rather than sound. Audacity’s own FAQ explains the problem directly: “Audacity cannot yet accept MIDI input, so it can only record an audio signal (the actual sound that the keyboard produces).” If the keyboard sends only MIDI over USB, Audacity has nothing to record, and the track stays silent no matter how you set the input.
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The fix is to check the manual, not to guess. Look in the connectivity or specifications section for wording such as “USB Audio” or “USB audio interface.” If the manual doesn’t mention audio over USB, treat the port as MIDI-only and use an analog output instead.
Choose the right connection path
Four routes cover nearly every setup. Compare them by whether the piano’s output carries audio, whether your computer or interface accepts line-level signal, whether you need mono or stereo, and which cable or connector you need.
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| Connection path | When it fits | Tradeoff or check |
|---|---|---|
| Keyboard USB audio | The piano manual says the USB port carries audio | Some keyboards send MIDI only over USB. Audacity cannot record that MIDI data. |
| Piano audio out to computer line input | Your computer has a true line-in jack | Match the cable and connectors. A mono microphone jack is not the same as a line input. |
| Piano audio out to USB audio interface | Your computer has no suitable line input | The interface needs line-level inputs and a cable that matches the piano’s outputs. Connector types depend on your model. |
| Microphone recording | No workable direct output connection | Captures the room as well as the instrument. It is a different recording method, and the Audacity documentation lists it as an alternative rather than a direct feed. |
No piano model, computer, or operating system is assumed here, so there is no universal cable or adapter to recommend. Identify your piano’s output jacks and your computer’s input jacks first, then pick the cable.
Step-by-step setup
- Read the piano’s ports and manual. Confirm whether USB carries audio. If it does, connect it and continue to step 3. If it does not, use a headphone, line, or other audio output in step 2.
- Connect the output to a suitable input. Use a line input on the computer if one exists, with the correct cable. If the computer has no line input, connect the piano to a USB audio interface that has line-level inputs. Do not plug a line-level keyboard output into a mono microphone jack and expect a clean result.
- Select the device in Audacity. Open the Audio Setup toolbar, or open Preferences and choose the audio device settings page. Set the recording device to the input you connected. On Windows and Linux, Preferences is under Edit; on macOS it is under Audacity.
- Choose the channel count. If the piano has stereo outputs, select two-channel stereo recording. Stereo is covered in the next section.
- Check the signal and set the level. Play the loudest passage you expect, watch the Recording Meter, and adjust the input level so peaks approach but do not exceed the target described below. Turn on input monitoring if you want to hear the signal while recording and your setup supports it.
- Record, stop, and export a safety copy. Make the take, stop, and export a WAV or AIFF file before editing the Audacity project (see the section on saving a safety copy).
Set the recording level
Audacity’s Recording documentation suggests aiming for a maximum peak of about −6 dB. The page gives the linear equivalent for readers who set their meters to linear rather than decibels: 0.5. This is a practical headroom target for the recording, not a universal standard, so adjust it if your piano or interface behaves differently. Peaks that touch 0 dB leave no headroom, and a loud chord can clip into distortion that cannot be removed later.
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Record in stereo or mono
Audacity’s device-selection guidance says that if the keyboard has stereo outputs, you should record in stereo. A stereo piano feed recorded as mono often sounds narrower and can leave one channel silent. If you see only one channel in the track, check both the piano’s outputs and the Audacity channel setting before you record again.
Save a safety copy before you edit
Once a take is done, export it as a WAV or AIFF file right away, before trimming, effects, or other edits. Audacity’s project format keeps your work editable, but the exported WAV or AIFF is a stable copy of the raw recording. If an edit goes wrong or a project file becomes unusable, you can start again from that copy.
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Troubleshooting
- No sound from USB. The keyboard is probably sending MIDI only. Confirm in the manual, then switch to an audio output.
- The input is missing from Audacity. Check that the operating system sees the device first. If you plugged it in after Audacity opened, restart Audacity or choose Transport > Rescan Audio Devices.
- Distorted or crackling recording. Check whether the computer’s input is a mono microphone jack. Move to a line input or a line-level USB audio interface if needed, and lower the input level.
- Only one channel is recorded. Confirm the piano has stereo outputs and that Audacity is set to record two channels.
- Silent monitoring. Audacity can monitor the input audibly, and some interfaces offer direct monitoring. Some keyboards mute their speakers when headphones are plugged in, so check that too.
What you may need to buy
Most readers need either nothing extra or one of two items. If your piano’s USB carries audio, or your computer already has a suitable line input and you have a matching cable, you may not need anything beyond that cable. If your computer lacks a line input, a USB audio interface with line-level inputs is the usual solution. Choose it by checking its inputs against your piano’s outputs, not by brand name alone.
The Audacity documentation supports these connection types, but it does not certify any particular interface or cable for any particular piano, so confirm compatibility with the product documentation before you buy.
Quick Recap
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