FORUMS
Remove All Ads from XDA

[APP] VoodooEQ 1.6 - 13-03-22 - control the voodoo sound hardware equalizer

8,837 posts
Thanks Meter: 3,043
 
By FadeFx, Senior Member on 12th February 2013, 09:54 AM
Post Reply Email Thread
12th February 2013, 02:46 PM |#11  
FadeFx's Avatar
OP Senior Member
Flag Vienna
Thanks Meter: 3,043
 
Donate to Me
More
AW: [APP] Voodoocontrol - control the voodoo sound hardware equalizer
Quote:
Originally Posted by superkoal

Thanks for this app, i really like it!

I think the EQ's of the audio chip are parametric, do you think you could implement that as i would like to adjust the frequency bands

Yes it is, but i have no idea how it works yet, i will have a look later...

_________________________
tapatalked from GalaxyS3
The Following User Says Thank You to FadeFx For This Useful Post: [ View ] Gift FadeFx Ad-Free
 
 
12th February 2013, 03:01 PM |#12  
FadeFx's Avatar
OP Senior Member
Flag Vienna
Thanks Meter: 3,043
 
Donate to Me
More
AW: [APP] Voodoocontrol - control the voodoo sound hardware equalizer
Quote:
Originally Posted by purpleraintoxicity

Can you add reset button?

Sent from my GT-I9000 using Tapatalk 2

Yep, noted on todo list...

Also i think of adding some presets.

_________________________
tapatalked from GalaxyS3
The Following User Says Thank You to FadeFx For This Useful Post: [ View ] Gift FadeFx Ad-Free
12th February 2013, 03:18 PM |#13  
Senior Member
Flag Vienna
Thanks Meter: 720
 
More
Quote:
Originally Posted by FadeFx

Yes it is, but i have no idea how it works yet, i will have a look later...

In this Datasheet i found that the EQ center frequencies and bandwidths are fixed in default mode, but can be programmed in reTune mode. Don't know if you are working that low level oriented or if you leave this to voodoo sound, meaning you would have to find out how voodoo configures the eq mode.

Furthermore a graphic display of the eq settings would be nice, don't know if you are familiar with the terms.

Let me know if i can help you with anything!

Anyway thanks for this app, it's very good as it is now, the parametric eq is just a nice-to-have

EDIT:
You can also see in the data sheet that as expected band 1 (low) and band 5 (high) are shelf-EQ's, while the mid bands have bell characteristics.
Very interesting seems to be that for negative gain values the bandwidth of the EQ's is big times smaller than for positive gains, making negative gain settings more a cut for specific frequencies (the currently fixed center frequencies) and therefore not very usable.
The further i read the datasheet the more sure I am that filter bandwidths are not programmable.
12th February 2013, 04:30 PM |#14  
FadeFx's Avatar
OP Senior Member
Flag Vienna
Thanks Meter: 3,043
 
Donate to Me
More
AW: [APP] Voodoocontrol - control the voodoo sound hardware equalizer
I think there is a way, looks like voodoo sound has an interface for that, check the file /sys/class/misc/voodoo_sound/headphone_eq_values it contains 3 values for each band and some hex values:

Code:
1 A 0x0FE3
1 B 0x0403
1 PG 0x0074
2 A 0x1F03
2 B 0xF0F9
2 C 0x040A
2 PG 0x03DA
3 A 0x1ED2
3 B 0xF11A
3 C 0x040A
3 PG 0x045D
4 A 0x0E76
4 B 0xFCE4
4 C 0x040A
4 PG 0x330D
5 A 0xFC8F
5 B 0x0400
5 PG 0x323C
We just need to find out how this works and we can configure it like we do with all other values...

_________________________
tapatalked from GalaxyS3
The Following User Says Thank You to FadeFx For This Useful Post: [ View ] Gift FadeFx Ad-Free
12th February 2013, 04:44 PM |#15  
Senior Member
Flag Vienna
Thanks Meter: 720
 
More
Quote:
Originally Posted by FadeFx

I think there is a way, looks like voodoo sound has an interface for that, check the file /sys/class/misc/voodoo_sound/headphone_eq_values it contains 3 values for each band and some hex values:

Code:
1 A 0x0FE3
1 B 0x0403
1 PG 0x0074
2 A 0x1F03
2 B 0xF0F9
2 C 0x040A
2 PG 0x03DA
3 A 0x1ED2
3 B 0xF11A
3 C 0x040A
3 PG 0x045D
4 A 0x0E76
4 B 0xFCE4
4 C 0x040A
4 PG 0x330D
5 A 0xFC8F
5 B 0x0400
5 PG 0x323C
We just need to find out how this works and we can configure it like we do with all other values...

_________________________
tapatalked from GalaxyS3

Which of the values do you change with your app at the moment?
This value is gain then.
Seems the shelf EQ's 1&5 have one parameter less.

EDIT: Gain value is 5 bits only according to data sheet, how do you handle this?
Or better question: how does voodoo handle this? Is the given 16 bit value scaled?

EDIT2: Would be nice to see the actual gain value (-12dB...0...12dB in 1 dB steps), maybe on the right side of the seekbar.
Also the current center frequencies would be nice to know for the users (1: 100Hz, 2: 300Hz, 3:875Hz, 4: 2.4kHz, 5: 6.9kHz) according to data sheet
12th February 2013, 05:13 PM |#16  
FadeFx's Avatar
OP Senior Member
Flag Vienna
Thanks Meter: 3,043
 
Donate to Me
More
AW: [APP] Voodoocontrol - control the voodoo sound hardware equalizer
Gains are separate files, headphone_b1_gain ...

_________________________
tapatalked from GalaxyS3
The Following User Says Thank You to FadeFx For This Useful Post: [ View ] Gift FadeFx Ad-Free
12th February 2013, 06:03 PM |#17  
Senior Member
Flag Vienna
Thanks Meter: 720
 
More
Quote:
Originally Posted by FadeFx

Gains are separate files, headphone_b1_gain ...

_________________________
tapatalked from GalaxyS3

After converting the hex values to decimal in excel i think that PG values are the center frequencies, most likely simply in hex.
I try to modify them manually and see what happens.

EDIT: Can't really access these files manually with root explorer... maybe you can try?
12th February 2013, 07:06 PM |#18  
Senior Member
Flag Vienna
Thanks Meter: 720
 
More
I sent a message to supercurio (the dev of voodoo sound), he has always been very supportive, so maybe he finds a few minutes to help us out!
12th February 2013, 07:19 PM |#19  
FadeFx's Avatar
OP Senior Member
Flag Vienna
Thanks Meter: 3,043
 
Donate to Me
More
AW: [APP] Voodoocontrol - control the voodoo sound hardware equalizer
New version online, fixed a problem with set on boot and probably some other things.

_________________________
tapatalked from GalaxyS3
12th February 2013, 07:20 PM |#20  
FadeFx's Avatar
OP Senior Member
Flag Vienna
Thanks Meter: 3,043
 
Donate to Me
More
AW: [APP] Voodoocontrol - control the voodoo sound hardware equalizer
Quote:
Originally Posted by Kordius

I have FC when I running this app : (
I'm on helly bean.

Sent from my GT-I9000 using xda premium

Can you try latest version if it fixes your issue?

_________________________
tapatalked from GalaxyS3
12th February 2013, 08:19 PM |#21  
kretex's Avatar
Senior Member
Thanks Meter: 55
 
More
Re: [APP] Voodoocontrol - control the voodoo sound hardware equalizer
FC on cm10.1 latest nightly

Sent from my GT-I9000 using xda premium
The Following User Says Thank You to kretex For This Useful Post: [ View ] Gift kretex Ad-Free
Post Reply Subscribe to Thread

Guest Quick Reply (no urls or BBcode)
Message:
Previous Thread Next Thread
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes