Changes between Version 12 and Version 13 of Help/AudioMapping/GPSWaypoints
- Timestamp:
- 2025-01-13T18:07:44+01:00 (3 months ago)
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Help/AudioMapping/GPSWaypoints
v12 v13 12 12 === Before you start === 13 13 14 1. Consider [wiki:/Help/AudioMapping/Calibration calibrating] your voice recorder. 14 1. Consider [wikitr:/Help/AudioMapping/Calibration calibrating] your voice recorder. 15 15 16 16 === While surveying === … … 32 32 33 33 1. Extract your tracks from the GPS as a GPX file, and your sound track from the recorder as a WAV file. 34 * 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. 34 * 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. [https://audacity.sourceforge.net/ Audacity]. 8,000 16-bit samples per second is a reasonable format. 35 35 36 2. [wiki:/Help/Action/Open Open] your GPX file. This will create a GPX layer showing the track. 37 * 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].36 2. [wikitr:/Help/Action/Open Open] your GPX file. This will create a GPX layer showing the track. 37 * 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 [wikitr:/Help/Preferences/Audio Audio Preferences]. 38 38 39 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. 40 * if you don't see the markers you expect, for example you get only one called 'start', you may need to change what markers are created in the 'When importing audio, make markers from...' section in [wiki :Help/Preferences/Audio Audio Preferences]:39 3. Import your audio file using [wikitr:/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. 40 * if you don't see the markers you expect, for example you get only one called 'start', you may need to change what markers are created in the 'When importing audio, make markers from...' section in [wikitr:/Help/Preferences/Audio Audio Preferences]: 41 41 a. you may have 'Explicit waypoints with valid timestamps' turned off. 42 42 b. your waypoints may not have timestamps or they may be stamped only with the date, not the time, in which case choose the estimated time option rather than the explicit waypoint option. (Garmin devices typically don't usefully timestamp waypoints). 43 43 c. 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 'Named trackpoints' option. 44 * If you don't see your names or numbers along with the Audio Marker icons, check that the 'Label audio markers' option in [wiki :Help/Preferences/Audio Audio Preferences] is on.44 * If you don't see your names or numbers along with the Audio Marker icons, check that the 'Label audio markers' option in [wikitr:/Help/Preferences/Audio Audio Preferences] is on. 45 45 46 4. [wiki:/Help/AudioMapping/Synchronization Synchronize] your sound track to the GPS data. There are [wiki :Help/AudioMapping/Synchronization two ways] of doing this.46 4. [wikitr:/Help/AudioMapping/Synchronization Synchronize] your sound track to the GPS data. There are [wikitr:/Help/AudioMapping/Synchronization two ways] of doing this. 47 47 48 48 5. Play each Marker and create the streets and features you described at the locations indicated by the Marker, in the usual way. 49 49 * If you start finding gaps in play back before you hear what you expect, or audio starts part way into your comment: 50 a. you may not have [wiki :Help/AudioMapping/Calibration calibrated] correctly51 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].50 a. you may not have [wikitr:/Help/AudioMapping/Calibration calibrated] correctly 51 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 [wikitr:/Help/Preferences/Audio Audio Preferences]. 52 52 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. 53 53 54 You can also use the [wiki:/Help/Menu/Audio audio controls] to pause, play back etc. and you 54 You can also use the [wikitr:/Help/Menu/Audio audio controls] to pause, play back etc. and you 55 55 can drag the orange play head marker around to jump to a particular 56 56 point in the recording. 57 57 58 58 ---- 59 Back to [wiki:/Help/AudioMapping Audio Mapping] [[Br]]60 Back to [wiki:/Help Main Help] 59 Back to [wikitr:/Help/AudioMapping Audio Mapping] \\ 60 Back to [wikitr:/Help Main Help]
