Changes between Version 5 and Version 6 of Help/AudioMapping/VocalWaypoints
- Timestamp:
- 2008-03-02T17:10:47+01:00 (17 years ago)
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Help/AudioMapping/VocalWaypoints
v5 v6 12 12 13 13 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.15 14 16 15 2. One you have a fix, start moving. … … 28 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. 29 28 30 2. [wiki:Help/Action/Open Open] your GPX file. This will create a GPX layer showing the track 29 2. [wiki:Help/Action/Open Open] your GPX file. This will create a GPX layer showing the track. 31 30 32 3. [wiki:Help/Action/ MakeSampledAudioLayer Make Sampled Audio Layer] using the context menu (right mouse button) for the GPX layer. This then asks for your WAV file. It should produce Marker Layer containing a series of markers at convenient intervals along the track,labelledaccording to the time into the track.31 3. [wiki:Help/Action/ImportAudio Import Audio] using the context menu (right mouse button) for the GPX layer. This then asks for your WAV file. It should produce Marker Layer containing a single audio marker labelled 'start'. 33 32 * if you don't see labels with the Markers, check that [wiki:Help/Action/ShowHideTextIcons Show/Hide Text/Icons] on the context menu for the Marker Layer is not off. 34 * if the markers are too dense or too far apart, you can vary the sampling rate using the two 'Min audio marker sample rate' options [wiki:Help/Preferences/Audio Audio Preferences]. By default they are at least 75 metres and 15 seconds apart.35 33 36 4. Locate your synchronization point near the beginning of the track. Unless you are very lucky, there won't be a Marker exactly at that point, so you need to add one: 37 a. Play the audio by clicking on the marker immediately before the synchronization point, ignoring what it is saying. When the orange play head arrow reaches the synchronization location, [wiki:Help/Action/PlayPause pause the Audio]. 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. [wiki:Help/Action/MakeAudioMarkerAtPlayHead Make Audio Marker At Play Head] using the context menu (right mouse button) of the Marker Layer to add the extra point. 34 4. [wiki:Help/AudioMapping/Synchronization Synchronize] your sound track to the GPS data. Though there are two ways of doing this, for this kind of audio mapping finding your synchronization cue on the sound recording first will be the easiest method. 40 35 41 5. Synchronize your sound track to the GPS data: 42 a. Play the audio from the synchronization point by clicking the icon you just added. 43 b. When you hear your synchronization cue ("NOW!"), [wiki:Help/Action/PlayPause pause] the play back. 44 * if you started the recorder after 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 to do this, as that would synchronize to the wrong marker. 45 c. Select [wiki:Help/Action/SynchronizeAudio Synchronize Audio] on the context menu for the Marker Layer. 46 * 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 play the audio for that point along the track. 47 48 6. Make the map using your commentary. You may find it convenient to use the automatically generated markers to jump in to your sound track, or instead to use the [wiki:Help/Action/Forward jump forward], [wiki:Help/Action/FastForward fast forward] and [wiki:Help/Action/SlowForward slow forward] audio controls to work your way through the sound track. Either way, when you hear your "MARK!" cues, pause the recording, and the play head will indicate the corresponding location and therefore where to add your feature to the map. 36 5. Make the map using your commentary. You will want to drag the orange play head arrow around track, use the [wiki:Help/Action/Forward jump forward], [wiki:Help/Action/FastForward fast forward] and [wiki:Help/Action/SlowForward slow forward] audio controls to work your way through the sound track. Either way, when you hear your "MARK!" cues, pause the recording, and the play head will indicate the corresponding location and therefore where to add your feature to the map. 49 37 * If you aren't using the markers much, and they are in the way, you can turn them off (once you have synchronized) using [wiki:Help/Action/ShowHideTextIcons Show/Hide Text/Icons] on the context menu (right mouse button) on the Marker Layer; the play head will remain visible. 50 38 * If you start finding play back isn't happening where you expect: 51 39 a. you may not have [wiki:Help/HowTo/AudioMapping/Calibration calibrated] correctly 52 40 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]. 53 c. you may need to re-synchronize (as per 5ff above) at a later point (perhaps you paused while making the recording). Re-synchronization only affects later markers, so earlier ones will not change. 41 c. you may need to re-synchronize at a later point (perhaps you paused while making the recording). Re-synchronization only affects later markers, so the earlier portion will not change. 42 43 6. You may find it convenient to add additional audio markers along the track to give you a 'polay' button directly at that location. To do this [wiki:Help/Action/MakeAudioMarkerAtPlayHead Make Audio Marker At Play Head] on the Marker Layer's context (right mouse button) menu. 54 44 55 45 Back to [wiki:Help/HowTo/AudioMapping Audio Mapping]
