The accuracy of SmartMusic's assessment can be affected by the quality of the recording. Much of that quality is determined by the microphone being used for the recording. The built-in microphones for many computers, particularly Chromebooks, are usually designed for the spoken voice rather than the frequency range of instruments and the sung voice. This can potentially lead to poor recording quality. That being said, there are several steps to take in order set up SmartMusic for accurate assessment.
Start by finding a quiet space to record. If there is a lot of noise in the background the additional input can confuse the assessment in SmartMusic.
Make sure to leave some space between your instrument and the microphone. Start about an arm's length away. This will help prevent any overtones from interfering with the assessment.
Before recording any title, SmartMusic will ask you to calibrate your microphone.
If you run into issues during this process check out Troubleshooting recording and playback issues for assistance. If you are working on a Windows computer, you may need to adjust the input level. See Troubleshooting Windows microphone issues.
Once the microphone is calibrated, plug in a pair of headphones. This allows you to listen to the accompaniment without the microphone picking up that input. This is especially important when working on an iPad where the speakers and microphone are next to each other.
Using this set up SmartMusic should work with many built-in microphones. However, if you run into recording quality issues after following these instructions, using an external microphone may improve the results.