Changes between Version 6 and Version 7 of Help/AudioMapping/GPSWaypoints


Ignore:
Timestamp:
2008-03-02T16:39:04+01:00 (18 years ago)
Author:
David Earl <david@…>
Comment:

revise for updated interface

Legend:

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  • Help/AudioMapping/GPSWaypoints

    v6 v7  
    11= Audio Mapping: Continuous audio with GPS waymarks =
    22
    3 This method of audio mapping uses waypoints collected using your GPS to identify the position of a feature and a continuous audio recording to take notes. Synchronization and calibration of the sound track provide a convenient means to play back the notes for each waypoint, but aren't critical to the geography of the map.
     3This method of audio mapping uses waypoints collected using your GPS
     4to identify the position of a feature and a continuous audio recording
     5to take notes. Synchronization and calibration of the sound track
     6provide a convenient means to play back the notes for each waypoint,
     7but aren't critical to the geography of the map.
    48
    59== Procedure: ==
    … …  
    2731    * 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.
    2832
    29  2. [wiki:Help/Action/Open Open] your GPX file. This will create (a) a GPX layer showing the track and (b) a Marker layer containing the waypoints.
    30     * 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].
    31     * 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.
     33 2. [wiki:Help/Action/Open Open] your GPX file. This will create a GPX layer showing the track.
     34    * if you have explicit waypoints in your GPX file you will also probably see a Marker Layer for those waypoints. You will most likely want to turn this behaviour off by un-checking 'Create non-audio markers when reading GPX' in [wiki:Help/Preferences/Audio Audio Preferences].
    3235
    33  3. Associate your Audio file with the Marker Layer using [wiki:Help/Action/ApplyAudio Apply Audio] on the layer's context menu.
     36 3. Import your audio file using [wiki:Help/Action/ImportAudio Import Audio] on the GPX layer's context menu. After you identify your WAV file you should see a Marker Layer with audio markers for your waypoints.
     37    * if you only see one markers at the start:
     38      (a) you may have turned off 'Import audio uses expolicit waypoints' in [wiki:Help/Preferences/Audio Audio Preferences].
     39      (b) it is possible your GPS represents your marks by giving names/numbers to particular points on the track rather than separate waypoints. JOSM will recognize these while importing audio if you turn on the 'Create markers from named trackpoints' option in [wiki:Help/Preferences/Audio Audio Preferences].
    3440    * 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.
    3541
    36  4. Synchronize your sound track to the GPS data:
    37     a. Play your sound track by clicking the icon for the waypoint you made at the synchronization cue.
    38        * 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.
    39     b. When you hear your synchronization cue ("NOW!"), [wiki:Help/Action/PlayPause pause] the play back.
    40        * 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.
    41     c. Select [wiki:Help/Action/SynchronizeAudio Synchronize Audio] on the context menu for the Marker Layer.
    42     * 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.
     42 4. [wiki:Help/AudioMapping/Synchronization Synchronize] your sound track to the GPS data. There are [wiki:Help/AudioMapping/Synchronization two ways] of doing this.
    4343
    4444 5. Play each Marker and create the streets and features you described at the locations indicated by the Marker, in the usual way.
    … …  
    4848      c. you may need to re-synchronize (as per 4 above) on a later marker (perhaps you paused while making the recording). Re-synchronization only affects later markers, so earlier ones will not change.
    4949
     50You can also use the [wiki:Help/Menu/Audio audio controls] to pause, play back etc. and you
     51can drag the orange play head marker around to jump to a particular
     52point in the recording.
     53
    5054Back to [wiki:Help/HowTo/AudioMapping Audio Mapping]
    5155