Changes between Version 4 and Version 5 of Help/AudioMapping/GPSWaypoints


Ignore:
Timestamp:
2008-02-26T16:20:47+01:00 (18 years ago)
Author:
David Earl <david@…>
Comment:

small changes to match technique 2

Legend:

Unmodified
Added
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Modified

  • Help/AudioMapping/GPSWaypoints

    v4 v5  
    1212
    1313 1. Start your voice recorder and obtain a fix with your GPS.
     14    * It is just a little easier to synchronize if you start the voice recorder first.
    1415 
    1516 2. One you have a fix, you might want to start moving just to make sure your location is clear.
    … …  
    2425
    2526 1. Extract your tracks from the GPS as a GPX file, and your sound track from the recorder as a WAV file.
     27    * JOSM (actually, Java's built-in audio facilities) doesn't recognise every variety of WAV file encodings. If you need to (JOSM will tell you), convert your recording to a suitable format using e.g. [http://audacity.sourceforge.net/ Audacity]. 8,000 16-bit samples per second is a reasonable format.
    2628
    27  2. JOSM (actually, Java's built-in audio facilities) doesn't recognise every variety of WAV file encodings. If you need to (JOSM will tell you), convert your recording to a suitable format using e.g. [http://audacity.sourceforge.net/ Audacity]. 8,000 16-bit samples per second is a reasonable format.
    28 
    29  3. Open your GPX file. This will create (a) a GPX layer showing the track and (b) a Marker layer containing the waypoints.
     29 2. Open your GPX file. This will create (a) a GPX layer showing the track and (b) a Marker layer containing the waypoints.
    3030    * if you don't see Markers, it is possible your GPS represents these by giving names/numbers to particular points on the track rather than separate waypoints. You can make Markers from these explicitly using [wiki:Help/Action/MarkersFromNamedPoints Markers From Named Points] from the context menu of the GPX layer; and automatically by turning on the 'Create markers from named trackpoints' option in [wiki:Help/Preferences/Audio Audio Preferences].
    3131    * if you don't see your number or names with the Markers, check that [wiki:Help/Action/ShowHideTextIcons Show/Hide Text/Icons] on the context menu for the Marker Layer is not off.
    3232
    33  4. Associate your Audio file with the Marker Layer using [wiki:Help/Action/ApplyAudio Apply Audio] on the layer's context menu.
     33 3. Associate your Audio file with the Marker Layer using [wiki:Help/Action/ApplyAudio Apply Audio] on the layer's context menu.
    3434    * If you don't see your names or numbers along with he Audio Marker icons, check that the 'Label audio markers' option in [wiki:Help/Preferences/Audio Audio Preferences] is on.
    3535
    36  5. Start synchronizing your sound track to the GPS data by clicking the icon for the waypoint you made at the synchronization cue. This should start playing your sound track.
     36 4. Start synchronizing your sound track to the GPS data by clicking the icon for the waypoint you made at the synchronization cue. This should start playing your sound track.
    3737    * if you don't see an orange play head arrow moving along the track while you play audio, make sure the 'Display live audio trace' option in [wiki:Help/Preferences/Audio Audio Preferences] is on.
    3838
    39  6. When you hear your synchronization cue ("NOW!"), [wiki:Help/Action/PlayPause pause] the play back.
     39 5. When you hear your synchronization cue ("NOW!"), [wiki:Help/Action/PlayPause pause] the play back.
    4040    * if you started the recorder <em>after</em> getting a GPS fix, you will need to [wiki:Help/Action/Back jump backwards] in the sound track. Don't click on an earlier marker, if any, to do this, as that would synchronize to the wrong marker.
    4141
    42  7. Select [wiki:Help/Action/SynchronizeAudio Synchronize Audio] on the context menu for the Marker Layer.
     42 6. Select [wiki:Help/Action/SynchronizeAudio Synchronize Audio] on the context menu for the Marker Layer.
    4343    * The play head should jump back to the marker, and when you play the marker you should hear your "NOW!" cue. Clicking on other markers should offer the audio you recorded when you made that marker.
    4444
    45  8. Play each Marker and create the streets and features you described at the locations indicated by the Marker, in the usual way.
     45 7. Play each Marker and create the streets and features you described at the locations indicated by the Marker, in the usual way.
    4646    * If you start finding gaps in play back before you hear what you expect, or audio starts part way into your comment:
    4747      a. you may not have [wiki:Help/HowTo/AudioMapping/Calibration calibrated] correctly
    4848      b. you may have been speaking too soon or too late while mapping: you can insert a lead-in time to compensate for this using 'Lead-in time' in [wiki:Help/Preferences/Audio Audio Preferences].
    49       c. you may need to re-synchronize (as per 5ff above) on a later marker (perhaps you paused while making the recording). Re-synchronization only affects later markers, so earlier ones will not change.
     49      c. you may need to re-synchronize (as per 4ff above) on a later marker (perhaps you paused while making the recording). Re-synchronization only affects later markers, so earlier ones will not change.
    5050
    5151Back to [wiki:Help/HowTo/AudioMapping Audio Mapping]