Go Back   Home > Forums > Source & Line > PC Based

PC Based Computer music servers, crossovers, and equalization

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 5th May 2012, 12:04 AM   #11
diyAudio Member
 
Join Date: Jan 2008
Location: Virginia
What's the point? Just use a compatible player!
As for youtube and other streamed audio sites... is pointless to use ASIO because the audio quality is low anyway.
  Reply With Quote
Old 5th May 2012, 01:40 AM   #12
Billyo is offline Billyo  Australia
diyAudio Member
 
Join Date: Apr 2011
Location: Sydney
Yes, but why make it worse by replaying thru k-mixer?

Streaming stuff gives me an almost unlimited music collection that I love to explore in.
__________________
Epoxy Resin fixes everything!
  Reply With Quote
Old 5th May 2012, 02:01 AM   #13
Pano is offline Pano  United States
diyAudio Moderator
 
Pano's Avatar
 
Join Date: Oct 2004
Location: Milliways
Blog Entries: 4
I use ASIO when real ASIO drivers are available. Otherwise kernel streaming seems to be just as good. Both can do bit perfect.
  Reply With Quote
Old 5th May 2012, 06:01 AM   #14
diyAudio Member
 
Join Date: Apr 2004
Location: 12km off the alaska highway in northern BC
Quote:
Can't understand why even the ASIO plugin help page says it won't help - on my system, which is pretty standard, it makes a huge difference.
My m-audio 1010lt soundcard supports native asio, and I run it for reasons of convenience (not using window's mixer, only the m-audio mixer) in conjunction with foobar200 asio output - real Asio, bypassing window's for years w/o problem.
I have compared both switching directly and I cannot hear a difference at all.

I upsample to 48kHz in foobar2000, and the signal is fed direct to a hypex amp (built into my speakers) via SPDIF where it is converted to analogue feeding kef 104/2.

The TV audio signal (from sat. receiver) enters the spdif input of the soundcard, and also bypasses window's mixer.

Only streaming audio is using the window's stack.

I also have used wasapi, and still cannot hear a difference between asio, direct sound and wasapi.
I have to assume following the logic of the golden eared ones that my system simply is not revealing enough...said.
  Reply With Quote
Old 5th May 2012, 01:15 PM   #15
diyAudio Member
 
Join Date: Aug 2009
Location: North Texas, USA
If you're using Win7, just go with WASAPI. Also bypasses kmixer.


Quote:
Originally Posted by Billyo View Post
How about using the HDMI out from the videocard? I use a ATI HD5450 chipset to output to my TV, does audio from that still go thru k-mixer?

Also, has anyone tried using Vitual Audio Cable to allow non-ASIO compatible apps to bypass K-mixer and go to ASIO4ALL?
__________________
I was so much older then, I'm younger than that now.
  Reply With Quote
Old 5th May 2012, 10:36 PM   #16
boris81 is offline boris81  United States
diyAudio Member
 
Join Date: Oct 2009
Location: white plains, ny
I notice a pronounced difference between DirectSound and ASIO.
In certain cases the Windows 7 mixer will pass bit perfect audio. I can't tell a difference between ASIO and the Windows7 mixer on my computer but I didn't run exhaustive tests.

audio-kraut, upsampling will change the original sound, most likely degrading the quality. You should not compare sound with the upsampling on.
  Reply With Quote
Old 5th May 2012, 11:32 PM   #17
diyAudio Member
 
Join Date: Jan 2008
Location: Virginia
DirectSound will upsample the audio samplerate to whatever is reported in Windows mixer as capability of soundcard:

Policy for Sample Rate Conversion of Audio Streams
Quote:
•DirectSound clients

For rendering streams, the Windows multimedia control panel (Mmsys.cpl) gives a user some control over which type of SRC the KMixer driver uses with DirectSound. The slider shown in the Advanced Audio Properties dialog (see DirectSound Hardware-Acceleration and SRC Sliders) assigns the settings Good through Best to linear interpolation, multipoint interpolation, and high-end multipoint interpolation, respectively. Linear interpolation is the default for the DirectSound versions that ship with Microsoft Windows 98/Me and Windows 2000. In Windows XP and later, the default is high-end multipoint interpolation.
For DirectSound capture streams, KMixer always uses high-end multipoint interpolation.
  Reply With Quote
Old 6th May 2012, 12:27 AM   #18
boris81 is offline boris81  United States
diyAudio Member
 
Join Date: Oct 2009
Location: white plains, ny
I saw somewhere a diagram describing how DirectSound works. It showed it going through the Windows mixer! It's speed comes from bypassing the Windows Kernel and using hardware acceleration on supported devices. It doesn't guarantee bit perfect playback.

I see absolutely no reason to use DirectSound for hi-fi.
  Reply With Quote
Old 6th May 2012, 01:06 AM   #19
diyAudio Member
 
Join Date: Apr 2004
Location: 12km off the alaska highway in northern BC
Quote:
audio-kraut, upsampling will change the original sound, most likely degrading the quality. You should not compare sound with the upsampling on.
I do not agree (most studio productions runs afaik 48 or 96kHz processing) however it simply is not an issue in my case as the AS 2.100 hypex amp has a build in DAC that upsamples to 48kHz anyway for DSP processing ( I use the hypex software controlling the DAC to crossover <50Hz to a subwoofer).
  Reply With Quote
Old 12th May 2012, 01:51 PM   #20
diyAudio Member
 
Join Date: Nov 2004
Location: Germany
Quote:
Originally Posted by Billyo View Post
Directing the audio through the ASIO output rather than the onboard Realtek sound just blew me away with the difference in quality.
If the difference is that big, I'd be inclined to think that either some sort of effects was enabled or you stumbled across this bug in Win7 which gives horrible quality when output from the MME (waveOut) API has to be resampled. Or, of course, volume for the digital output was not maxed out.

Output via DSound can be just fine, it's just more fussy to use as you have to keep track of sample rates and adjust output device properties accordingly if you want to avoid resampling. WASAPI in exclusive mode, as used by Foobar's WASAPI plugin or ASIO4All, allows automagic sample rates switching like in the olden days.
  Reply With Quote

Reply


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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Work in progress... Asio4All Q pcb121055 PC Based 3 25th November 2011 04:59 AM
Win7 DRC only on HDMI, not optical. How to enable? Circlotron PC Based 1 4th March 2011 03:25 AM
Win7 volume control - good enough or still need preAmp? Galgo PC Based 22 2nd June 2010 04:54 PM
Problem of ASIO4all with pcm2702 hajame Digital Source 6 20th April 2008 06:30 AM
CLIO-Win7...compatible with USB sound cards? ashok Everything Else 2 31st December 2005 11:41 AM


New To Site? Need Help?

All times are GMT. The time now is 11:43 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2