Old 01-27-2012, 01:44 AM
zapbran zapbran is offline
Junior Member
Join Date: Jan 2012
Posts: 3
Default DIY audio filters

Hello all, I use my J3 with ATH-M50s, a PIMETAv2 and a Meier crossfeed circuit and I love the effect of the latter. Since tweaking the hardware components for optimum settings is a pain i.t.a. I wondered if it is possible to do the crossfeed in software.

From reading some posts I figure UCIs are far from the solution and the equalizer is hardware. This leaves me with the JetEffects (are these software? can they be altered/extended?) or an open firmware like rockbox, which I have used on a Sansa but never looked at in detail so I don't know how to code something so it can be used with rockbox.

Is there any way to get access to the digital audio before it is converted to the analog output signal?

Reply With Quote

Advertisement [Remove Advertisement]

Old 01-27-2012, 03:52 AM
Kizune's Avatar
Kizune Kizune is offline
Join Date: Nov 2010
Location: Germany
Posts: 192

Nope, that's impossible (both altering the firmware and using a custom firmware).
Reply With Quote

Old 01-27-2012, 04:24 AM
zapbran zapbran is offline
Junior Member
Join Date: Jan 2012
Posts: 3

That's the one answer I didn't expect But thanks for saving me time investigating this further.

Just out of curiosity: How does JetEffects do it and why can't I exactly?
Reply With Quote

Old 01-27-2012, 04:38 AM
TackyTiger's Avatar
TackyTiger TackyTiger is offline
Join Date: Mar 2009
Location: Airstrip One
Posts: 165

I seem to remember hearing the J3 is very similar to the S9.

If this is the case, when the S9 was my main player, I did some tests on the "Stereo Enhance" effect and found it was actually more of a crossfeed.

Worth a try, it might sound something like what you're after...

Here's the thread;

Edit: BTW, if you decide to go the Sansa/ Rockbox route, there's already a Meier crossfeed patch that dfkt includes in his builds...

Last edited by TackyTiger; 01-27-2012 at 04:44 AM.
Reply With Quote

Old 01-27-2012, 07:39 AM
zapbran zapbran is offline
Junior Member
Join Date: Jan 2012
Posts: 3

Oh awesome. I always keep away from those settings, but the stereo enhance really kinda does the crossfeed trick, although it alters the sound quite a bit. But that's where the eq and RMAA come into play, let's see if it can be corrected
Reply With Quote


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

All times are GMT -5. The time now is 10:39 PM.