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Topic: Channel equalizer DSP? (Read 8358 times) previous topic - next topic
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Channel equalizer DSP?

Hi everyone,

I am noticing that my L/R ear do not perceive all frequencies in the same way, hence most of my music is slightly off centre.

Can anyone suggest an equalizer DSP for foobar 0.9 to adjust L/R channel separately? If no such DSP exists, then perhaps a DSP with the simple L/R balance adjustment would do.

Also, I would like to get your opinions/suggestions on the following chain of DSPs for recoding stereo into stereo for headphones (in-ear-canal ones).

Where in the chain would you put the Balance/Equalizer DSP?

Stage 1: Resampler 96k + Channel mixer 6 channels + Dolby headphone wrapper + Advanced Limiter + RG calculation
Stage 2: Album RG (apply gain only) with +7db preamp (for mobile player) + Advanced limiter + Resampler 44k

Any suggestions for optimal Channel Mixer settings are welcome.

Thank you in advance for your help

Channel equalizer DSP?

Reply #1 –
Quote from: genekh on
Can anyone suggest an equalizer DSP for foobar 0.9 to adjust L/R channel separately? If no such DSP exists, then perhaps a DSP with the simple L/R balance adjustment would do.

You can do it with convolver 

Quote from: genekh on
Where in the chain would you put the Balance/Equalizer DSP?

Stage 1: Resampler 96k + Channel mixer 6 channels + Dolby headphone wrapper + Advanced Limiter + RG calculation
Stage 2: Album RG (apply gain only) with +7db preamp (for mobile player) + Advanced limiter + Resampler 44k

Just before advanced limiter
And maybe it's better to swap "Advanced limiter" and "Resampler 44k" ? I mean: Album RG (apply gain only) with +7db preamp (for mobile player) + Resampler 44k + Convolver + Advanced limiter.
 

Channel equalizer DSP?

Reply #2 –
Quote from: lvqcl on
You can do it with convolver 


Good idea!

2 questions:
1) Can it also replace the channel mixer + dolby headphones?
2) How do I create those left and right convolution files to match my hearing?

Quote from: lvqcl on
Quote from: genekh on
Where in the chain would you put the Balance/Equalizer DSP?

Stage 1: Resampler 96k + Channel mixer 6 channels + Dolby headphone wrapper + Advanced Limiter + RG calculation
Stage 2: Album RG (apply gain only) with +7db preamp (for mobile player) + Advanced limiter + Resampler 44k

Just before advanced limiter
And maybe it's better to swap "Advanced limiter" and "Resampler 44k" ? I mean: Album RG (apply gain only) with +7db preamp (for mobile player) + Resampler 44k + Convolver + Advanced limiter.


Why after resampler? - I put the 1st resampler in to increase precision, then the second resamplerat the end  to bring it back to CD quality when all DSPs have done their job

Channel equalizer DSP?

Reply #3 –
Quote from: genekh on
2 questions:
1) Can it also replace the channel mixer + dolby headphones?
2) How do I create those left and right convolution files to match my hearing?

1) Don't know. Are these DSP linear (and time-invariant)?
2) Any way you like  BTW, Winamp has DSP plugin dsp_supereq, that can adjust L/R channels separately.

Quote from: genekh on
Why after resampler? - I put the 1st resampler in to increase precision, then the second resampler at the end  to bring it back to CD quality when all DSPs have done their job

If all files that pass through convolver have the same frequency (96 kHz) - of course, convolver can be before resampler.

Channel equalizer DSP?

Reply #4 –
Quote from: lvqcl on
Quote from: genekh on


2) How do I create those left and right convolution files to match my hearing?


2) Any way you like  BTW, Winamp has DSP plugin dsp_supereq, that can adjust L/R channels separately.


Well, upon reading on convolver I am not entirely sure what its methodology is, i.e. how impulse files are applied to the audio track - hence I am not sure how to create a desired effect with the convolver -  perhaps someone can point me to a good guide

RE: Winamp dsp - I can then use the winamp wrapper + winamp supereq, I suppose

Channel equalizer DSP?

Reply #5 –
I'm sorry, but doing this with Convolver is laaaaaaaaame. That's kind of like saying "you can do this if you write your own fb2k plugin!"

Are there any free VST plugs which can do this?

Channel equalizer DSP?

Reply #6 –
Foo_crossover can do those things, but it seems doesn't work with last version.

YS

Rozzo

Channel equalizer DSP?

Reply #7 –
Quote
Foo_crossover can do those things, but it seems doesn't work with last version.

Do you mean foo_dsp_xover (http://xover.sourceforge.net/) ?
Try this.

Channel equalizer DSP?

Reply #8 –
Has the OP tried the Winamp DSP Bridge plugin with Shibatch EQ? It's not a very elegant solution as I don't think you can configure it in real-time when bolted on the side of Foobar2000, but it's an 18-band discrete L/R equaliser nonetheless. This process may involve installing Winamp to get access to its plugins. I have it installed already so I wouldn't know about that.

Cheers, Slipstreem. 

Channel equalizer DSP?

Reply #9 –
Quote from: lvqcl on
Do you mean foo_dsp_xover (http://xover.sourceforge.net/) ?
Try this.
better not.

not that only it isn't working, but it crashes foobar very bad.

maybe another recompile

it crashed foobar when i try to add xover in dsp chain
i had to manually end foobar process
don't remember circumstances, but it was vista sp1 and i didn't try twice knowing that it was recompile

that was the first time i tried
trying now it's ok somehow
sorry for misleading