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Topic: EAC -Write samples offset (Read 3943 times) previous topic - next topic
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EAC -Write samples offset

I have been having some problems with Eac drive - writer options.

Firstly I would like to outline the procedure that I did.

Firstly I ripped a retail CD with eac. Then I burnt it with EAC and then I ripped this burnt CD.
Then I chose compare Wav's and I firstly selected rip from retail cd and then I selected rip from my burnt CD.
Eac then wrote: 6 repeated samples. 
Then I set +6 under writer options.
But when I tried the thing all over again with other cds compare wavs wrote 12 repeated samples.
Then I set to +12.
I tried the thing all over again with the same cds and compare wavs gave 18 repeated samples.

The point is that I can't set up write samples offset, because EAC always gave me other repeated samples number.
What should I do?
Is this, because when I am ripping, I always set gaps?

EAC -Write samples offset

Reply #1 –
Try -6
Compare WAVs should show the repeated samples on the left (under the original CD rip) or on the right (under the burnt CD rip). If I remember correctly you set the write offset to negative if on the left and positive if on the right. Someone will correct me if I'm wrong.

EDIT: Tested with current version of EAC on my drive (which needs -6 write offset correction). Shows 6 repeated samples on left with write offset set to 0. If I reverse the WAV order (to simulate that a +6 write offset was needed) the 6 repeated samples show up on the right.
korth

EAC -Write samples offset

Reply #2 –
Thank you. It works. I had to set to -6.

Just one question.
Does this setting (-6) also impact other software on my pc, e.g. Nero or is this setting just used by EAC?
I'm asking you this, because it says that if one changes a firmware of his drive, he will need to set this offset thing again.
So I wonder, if this setting impact drive directly in all programs.

EAC -Write samples offset

Reply #3 –
EAC only. It is just a software setting.

From the EAC FAQ
Quote
Is the read offset (or the write) offset drive model dependent, or is it possible that the same drive has a different offset in a different system?[blockquote]The offsets should be the same for all drives of that specific model. Though, it is possible (but not probable) that the offset varies with different firmwares.[/blockquote]
korth

EAC -Write samples offset

Reply #4 –
You really understand this things.
Thank you some much for this.

EAC -Write samples offset

Reply #5 –
The reason things worked as they did above was due to our leaving the read offset set to +6 when ripping the burned CD copy.
The procedure is more commonly done by finding the combined read/write offset then subtracting the read offset from that to find the write offset.
You would rip the original CD first to WAV with the correct read offset. Then you would set both the read offset* and write offset in EAC to zero. Then burn the WAV to CD with EAC and rip that CD to WAV. Compare the original CD rip WAV to the burned CD rip WAV and in our case the WAVs would match making the combined read/write offset zero. So using the formula combined read/write offset - the read offset = the write offset we get 0 - +6 = -6. You would then set the read offset back to +6* and write offset to -6.

* If 'Use AccurateRip' is enabled you'll need to disable temporarily until finished.
korth