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foo_dsp_bassexciter, A psychology model based ADVANCED bass exciter.
China_DemonViper
post Jan 11 2011, 08:00
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First of all, sorry for my poor english ;-)
Several days ago, I developed this effect plugin.
This is a psychology model based ADVANCED bass exciter, you can get a variety of bass effects by tweaking the parameters, even the Dolby® TruBASS®.
First, this plugin uses the Pole Filter and FFT to generate three waves(main bass harmonic wave, above pre-wave and below pre-wave). Then, moving some bass of source to lower frequency and exciting the source with three waves. Phase will be corrected at last.
The final bass effect sounding very very cool ;-)

Recommended parameters (for headphone):
Threshold Frequency 1200Hz
Harmonic Frequency 60Hz
Harmonic Bandwidth 80Hz
Harmonic Energy 24dB
Above Pre-Wave Decay -92dB
Below Pre-Wave Decay -10dB

Download link: Mirror1(Located in china)
This is a FREE software, you can use and redistribute it as you like.
If you like this stuff or want to support my future development, you can buy me a beer ;-), and it will be very appreciated.
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Rozzo
post Jan 11 2011, 12:27
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This works so fine for me, thanks!

Ys
Rozzo
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touccer
post Jan 11 2011, 19:02
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Very impressive DSP wink.gif
Using it with K 702
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NullString
post Jan 12 2011, 02:37
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Incredible
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China_DemonViper
post Jan 14 2011, 10:00
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version updated :-)
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tribaljet
post Jan 14 2011, 19:20
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I admit that most similar plugins I've seen were rubbish, but yours is just plain amazing smile.gif

I wonder, could you possibly add the possibility to save presets? That way users could switch easily from rather different sounding configurations.
Also, when adjusting the sliders, the sound crackles considerably, which I don't know if it is easily solvable or not, to work as the noise reduction plugin, for instance. With these two things solved, the plugin would be perfect biggrin.gif

Overall, the plugin is very impressive, even more when using my XD-53
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rx32555
post Jan 14 2011, 20:18
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Very nice plugin. smile.gif
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China_DemonViper
post Jan 15 2011, 08:01
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I don't know how to edit the topic...
Version updated.
v1.0.12 :
Fix a memory leak.
Add "Save&Load Configuration", now you can save & share your presets.

Best wishes.
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tribaljet
post Jan 15 2011, 13:48
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QUOTE (China_DemonViper @ Jan 15 2011, 07:01) *
I don't know how to edit the topic...
Version updated.
v1.0.12 :
Fix a memory leak.
Add "Save&Load Configuration", now you can save & share your presets.

Best wishes.


Thanks, saving and loading configs work nice smile.gif
About editing the topic, I think you have to talk with the admins for them to change your account to developer, that way you can edit the topic and the first post.

Looking forward to what further improvements might show up biggrin.gif
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xan K
post Jan 15 2011, 18:52
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Great! Thank you for the nice work! Keep it up dude!
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tribaljet
post Jan 26 2011, 16:34
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Does anyone care to post some settings for different gear?

Right now I'm using the default settings with a little adjustment:
Threshold Frequency: 1200Hz
Harmonic Frequency: 80Hz
Harmonic Bandwidth: 80Hz
Harmonic Energy: 20dB
Above Pre-Wave Decay: -92dB
Below Pre-Wave Decay: -10dB

Though with these settings there are quite some genres that sound a bit veiled or muffled somehow.

I've got slightly better results with:
Threshold Frequency: 1200Hz
Harmonic Frequency: 200Hz
Harmonic Bandwidth: 100Hz
Harmonic Energy: 20dB
Above Pre-Wave Decay: -92dB
Below Pre-Wave Decay: -10dB

Any tips on how to improve bass response without affecting the remaining frequency range?

PS: I'm listening through headphones, a pair of XD-53.
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China_DemonViper
post Jan 27 2011, 06:12
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QUOTE (tribaljet @ Jan 26 2011, 23:34) *
Does anyone care to post some settings for different gear?

Right now I'm using the default settings with a little adjustment:
Threshold Frequency: 1200Hz
Harmonic Frequency: 80Hz
Harmonic Bandwidth: 80Hz
Harmonic Energy: 20dB
Above Pre-Wave Decay: -92dB
Below Pre-Wave Decay: -10dB

Though with these settings there are quite some genres that sound a bit veiled or muffled somehow.

I've got slightly better results with:
Threshold Frequency: 1200Hz
Harmonic Frequency: 200Hz
Harmonic Bandwidth: 100Hz
Harmonic Energy: 20dB
Above Pre-Wave Decay: -92dB
Below Pre-Wave Decay: -10dB

Any tips on how to improve bass response without affecting the remaining frequency range?

PS: I'm listening through headphones, a pair of XD-53.


Sorry for my poor english, em...I want to explain, but I don't know how to express some functions in english -.-
Please imaginate it: ;-)
Threshold Frequency : This is the frequency boundary that the plugin processed.
Harmonic Frequency : This is the main bass frequency. In other words, the energy point of the bass wave(generated). Min value will increase the flexible of bass sound, but the endpoint device requirments will be high(maybe a hifi headphone or a subwoofer).
Harmonic Bandwidth : This is the bandwidth of the main bass wave. Max value will diffuse the energy point. Min value will make the bass more tight.
Harmonic Energy : This is the energy of the main bass wave(especially the energy point). Max value will make the final sound being compressed(or limited).
Above Pre-Wave Decay: This parameter controls a notch wave above main bass frequency and the main bass energy decay. Min value will make the human voice more clearly.
Below Pre-Wave Decay: This parameter controls a notch wave below main bass frequency and the frequency movements of the source bass.

If you have a HiFi endpoint device, small harmonic frequency and harmonic bandwidth will be appreciated.
If you hace a cheap endpoint device, large harmonic frequency, harmonic bandwidth and above pre-wave decay will be appreciated.
In general, a small above pre-wave decay always be better.
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nosyfred
post Jan 27 2011, 16:52
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Congratulations! Nice device. Preset load/save runs very fine.

Using these parameters (soft fundamental deepness):
Threshold Frequency: 1200 Hz
Harmonic Frequency: 60 Hz
Harmonic Bandwidth: 80 Hz
Harmonic Energy: 20 dB
Above Pre-Wave Decay: -92 dB
Below Pre-Wave Decay: -10 dB

Higher values of harmonic frequency/bandwidth let sound bass guitar more funky. (o:
Harmonic Frequency: 200 Hz
Harmonic Bandwidth: 100 Hz

Higher values of harmonic energy are masking too many details.
Harmonic Energy: 24 dB

Equipment:
o headphones: Sennheiser HD 600
o monitors: Event 20/20bas
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tribaljet
post Jan 27 2011, 18:33
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China_DemonViper, so far I've seen 3 people using your plugin with headphones which are definitely not cheap, and some settings did have to be changed for the sound to feel right. I don't know how the others are plugging their headphones, but I'm running mine through a headphone amplifier, and the so called cheap endpoint device settings seem to be closer to what sounds better, except the above pre-wave decay.

Harmonic energy usually ranges between 16 to 20dB, depending on the kind of music.

Is there room for improvement on the plugin? Also, I really think there should be a few config presets to help people get sound better for their equipment easier. Maybe if the list grew with good and enough presets, it could be included in the Info window (as well as an external txt file)

This post has been edited by tribaljet: Jan 27 2011, 18:49
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nosyfred
post Jan 27 2011, 19:23
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@China_DemonViper:
Above Pre-Wave Decay and Threshold Frequency changes midrange color of the mix drastically. So comparing gets very difficult. A bypass switch could be very constructive exploring minimal overall sound change.

Harmonic Energy should be between 12 dB (big speakers) to maximum 20 dB (headphones). Higher values results in unwanted booming.

@tribaljet:
My headphones are driven by a (discrete) headphone preamp directly plugged behind DAC.
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tribaljet
post Jan 27 2011, 20:25
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Nice, nosyfred. I like the bypass idea, it's more practical than adding and removing bassexciter from the DSP chain.

HD 600 do benefit from amping, I would be surprised if you were running it straight from the computer output.

Where do you place bassexciter in the active DSPs, further down or more at the beginning, priority wise?
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nosyfred
post Jan 27 2011, 22:00
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For device test I had only the enhancer in chain. (o:

Generally in mastering chains I tend to place enhancers further at the beginning. They need headroom in order to avoid (bass) distortions.
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tribaljet
post Jan 27 2011, 22:03
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Fair enough. I do have a resampler first, bs2b second and bassexciter right after. Keeping it simple smile.gif Though I go back and forth between bassexciter and a VST bridge, which gives me a lot of headroom to play with the audio if I wish to.
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nosyfred
post Jan 27 2011, 22:20
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Interesting. You are listening binaural? I have to try out bs2b. Can you adjust personal HRTF in this plugin?

This post has been edited by nosyfred: Jan 27 2011, 22:21
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tribaljet
post Jan 27 2011, 22:30
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Well, since I use mainly headphones, I have to go with binaural.

It can be adjusted to a degree. The effect is rather subtle, and do depends on the gear used, but it does work and reduces fatigue with zero or near zero distortion of the audio signal (I'd go with zero distortion whatsoever, but I'll let the benefit of doubt be out there wink.gif).
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nosyfred
post Jan 27 2011, 22:50
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I have just tested the driver of my sound card. Now I know, that I do not need the resampler device in chain. My sound card does not perform an internal resampling (http://www.hydrogenaudio.org/forums/index.php?showtopic=9772).
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tribaljet
post Jan 27 2011, 22:55
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Well, with the amount of content with different bit depth and sampling rate out there, your soundcard will always resample. I think you might be referring to a situation like audigy 2 that does a very bad hardware resample to 48KHz. foobar has one of the best resamplers out there, beats so many hardware resamplers that you wouldn't believe smile.gif

Also, different soundcards yield different results with resampling, specially if you do direct up or downsampling with matching even sample rates.

But anyway, resampling is a very controversial subject wink.gif
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popsimax
post Feb 1 2011, 00:04
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Looks like the link is down... re-up please?

EDIT: Nevermind... :/

This post has been edited by popsimax: Feb 1 2011, 00:04
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tribaljet
post Feb 1 2011, 00:10
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Link is working fine on my end.

In case some more people have issues with it, I'm uploading it to my mediafire account: http://www. mediafire.com/?w18wrhux15c3d1w

Hope it's ok with you, China_DemonViper smile.gif

EDIT: Just join the url parts, the full link can't be posted wacko.gif

This post has been edited by tribaljet: Feb 1 2011, 00:11
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China_DemonViper
post Feb 1 2011, 08:15
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QUOTE (tribaljet @ Feb 1 2011, 07:10) *
Link is working fine on my end.

In case some more people have issues with it, I'm uploading it to my mediafire account: http://www. mediafire.com/?w18wrhux15c3d1w

Hope it's ok with you, China_DemonViper smile.gif

EDIT: Just join the url parts, the full link can't be posted wacko.gif


That's OK ;-), you can redistribute it as you like.
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