Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Digital Line Level DACs, Digital Crossovers, Equalizers, etc.

ALL digital DSP (in & out)... What are the options?
ALL digital DSP (in & out)... What are the options?
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 19th August 2016, 12:45 AM   #21
TNT is offline TNT  Sweden
diyAudio Member
 
Join Date: Apr 2003
Location: Sweden
Quote:
Originally Posted by stolbovoy View Post
Hm... In NOS DAC? No sin(x)/x frequency response shaping?
Also ovesampling DACs filters with constant # of taps sound a bit differently as the transients (ringing) has the same length in samples, but different in the real time
Well if there isn't an integrating network, the only thing you hear is noise.

//
  Reply With Quote
Old 19th August 2016, 01:02 AM   #22
stolbovoy is offline stolbovoy  United States
diyAudio Member
 
Join Date: Jul 2004
Location: MD, USA
Quote:
Originally Posted by CharlieLaub View Post
All of those things have to do with the processing of the sampled audio, not the audio itself.
Yes, and this thread is about choosing processing implementation, isn't it?
  Reply With Quote
Old 19th August 2016, 01:11 AM   #23
stolbovoy is offline stolbovoy  United States
diyAudio Member
 
Join Date: Jul 2004
Location: MD, USA
Quote:
Originally Posted by TNT View Post
Well if there isn't an integrating network, the only thing you hear is noise.
//
Do you mean that R-2R DACS will not produce ... legible sound if the output played though hypothetical loudspeaker that doesn't act as an integrating network? Or that NOS means absence of the filtering in analog domain?
  Reply With Quote
Old 21st August 2016, 04:41 PM   #24
JMF11 is offline JMF11  France
diyAudio Member
 
Join Date: Dec 2013
Quote:
Originally Posted by bobthedespot View Post
I have the stm32f769 disco board, and it rocks. You might consider it... spdif in and out, with a touchscreen and sd card slot for storage. Total cost is 80 bucks from mouser.
I bobthedespot,

I'm currently exploring the possibilities offers by the stm32 MCUs (F4, F7), and consider using some associated Nucleo boards. I'm working at the moment with the Stm32F4 discovery

Have you developped some audio application on those processors? Would you share some of the code?

I try to achieve (full digital) Async USB=> DSP => SPDIF or I2S.

Best regards,

JMF
  Reply With Quote
Old 24th August 2016, 11:21 AM   #25
stolbovoy is offline stolbovoy  United States
diyAudio Member
 
Join Date: Jul 2004
Location: MD, USA
I wonder if PIC32MZ is enough to build 4 way crossover running at 192kHz? I've used PICs before and TQFP is more DIY friendly.
  Reply With Quote
Old 24th August 2016, 05:46 PM   #26
cogeniac is online now cogeniac  United States
diyAudio Member
 
Join Date: Feb 2015
Location: Petaluma, CA
Quote:
Originally Posted by stolbovoy View Post
1,2) It is not about stereo image, but yes if there are different clocks my tweeter may be ahead or behind of mid-range due to ASRC. Probably not by a lot, but still can. Spending considerable amount of efforts to clock everything from one clock source (DAC) it sounds less then optimal solution.
3) If DAC itself is NOS than 192 is better. And also - why not? If my PC can do it without an effort, why should I us inferior solution that will cost me $1300 more?
If you use something like the MiniDSP MiniSHARC (yes, it is "only" 24/96), you clock the HF and LF channels out using the SHARC MCLK, so all of the channels are synchronous (the DACS are all driven by the same clock).

Put the SHARC on the input side of the SHARC, and use it to rate convert all of the various input formats to 24/96, and to elect from the different input sources.

The SHARC can handle additional channels, but for very additional channel, you will have fewer digital filter taps, and thus less resolution in the filters.
  Reply With Quote

Reply


ALL digital DSP (in & out)... What are the options?Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

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

Similar Threads
Thread Thread Starter Forum Replies Last Post
Digital Crossover/DSP for active speaker with analog and digital input? Guitarfreak Digital Line Level 4 16th July 2013 07:46 AM
RS-232 cable for DSP-Amp Digisynthetic DSP-1400 Sabbelbacke Parts 0 9th May 2009 10:33 AM
Options for upgrading Pre2-dsp. Tristanc1 Solid State 0 26th February 2006 02:07 AM
Digital (DSP) filter magnus Digital Source 12 9th February 2003 01:17 PM
Dsp controled digital amp? partyjups Solid State 3 6th October 2001 04:41 PM


New To Site? Need Help?

All times are GMT. The time now is 02:29 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio
Wiki