Welcome Guest! To enable all features please Login or Register.

Notification

Icon
Error

Login


Options
View
Go to last post Go to first unread
lwi  
#1 Posted : Tuesday, March 15, 2011 3:57:29 AM(UTC)
lwi

Rank: Member

Groups: Member
Joined: 11/4/2010(UTC)
Posts: 17

Hi,

I have a volumite plugged on an opus dac.
I put PB3 and PB1 to GND in order to be able to play 192k material.
The selected digital filter thus is the response 1 : "linear phase soft-knee filter".

A) How can I try the other responses ? More specificaly, I am interested in trying the response 2 and response 4.

B) Is it possible to play with the resistors and PB3 PB1 or do i need another firmware ?

C) is the anti-clipping mode selected ?

D) Infinite Zero Detect : IZD 0 or 1 ?

Thanks for your attention.

Lwi
glt  
#2 Posted : Tuesday, March 15, 2011 8:10:47 AM(UTC)
glt

Rank: Member

Groups: Member
Joined: 11/9/2007(UTC)
Posts: 453
Location: usa

You will need a different controller and different firmware
lwi  
#3 Posted : Tuesday, March 15, 2011 9:08:21 AM(UTC)
lwi

Rank: Member

Groups: Member
Joined: 11/4/2010(UTC)
Posts: 17

Ouch, not what I was hoping.
Ok if I want to modify the firmware to try another filter how can I do that ?
glt  
#4 Posted : Tuesday, March 15, 2011 9:31:14 AM(UTC)
glt

Rank: Member

Groups: Member
Joined: 11/9/2007(UTC)
Posts: 453
Location: usa

You can take a look here: hifiduino.blogspot.com
I built a controller for the OPUS and then for the Buffalo. The code for the controller for Buffalo is more "refined" just because I learned more things. The Buffalo controller uses a "regular" parallel LCD, the code for the OPUS uses a serial LCD.

Or you could wait for the controller that TPA is building (but I don't know when it will be released)
lwi  
#5 Posted : Wednesday, March 16, 2011 2:29:14 AM(UTC)
lwi

Rank: Member

Groups: Member
Joined: 11/4/2010(UTC)
Posts: 17

I already found your site and took a look at the very interesting information you have.
But before going the arduino track, I am hoping to be able to modify the firmware of the volumite in order to select the filter.
The microcontroller is a Atmel ATtiny25.
Or is there a solution from Brian or Russ ? Can you send me a new custom firmware ?
Russ White  
#6 Posted : Wednesday, March 16, 2011 5:58:12 AM(UTC)
Russ White

Rank: Administration

Groups: Administration, Customer
Joined: 10/24/2006(UTC)
Posts: 3,979
Location: Nashville, TN

Thanks: 25 times
Was thanked: 89 time(s) in 83 post(s)
I would be glad to send you the firmware source code.
lwi  
#7 Posted : Wednesday, March 30, 2011 2:31:33 AM(UTC)
lwi

Rank: Member

Groups: Member
Joined: 11/4/2010(UTC)
Posts: 17

I am still very interested in the source code of the volumite for WM8741 :)
If you have the AVR studio project I will be very happy.
Thanks for your help and support.
lwi  
#8 Posted : Friday, June 17, 2011 2:47:49 AM(UTC)
lwi

Rank: Member

Groups: Member
Joined: 11/4/2010(UTC)
Posts: 17

Hi,

I am still interested by the code, can I have the source code please ?
After listening so far, I like a lot the clarity of the opus dac :)
Thanks.
lwi  
#9 Posted : Monday, July 18, 2011 8:55:25 AM(UTC)
lwi

Rank: Member

Groups: Member
Joined: 11/4/2010(UTC)
Posts: 17

Hi,

I am still interested !
Anybody here ?

Thanks.
Rss Feed  Atom Feed
Users browsing this topic
Forum Jump  
You cannot post new topics in this forum.
You cannot reply to topics in this forum.
You cannot delete your posts in this forum.
You cannot edit your posts in this forum.
You cannot create polls in this forum.
You cannot vote in polls in this forum.