Topic: Sound Devices MixPre-3 and 6, Part 7

[hipporu]

A few days ago I discovered that in the remix mode my mp3 does not work ms decode,
it just overwrites iso tracks 1 and 2 to channels L and R  as is.
firmware v8
Not that it was often needed, but nevertheless, when it was needed, it did not work.

[GLouie]

A few days ago I discovered that in the remix mode my mp3 does not work ms decode,
it just overwrites iso tracks 1 and 2 to channels L and R  as is.
firmware v8
Not that it was often needed, but nevertheless, when it was needed, it did not work.

Did you report it to Sound Devices support? I have an open support ticket about Remix not working right when L/R mix tracks were not recorded (MixPre10ii), which they confirmed. Maybe if they are working on Remix, they might be interested.

[hipporu]

Did you report it to Sound Devices support? I have an open support ticket about Remix not working right when L/R mix tracks were not recorded (MixPre10ii), which they confirmed. Maybe if they are working on Remix, they might be interested.

Yes, I reported SD through their website.
They still have the night.
I will give the knowledge, when they answer.
I hope SD can fix it quickly.

upd
Answered
For your question on the MixPre-3 II, it is true that remixing the MS setting recorded to a channel is currently unavailable.
I can request this feature for a future firmware update for the MixPre II series.

[GLouie]

Funny, to read the manual and look at their video, you would think Remix works on anything easy-peasy. We are finding out differently. I never tried M-S remixing, but suggested to them they simply say Remix is only good when L-R Mix is recorded.

I don't know how difficult a fix this might be, or their priorities on software, but they did need a couple of months to fix the pre-roll time count offset.

Did you report it to Sound Devices support? I have an open support ticket about Remix not working right when L/R mix tracks were not recorded (MixPre10ii), which they confirmed. Maybe if they are working on Remix, they might be interested.

Yes, I reported SD through their website.
They still have the night.
I will give the knowledge, when they answer.
I hope SD can fix it quickly.

upd
Answered
For your question on the MixPre-3 II, it is true that remixing the MS setting recorded to a channel is currently unavailable.
I can request this feature for a future firmware update for the MixPre II series.

[Gordon]

I recorded a file the other night at 32/48 and noticed a +682db momentary signal come through at the very beginning of the track, left side. Has anyone else had this happen? It was causing my waveform stats read at '+inf' and I couldn't for the life of me figure it out until I looked into the waveform at the top of the RX7 window. It's not a big deal right now as it could just cut it but if it happened during a set, that would be another story.

Here's a screenshot: https://i.imgur.com/AzMjp0Z.png

Edit: once zoomed in, it actually looks like it occurs in both channels.

Pic: https://i.imgur.com/ZgfWT40.png

I've had that happen plenty of times but always at the very end of the file.  NEVER has happened to me at the beginning or middle.  Never researched why because it causes no harm. 

[commongrounder]

I recorded a file the other night at 32/48 and noticed a +682db momentary signal come through at the very beginning of the track, left side. Has anyone else had this happen? It was causing my waveform stats read at '+inf' and I couldn't for the life of me figure it out until I looked into the waveform at the top of the RX7 window. It's not a big deal right now as it could just cut it but if it happened during a set, that would be another story.

Here's a screenshot: https://i.imgur.com/AzMjp0Z.png

Edit: once zoomed in, it actually looks like it occurs in both channels.

Pic: https://i.imgur.com/ZgfWT40.png

I've had that happen plenty of times but always at the very end of the file.  NEVER has happened to me at the beginning or middle.  Never researched why because it causes no harm.

I’m curious which version of the firmware is installed on the recorder? There was a known issue with a single sample glitch appearing at just the *beginning only* of a 32-bit float recording, which was fixed in a later version. I had it happen a few times on my unit, and the problem disappeared after updating. I haven’t personally experienced, or heard of before, glitching at other locations in an audio file.

[Gordon]

I'm on v8 now but it's happened randomly over various firmware.

edit: in my case I'm not convinced it's not a glitch in iZotope.  If I cut off the spike at the end another appears.  I have to fade it out to be able to get an accurate gain reading.  I need to go back and find a file that does it and open it in wavelab to check.

[stober]

Set gain to basic and everything else to advanced!

This in custom mode.  Disable l/r mix (settings > record > record l/r off).  I link channels so one knob adjust both (push knob for channel settings).  I record on a 32gb card at 32/48 often 4 channels and have plenty of space.  I'd say each file ends up about 1.5gb per hour when running 2 channels with no l/r, 3gb when running 4.  If running 96 then more than double that.

I forgot to disable L/R tracks and now my wave file are double the size and has both the L,R and channel one and two tracks combined in this wave file. is there a way to delete the L,R mix and just have the 2 channel recording or Im i screwed?

[GLouie]

Probably as many ways to do this as there are people - but is it 32 bit float? Then Wave Agent is out.

[stober]

no 24 bit

[DavidPuddy]

no 24 bit

Open it in audacity and delete one of the stereo pairs. It shouldn’t matter which one since you only had two channels to begin with.

[jbell]

What software are you using?  Easiest solution is to use wave agent to split them since they are 24bit files. When recording in 32 bit you will need another solution. You might be able to use your DAW depending on what you use.

Set gain to basic and everything else to advanced!

This in custom mode.  Disable l/r mix (settings > record > record l/r off).  I link channels so one knob adjust both (push knob for channel settings).  I record on a 32gb card at 32/48 often 4 channels and have plenty of space.  I'd say each file ends up about 1.5gb per hour when running 2 channels with no l/r, 3gb when running 4.  If running 96 then more than double that.

I forgot to disable L/R tracks and now my wave file are double the size and has both the L,R and channel one and two tracks combined in this wave file. is there a way to delete the L,R mix and just have the 2 channel recording or Im i screwed?

[hipporu]

You can use the remix function of the recorder itself, you will get the file only LR channel.
Sometimes I use this when I need to quickly give a scratch track to a client.
While I am returning home, the recorder is re-recording two tracks and all I have to do is transfer them to the customer.

[stober]

no 24 bit

Open it in audacity and delete one of the stereo pairs. It shouldn’t matter which one since you only had two channels to begin with.

I tried this last night in Audacity and it only gave me the option of exporting it as a mono file when I deleted the left and right recording.  I usually use wavelab elements 9.5 for editing but it wouldn’t even open the recording originally.( did not recognize the format). Audacity would open it and so did sound studio but sound studio wouldn’t let me do much of anything besides giving me the option to combine it to a two channel stereo recording. I don’t have wave agent maybe I’ll try that.

[GLouie]

Wave Agent is free, so may as well have it. WA identifies 1-2 as the L-R mix and 3-4 as your isos. Split your polywave into 4 separate files. I'd then use your favorite DAW program to recombine 3-4 into a stereo polywav (not sure, but think Wave Agent can do this, too, with Combine. Never tried!)