Now, add spectrogram layers to the panes for the two recordings. When you switch from one to the other, you should find that the change happens at the correct point in the recording that you are switching to. You will now hear only one of the recordings, and you can change which one is being played by clicking on one of the panes. After the alignment has finished, press Play/Pause again. Although the plugin only works on pairs of recordings, Sonic Visualiser can align more than two recordings by aligning them all against a single reference (which is always the recording contained in the file that was loaded first). Provided the recordings are indeed similar in qualities other than timing, this is likely to produce a sensible tempo alignment between them. This plugin analyses two recordings to find an alignment path, which associates each moment in one file with a certain moment in the other, so that 1) the alignment preserves temporal order of these moments, and 2) the overall timbral similarity between matched moments is maximized in some way. Sonic Visualiser is now running the MATCH audio alignment Vamp plugin. A progress bar is displayed at the bottom-left corner of the lower pane. 2/5ģ Click the Align button to start alignment. Click the play/pause button and hear how fearful the two recordings sound in mis-synchrony, as no alignment has yet been performed between the two. The two files are displayed in the main window simultaneously, as pictured below. Select Load this file into a new waveform pane and click OK. 1/5Ģ Use File Open Location to load each of the files in turn from the URLs given above: Upon loading the second file a prompt window is displayed, as shown on the right. If it is visible, then the MATCH plugin is properly installed. The main window appears like this: First check that the align button is visible in the toolbar. Marian Anderson, accompanied by Kosti Vehanen HMV DA 1550, OLA Karin Branzell, accompanied by Frieder Weissmann Parlophone E 10744, (from Parlophon P-9817) Tutorial Start Sonic Visualiser. The audio files you will use are two recordings of Der Tod und das Mädchen by Franz Schubert provided by the Kings Sound Archive. Introduction In this short tutorial, you will load two audio files that contain different recordings of the same piece of music from a Web site into Sonic Visualiser, and align them so that you can compare them in terms of tempo and timing.

Get it from and follow the installation instructions on that page. 1 Audio Alignment with Sonic Visualiser and the MATCH Vamp Plugin Requirements You will need: Sonic Visualiser.

Sonic visualiser tutorial