1 Select the audio material you want to use as a pitch reference. Click the preview button to begin playback of the selected audio.2 Click the Reference Pitch button to activate the reference sine wave tone.3 Adjust the Note and Detune settings to match the reference tone to the pitch of the audio playback. Adjust the Gain setting to change the relative volume of the reference tone. It may also be helpful to toggle the Reference Pitch on and off to compare pitch.5 Adjust the Coarse and Fine Pitch Shift controls to match the pitch of the audio playback to the reference pitch.