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#145303 - 24/02/2003 21:04 Re: cut the time uploading to the MK2 in almost ha [Re: genixia]
tfabris
carpal tunnel

Registered: 20/12/1999
Posts: 31563
Loc: Seattle, WA
Bass and Treble could be implemented on the exising DSP
You were too slow today, Grasshopper. We shall try again, tomorrow.

<cue Kung Fu music>
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Tony Fabris

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#145304 - 24/02/2003 21:14 Re: cut the time uploading to the MK2 in almost ha [Re: tfabris]
SE_Sport_Driver
carpal tunnel

Registered: 05/01/2001
Posts: 4903
Loc: Detroit, MI USA
Oops, sorry. I knew that, but didn't write it clearly. I was under the impression that there was some reason it wasn't turned on in the empeg software. I think I read once that with the great EQ we have, the development team thought there was no need for a simple treble and bass adjustment. So, what I meant to say was "Updated DSP (only because Hugo mentioned it) and while you're at it, enable bass and treble adjustment" but that didn't fit into a list format .
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Brad B.

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#145305 - 24/02/2003 21:48 Re: cut the time uploading to the MK2 in almost ha [Re: tfabris]
genixia
Carpal Tunnel

Registered: 08/02/2002
Posts: 3411
That was a very nice humble pie I just ate
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Mk2a 60GB Blue. Serial 030102962 sig.mp3: File Format not Valid.

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#145306 - 24/02/2003 22:09 Re: cut the time uploading to the MK2 in almost ha [Re: SE_Sport_Driver]
mcomb
pooh-bah

Registered: 31/08/1999
Posts: 1649
Loc: San Carlos, CA
Hugo's throwing us a bone

Actually I think Hugo is just taunting us for his own amusement. Of course he is more that welcome to prove me wrong
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EmpMenuX - ext3 filesystem - Empeg iTunes integration

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#145307 - 24/02/2003 22:30 Re: cut the time uploading to the MK2 in almost ha [Re: genixia]
tfabris
carpal tunnel

Registered: 20/12/1999
Posts: 31563
Loc: Seattle, WA
That was a very nice humble pie I just ate
I honor your humility with a new avatar, Grasshopper.
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Tony Fabris

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#145308 - 24/02/2003 22:41 Re: cut the time uploading to the MK2 in almost ha [Re: tfabris]
loren
carpal tunnel

Registered: 23/08/2000
Posts: 3826
Loc: SLC, UT, USA
lol. nice.
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#145309 - 24/02/2003 22:43 Re: cut the time uploading to the MK2 in almost ha [Re: loren]
tfabris
carpal tunnel

Registered: 20/12/1999
Posts: 31563
Loc: Seattle, WA
Thank you. That one took some research.
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Tony Fabris

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#145310 - 25/02/2003 01:12 Re: cut the time uploading to the MK2 in almost ha [Re: tfabris]
Shonky
pooh-bah

Registered: 12/01/2002
Posts: 2009
Loc: Brisbane, Australia
In reply to:

Um, the current DSP has bass and treble, it's just that no one's implemented it in the software yet.




Alright already! I've been meaning to and will definitely start working on it tonight. It's not quite as simple as you would think though. Possibly the loudness control might get a bit munged in the process. Would people be willing to ditch the loudness (or have it work differently, possibly not correctly) in favour of bass and treble?

Not to say I can't.... but I'm kinda covering myself
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Christian
#40104192 120Gb (no longer in my E36 M3, won't fit the E46 M3)

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#145311 - 25/02/2003 07:04 Re: cut the time uploading to the MK2 in almost ha [Re: SE_Sport_Driver]
lopan
old hand

Registered: 28/01/2002
Posts: 970
Loc: Manassas VA
I was just kidding about the gps and color lcd, I'd be happy with a 100base ethernet only

BTW... Love the avatar Tony...
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Brett 60Gb MK2a with Led's

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#145312 - 25/02/2003 08:22 Re: cut the time uploading to the MK2 in almost ha [Re: tfabris]
wfaulk
carpal tunnel

Registered: 25/12/2000
Posts: 16706
Loc: Raleigh, NC US
Wow.

You really have lost a lot of weight!
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Bitt Faulk

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#145313 - 25/02/2003 11:41 Re: cut the time uploading to the MK2 in almost ha [Re: Shonky]
tfabris
carpal tunnel

Registered: 20/12/1999
Posts: 31563
Loc: Seattle, WA
Would people be willing to ditch the loudness (or have it work differently, possibly not correctly) in favour of bass and treble?
Yes. In fact, if we could also have some control over the slope and cutoff point of the loudness control, that would be ideal.

When playing with the RTA stuff, I noticed that the loundess control was only really affecting the deepest of the sub-bass frequencies. It had a very sharp frequency peak in the near-subsonic range, and not much above that. I'd rather have it more smoothly increase all the low frequencies instead of just the sub-bass.
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Tony Fabris

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#145314 - 25/02/2003 11:41 Re: cut the time uploading to the MK2 in almost ha [Re: wfaulk]
tfabris
carpal tunnel

Registered: 20/12/1999
Posts: 31563
Loc: Seattle, WA
You really have lost a lot of weight!
Mmm. Hair, too.
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Tony Fabris

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#145315 - 25/02/2003 17:18 Re: cut the time uploading to the MK2 in almost ha [Re: tfabris]
Shonky
pooh-bah

Registered: 12/01/2002
Posts: 2009
Loc: Brisbane, Australia
Well it seems the loudness may not be affected by the bass and treble after all. However the FM bass boost will but I don't see that being much of issue with peope.

I'm having a few minor issues with calculating some of the DSP coefficients but once I sort that out we should be good to go.

As for affecting the slope and cutoff of the loudness, that's probably a separate project.

Also what kind of frequency points are we looking at here? Examples in the manual are 125Hz and 5kHz. Since it basically needs to be pre-calced, we can't have a variable frequency unfortunately. -6db to +6db enough? I only have 4 bits each to play with using genixias code, although Mark said he would give more bits once bass and treble were done properly.
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Christian
#40104192 120Gb (no longer in my E36 M3, won't fit the E46 M3)

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#145316 - 25/02/2003 20:42 Re: cut the time uploading to the MK2 in almost ha [Re: Shonky]
genixia
Carpal Tunnel

Registered: 08/02/2002
Posts: 3411
ISTR that somebody wanted +/-9dB range, and somebody else wanted 0.5dB resolution. Can't win

I'd recommend starting by duplicating the existing range though. It's hard to say what values to use though - the existing EQ fudge is based upon center frequencies and Q factors, whereas the DSP algorithm is based on cutoff frequencies and order (2nd or 3rd IIRC). But I think off the top of my head that a 2nd order at the listed values should be a reasonable approximation to the existing controls. Let me check...
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Mk2a 60GB Blue. Serial 030102962 sig.mp3: File Format not Valid.

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#145317 - 25/02/2003 20:58 Re: cut the time uploading to the MK2 in almost ha [Re: genixia]
genixia
Carpal Tunnel

Registered: 08/02/2002
Posts: 3411
Hmm...

Bass is currently Fc=100Hz, Q=0.2
Treble, Fc=10KHz, Q=0.2

Q figures look wrong (always did) but sound right. Go figure.
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Mk2a 60GB Blue. Serial 030102962 sig.mp3: File Format not Valid.

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#145318 - 27/02/2003 18:29 Re: cut the time uploading to the MK2 in almost ha [Re: lopan]
altman
carpal tunnel

Registered: 19/05/1999
Posts: 3457
Loc: Palo Alto, CA
Maybe, maybe not. Things sometimes move faster than expected

Hugo

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#145319 - 27/02/2003 18:32 Re: cut the time uploading to the MK2 in almost ha [Re: tfabris]
altman
carpal tunnel

Registered: 19/05/1999
Posts: 3457
Loc: Palo Alto, CA
Well, yes and no. Camelot was also the name because "it's the holy grail" (of in-car mp3 players). If you connect to a camelot from emplode, the player icon *is* a castle facade with a very obvious little triangular support keeping it upright.

Hugo

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#145320 - 27/02/2003 18:53 Re: cut the time uploading to the MK2 in almost ha [Re: altman]
tman
carpal tunnel

Registered: 24/12/2001
Posts: 5528
Ahh... I was wondering what the castle icon was for in Emplode's resources. Makes sense now

- Trevor

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#145321 - 27/02/2003 18:56 Re: cut the time uploading to the MK2 in almost ha [Re: tman]
robricc
carpal tunnel

Registered: 30/10/2000
Posts: 4931
Loc: New Jersey, USA
OK, I just had to see it.



Attachments
144095-cameloticon.gif (174 downloads)

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-Rob Riccardelli
80GB 16MB MK2 090000736

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#145322 - 27/02/2003 20:26 Re: cut the time uploading to the MK2 in almost ha [Re: robricc]
tfabris
carpal tunnel

Registered: 20/12/1999
Posts: 31563
Loc: Seattle, WA
Absolutely priceless....
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Tony Fabris

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#145323 - 27/02/2003 22:14 Re: cut the time uploading to the MK2 in almost ha [Re: robricc]
SE_Sport_Driver
carpal tunnel

Registered: 05/01/2001
Posts: 4903
Loc: Detroit, MI USA
This IS a really silly thread.
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Brad B.

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#145324 - 28/02/2003 02:02 Re: cut the time uploading to the MK2 in almost ha [Re: robricc]
simspos
enthusiast

Registered: 28/03/2002
Posts: 230
Loc: Dudley, UK
mmmmmh - castle - nice


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