how to use capella-scan

How to use capella-scan
capella-scan links to your scanner and when you click the ‘Scan’ option the page (or pages) are scanned into capella-scan. The steps are as follows:

  • Scan in the pages. You can scan as single page and convert it and append future scanned pages later or you can scan in all the pages of the score and convert them as a single task.
  • Click the convert button and every element of the page is converted to recognizable music elements: staves, notes, accidentals, performance instructions and text. Text is automatically recognized as either lyrics which are automatically linked to the appropriate notes or descriptive text ,headings etc. It usually takes 5 to 20 seconds per page.
  • Check the bright green overlaid music. This shows correctly recognised notes where notes aren’t recognized the black score shows through. Correcting for any errors or missed elements is quick and simple. Sometimes elements are recognized as music but are incorrect this is easily spotted because the barline will be red indicating the note values don’t match the time signature. Errors are corrected by dragging and dropping the correct note over the missed note.
Save the recognized score in one of the following ways:
  • Directly to capella in which case capella opens automatically with the score for you to continue working on it
  • To  MusicXML format which can be used in many other notation programs and the text and layout is also transferred
  • To MIDI in which case only the music content is saved.
recognition windowcorrecting errorsusing the output

Understanding the recognition process

You can scan in single pages or a complete score. When you press the ‘Recognize’ button the recognized music elements are shown in bright green. At the top left of the recognized area are thumbnail images of all the pages showing you both how far recognition has got and there is a red frame around the area you are currently viewing. You can go straight to a page by clicking on the thumbnail. You will see on the picture below that each note has a coloured background which identifies the voice it belongs to and that cross stave beamed notes have been correctly recognized. In the last visible bar there is a red barline. This indicates that the bar does not have the requisite value of notes – you will see a missing crotchet rest.

recognition window

the capella-scan recognition window

Editing is quick and straightforward

Missing items are easy to spot as they show as black and misrecognized items located via the red barlines that they cause. Click on the symbol for the missing object. drag it over the missing item and release. It turns pink if it is locked in place.

capella-scan editing window

capella-scan editing window










Using the recognized image

You can do more with capella-scan than provide the input to capella. Although this is capella-scan’s main purpose you can save scores in a format that can be used by most other notation programs and you can listen to scanned scores as an aid to understanding what they sound like and as accompaniment for you to practice alongside. If playing the music back as an accompaniment is important to you, you should consider buying capella playAlong as the playback device as it is specifically designed for this.

Exporting the recognized score to other programs.

When you click on save you have five options.

  1. To save as a capella file.
  2. To save as both a capella file and a MIDI file.
  3. To save as both a capella file and a MusicXML file.
  4. To save as a MIDI file.
  5. To save as MusicXML file.

MusicXML is a widely recognized format used by most major notation programs including Sibelius and Finale. It retains the layout information and the musical information. When a MusicXML file is imported it should look and sound the way it did when created in the exporting program. MIDI on the other hand only keeps the musical information. When a MIDI file is imported the importing program lays it out as it thinks it should look and there will be no textual content such as headings and printed dynamics.

Listening to the recognized score.

capella-scan contains the captune module that is also present in capella. This allows you to select the playback instrument, volume and stereo positioning of each stave or voice. There are many additional features to improve the realism of the playback. Printed dynamics are recognized as are many musical effects such as turns and tremolos.