[OSM-talk] Audio sync with JOSM

[David Janda]

 Ah, now I see.

I do think that sync via creation date would be a good idea, and in my case
where I make multiple recordings it would be marvellous.

But like you said, even with a smartphone, they *could* be using different
clocks, but a feature still worth implementing.

Once a user is aware that the onus is down to them to ensure the device
clock is correct, then drift will be down to them, and with network time
updates this *should* not be a real problem.

David Janda
djanda

-----Original Message-----
From: David Earl [mailto:david at frankieandshadow.com] 
Sent: 07 April 2008 15:40
To: dj at dotcomdave.com
Cc: talk at openstreetmap.org
Subject: Re: [OSM-talk] Audio sync with JOSM

On 07/04/2008 15:22, David Earl wrote:
>> If so, given that many GPS enabled smartphones etc. have recording 
>> capabilities, and therefore share the same clock, would it be 
>> possible to make this a feature request?

I didn't reply to this bit, sorry.

Yes, this would be possible.

I think you'll find they don't use the same clock though - the GPS clock has
to be much more accurate and is run off the atomic clocks in the satellite
while the audio clock (set in the phone) is probably set by you on the phone
settings, and will probably drift apart over time.

It is always possible that the track recorder will use the device clock not
the GPS clock to record its waypoints, in which case they will be in sync of
course.

David