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Possibe to EQ digital audio ahead of USB ports?


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#1 svejk

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Posted 14 October 2012 - 10:30 PM

Winxppro 32bit.

Is this possible? Soundcards are internal DAC that feed the headphone jack but the USB output is digital and unaffected by Control Panel audio settings.

Is there a utility/gui that I can install to EQ this digital audio output?

I'm listening to web radio via a USB connected fm xmitter that does not have its own EQ in the GUI. Nor is there any option to add it.

Can I install an EQ to tune the digital audio before it even hits the USB ports?

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#2 svejk

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Posted 15 October 2012 - 11:24 AM

Boy can I ask the right questions eh? Seems like it would be simple one for computer enthusiasts.
Posted now going on 48 hours on some other boards.

gearslutz.com
diyaudio.com
whirlpool.net.au
avsforum.com
last.fm

Going on 400 total views. Only two, probably sarcastic, answers that "yes, it's possible".
Nothing concrete. No links.

This is pretty astonishing.

Anybody?

#3 svejk

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Posted 15 October 2012 - 07:08 PM

This is really FU@@ing irritating. Another forum suggested J River Media Center. When I asked if he was connected via headphone jack or USB he replied that he was indeed connected via USB (digitally) and indeed the EQ worked.

So it's possible.

J River Media Center is expensive and includes 999 features that will complicate my life and I don't need. But if that poster is to be believed, then it IS possible to EQ the digital signal prior to the USB connection.

So will someone PLEASE direct me to a simple EQ that can be added to the desktop to control USB audio output?

#4 hamluis

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Posted 16 October 2012 - 09:45 AM

IMO, your approach/question is all wrong.

Any player these days...probably provides equalizer tool capability as a basic part of that program. At least...that's been my experience for years now.

The control panel for these players...should reveal the equalizer option.

Louis


Edited by hamluis, 02 April 2017 - 03:12 PM.


#5 svejk

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Posted 16 October 2012 - 11:13 AM

IMO, your approach/question is all wrong.

Any player these days...probably provides equalizer tool cpaability as a basic part of that program. At least...that's been my experience for years now.

The control panel for these players...should reveal the equalizer option.

Louis


Louis. VLC player, winamp, windows media player, etc, et al... provide equalization for the internal speakers and the headphone jack. They apply only to the analog soundcard output.
The USB output is digital and bypasses the soundcard. No player that I've tried so far provides an option to control the USB audio.

#6 hamluis

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Posted 16 October 2012 - 11:31 AM

USB...is the power source for the speakers that I have ever had...only the power source.

My sound still goes through the soundcard to my external speakers.

Are you telling us that you have speakers that provide sound output via the USB ports?

In any case, beyond my ken...moving topic to External Hardware.

Louis

#7 svejk

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Posted 18 October 2012 - 12:07 AM

USB...is the power source for the speakers that I have ever had...only the power source.

My sound still goes through the soundcard to my external speakers.

Are you telling us that you have speakers that provide sound output via the USB ports?

In any case, beyond my ken...moving topic to External Hardware.

Louis


Louis thank you for the response. Please explain the above a little more clearly for me? What do you mean "USB is the power source for the speakers that have ever had". I really don't understand that.

In any case this is not an external hardware issue. As I will explain below. Please return this thread to winxp home and pro section.

There are USB connected headphones on the market (primarily for gaming I understand) and USB connected external speakers as well. These devices connect directly to the computer via the usb ports. Since they are not connected to the headphone output they are not controlled by the PC's soundcard. The digital audio they receive from the PC must be converted somehow. Therefore they have their own DAC, drivers, and software. They are indeed external devices.

There are also USB connected FM transmitters. Like the headsets mentioned, they have their own drivers, DAC, and software.

I own such a USB transmitter. I've installed the driver. The sofware lacks any EQ or tone controls. No remedy there. My question therefore does not apply to my external hardware.

I would like to be able to control EQ if that is possible since the sound card in a PC does not control digital audio that goes to the USB ports. Since it's not possible with this external device, I would like suggestions as to how to EQ the digital internally on it's way to the USB ports since winxp's equalizer, and others that I've tried, only control the soundcard output and have no affect (in fact they are greyed out entirely) when an audio device is plugged into the USB ports. Winxp's audio controls do not affect the digital stream going to the USB ports. I would like to know if it's possible to implement any EQ that is capable of this.

This is an internal hardware question and I'm running winxppro 32 bit. Please return the thread so that I have some chance at assistance.

Thank you.

Edited by svejk, 18 October 2012 - 12:12 AM.


#8 hamluis

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Posted 18 October 2012 - 05:27 PM

Since I don't seem to be making sense to you...I'll pass the baton to others who might have a clue :).

Louis

#9 Hancockenstein

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Posted 11 July 2014 - 07:55 PM

Winxppro 32bit.

Is this possible? Soundcards are internal DAC that feed the headphone jack but the USB output is digital and unaffected by Control Panel audio settings.

Is there a utility/gui that I can install to EQ this digital audio output?

I'm listening to web radio via a USB connected fm xmitter that does not have its own EQ in the GUI. Nor is there any option to add it.

Can I install an EQ to tune the digital audio before it even hits the USB ports?

in the same predicament, did you ever sort this out?  the 'help' you got was a bit silly.  anyhoo, hope you found a solution, or maybe i can get back to you should I find one first.



#10 Platypus

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Posted 11 July 2014 - 08:37 PM

This is not something I've had to look into, but since the device is presumably a USB audio device like any other, I suspect it probably functions as a Class Compliant USB Audio Device, and just gets whatever control the Windows Mixer offers.

If the particular device in question can support a streaming protocol like ASIO (Audio Streaming I/O), then with an ASIO driver like ASIO4all loaded, it could be possible to use a standalone VST host with one of the free VST EQ plugins to do the job. But that's all just educated guesswork on my part.

I know folk using DJ and Karaoke systems can have a similar challenge.
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#11 lti

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Posted 13 July 2014 - 11:17 AM

There are some cheap (around $10) speakers that only receive 5V power for the amplifier from the USB port. The audio signal still comes from the sound card.

This is one example:

http://dansdata.com/sp691.htm

 

I haven't ever seen a software equalizer that wasn't part of the audio driver or a media player. If the USB device is the default audio device (which can be set in the control panel in Windows), the EQ in the free media players should work. I don't see why it wouldn't work.



#12 Stoogie

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Posted 09 October 2015 - 03:17 AM

EqualizerAPO http://sourceforge.net/projects/equalizerapo/
With Peace http://sourceforge.net/projects/peace-equalizer-apo-extension/



#13 SunilNair

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Posted 17 June 2016 - 02:11 PM

Thank you Stoogie! it works... just thought I'd say this since no one else did... created an account just to say this. Btw it's a system-wide equalizer. 

 

Didnt work the first time. Then closed the browser, etc and restarted, and it worked.

 

Just so everyone knows, in the editor, the darkened power symbol means it's off! Get to the editor in the install folder!

 

Thanks and Peace Stoogie!

 

Sunil


Edited by SunilNair, 17 June 2016 - 02:18 PM.


#14 eworkflow

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Posted 06 March 2017 - 02:39 PM

Sveik, your (old but still very valid) question is one of the most important issue an average audiophile may address.

For some strange reasons, in the recent years the reality is that audiophile industry focuses on obscene prices to introduce various esoteric elements of the audio path while forgetting certain "old-fashion" remedies that offer the highest bang for the buck. The rule that the chain is as strong as the weakest part of it never ends. That takes us to the fact that our room acoustic (applicable to all amplification/speaker combinations) and our individual-ear hearing curves (applicable to all amplification/headphones combinations) are so often unjustly skipped. Indeed, changing frequency response AFTER digital processing by DAC and BEFORE the reproduced sound reaches our ears is the key and, practically, the most cost-effective mean of improving (read: restoring the original) sound. The reality of what reaches our ears (or, more precisely, separately our left and right ear) is surprisingly bad: http://www.stereophile.com/content/deqx-premate-da-processordigital-equalizer-page-2#cULwPkPb52gu6Xwo.97 and the remedies do not have to cost $5k. Specific ways to accomplish grand improvements always depending on our individual setup and may include:
 

A. Using DAC/headphone amp unit with (even if elemental) internal equalizer. I predict that this will be the next trend: high-quality DACs with custom adjustable frequency-response curves (preferably separate for the left & right channel). Assuming that, for example, a DAC, such as the highly-regarded Dragonfly Red, will create the same great sound when driving your headphones and when driving your amp/speaker combination is simply naive and wrong.

B. Using an external multi-band (preferably 32-band external device OR internal app) equalizer after the DAC/headphone amp unit. Good quality 32-band equalizer with separate left/right
 channels can cost as little as $150.

 

My (at least well-proven for me) method is simple: use separate (left- and right-channel) pink noise source and carefully selected few reference music tracks, and always create your own response curves anyway you find possible. In some setups, using a calibrated reference microphone (especially for commercial venues) with a basic audio spectrum analyzer is always money well spent.


Edited by eworkflow, 07 March 2017 - 10:51 AM.


#15 GustavoWoltmann016

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Posted 02 April 2017 - 12:41 PM

I had the same issue with EqualizerAPO. Equalizer was not affecting neither USB port nor Headphone jack. I don't know what was the reason. Recently I have installed EqualizerPro  and it is working perfectly with USB port and Headphone jack. http://www.equalizerpro.com/


EqualizerPro Best Music Equalizer for Windows 7/8/10





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