Phono Cartridge Response Measurement Script

[Sicaris]

No idea if alternative test records are useful to you guys but I saw this and thought of you:

Used 'Omnidisc' Telarc Digital 1982 Rare 2x LP Test Record Set 10073/74 EX/EX/VG+

shopgoodwill.com

 

[aaaakkkk]

Oops. Ok, will do it again.

Hello! You haven't forgotten about me

 

[morillon]

No idea if alternative test records are useful to you guys but I saw this and thought of you:

Used 'Omnidisc' Telarc Digital 1982 Rare 2x LP Test Record Set 10073/74 EX/EX/VG+

shopgoodwill.com

it won't really have any interest in their games...

 

[JP]

Hello! You haven't forgotten about me

I haven’t

 

[Balle Clorin]

How can I implement this EQ to plot the Denon XG-7001 frequency plot using he script? (250Hz -3db point)

BLUE CURVE IS PROCESSING THE WAVFILE VIA SPICE SIMULATION WITH PROPER NETWORK, Red in unprocessed file showing Denon EQ

 

[JP]

Give me the biquads for it.

 

[Balle Clorin]

note sure how to get that, cannot figure it out, too steep and in the opposite direction

Biquad calculator v3 | EarLevel Engineering

Spoiler: data

.00000000000000e+001 (-1.84931868978478e+001dB,-7.84512041840724e+001°)
2.14354692507259e+001 (-1.90829307838474e+001dB,-7.85646619612469e+001°)
2.29739670999407e+001 (-1.96730362388577e+001dB,-7.86246626293139e+001°)
2.46228882668983e+001 (-2.02632801715540e+001dB,-7.86314265529360e+001°)
2.63901582154579e+001 (-2.08534418412615e+001dB,-7.85849786310362e+001°)
2.82842712474619e+001 (-2.14432991104675e+001dB,-7.84851481151939e+001°)
3.03143313302080e+001 (-2.20326246838016e+001dB,-7.83315698652395e+001°)
3.24900958542494e+001 (-2.26211822978235e+001dB,-7.81236871153565e+001°)
3.48220225318450e+001 (-2.32087228282045e+001dB,-7.78607559088571e+001°)
3.73213196614723e+001 (-2.37949802849620e+001dB,-7.75418514463695e+001°)
4.00000000000000e+001 (-2.43796676726354e+001dB,-7.71658766808900e+001°)
4.28709385014517e+001 (-2.49624727011210e+001dB,-7.67315735837694e+001°)
4.59479341998814e+001 (-2.55430533448885e+001dB,-7.62375375969973e+001°)
4.92457765337966e+001 (-2.61210332641750e+001dB,-7.56822358765016e+001°)
5.27803164309157e+001 (-2.66959971222374e+001dB,-7.50640300141714e+001°)
5.65685424949238e+001 (-2.72674858586337e+001dB,-7.43812039961059e+001°)
6.06286626604159e+001 (-2.78349920104759e+001dB,-7.36319982014883e+001°)
6.49801917084988e+001 (-2.83979552121208e+001dB,-7.28146502572984e+001°)
6.96440450636899e+001 (-2.89557580488762e+001dB,-7.19274435218806e+001°)
7.46426393229445e+001 (-2.95077224913022e+001dB,-7.09687638544875e+001°)
7.99999999999999e+001 (-3.00531071918508e+001dB,-6.99371651145047e+001°)
8.57418770029034e+001 (-3.05911059817065e+001dB,-6.88314434978960e+001°)
9.18958683997627e+001 (-3.11208479577312e+001dB,-6.76507203357430e+001°)
9.84915530675932e+001 (-3.16413995901737e+001dB,-6.63945323331460e+001°)
1.05560632861831e+002 (-3.21517693018408e+001dB,-6.50629274116012e+001°)
1.13137084989848e+002 (-3.26509149573883e+001dB,-6.36565633507439e+001°)
1.21257325320832e+002 (-3.31377546449198e+001dB,-6.21768053525739e+001°)
1.29960383416998e+002 (-3.36111810195540e+001dB,-6.06258175573451e+001°)
1.39288090127380e+002 (-3.40700793017004e+001dB,-5.90066425514624e+001°)
1.49285278645889e+002 (-3.45133487796526e+001dB,-5.73232621885213e+001°)
1.60000000000000e+002 (-3.49399273649433e+001dB,-5.55806327834256e+001°)
1.71483754005807e+002 (-3.53488184105741e+001dB,-5.37846881209499e+001°)
1.83791736799525e+002 (-3.57391186612281e+001dB,-5.19423048855083e+001°)
1.96983106135186e+002 (-3.61100459068221e+001dB,-5.00612271207522e+001°)
2.11121265723663e+002 (-3.64609647078020e+001dB,-4.81499490888292e+001°)
2.26274169979695e+002 (-3.67914085002084e+001dB,-4.62175591913085e+001°)
2.42514650641663e+002 (-3.71010965036922e+001dB,-4.42735510678708e+001°)
2.59920766833995e+002 (-3.73899441542407e+001dB,-4.23276111444192e+001°)
2.78576180254759e+002 (-3.76580662424861e+001dB,-4.03893942900280e+001°)
2.98570557291778e+002 (-3.79057725053667e+001dB,-3.84683004818603e+001°)
3.20000000000000e+002 (-3.81335560196997e+001dB,-3.65732652638541e+001°)
3.42967508011613e+002 (-3.83420753001202e+001dB,-3.47125753374983e+001°)
3.67583473599051e+002 (-3.85321314395470e+001dB,-3.28937180796567e+001°)
3.93966212270373e+002 (-3.87046418995878e+001dB,-3.11232705445176e+001°)
4.22242531447326e+002 (-3.88606126433626e+001dB,-2.94068300487493e+001°)
4.52548339959390e+002 (-3.90011102166606e+001dB,-2.77489852112754e+001°)
4.85029301283327e+002 (-3.91272351612788e+001dB,-2.61533236701200e+001°)
5.19841533667990e+002 (-3.92400978359616e+001dB,-2.46224708319037e+001°)
5.57152360509519e+002 (-3.93407973767514e+001dB,-2.31581529785628e+001°)
5.97141114583556e+002 (-3.94304041941204e+001dB,-2.17612777906094e+001°)
6.39999999999999e+002 (-3.95099461113067e+001dB,-2.04320256952960e+001°)
6.85935016023227e+002 (-3.95803980154748e+001dB,-1.91699462237263e+001°)
7.35166947198101e+002 (-3.96426747269964e+001dB,-1.79740545773143e+001°)
7.87932424540745e+002 (-3.96976266891573e+001dB,-1.68429247020855e+001°)
8.44485062894651e+002 (-3.97460380318711e+001dB,-1.57747762298043e+001°)
9.05096679918779e+002 (-3.97886265566037e+001dB,-1.47675535900453e+001°)
9.70058602566653e+002 (-3.98260452133987e+001dB,-1.38189963861528e+001°)
1.03968306733598e+003 (-3.98588846835491e+001dB,-1.29267007482030e+001°)
1.11430472101904e+003 (-3.98876767339990e+001dB,-1.20881718349117e+001°)
1.19428222916711e+003 (-3.99128980651389e+001dB,-1.13008679728983e+001°)
1.28000000000000e+003 (-3.99349744275646e+001dB,-1.05622371202043e+001°)
1.37187003204645e+003 (-3.99542848326618e+001dB,-9.86974644679985e+000°)
1.47033389439620e+003 (-3.99711657250193e+001dB,-9.22090586155390e+000°)
1.57586484908149e+003 (-3.99859150211077e+001dB,-8.61328630311040e+000°)
1.68897012578930e+003 (-3.99987959485217e+001dB,-8.04453356787679e+000°)
1.81019335983756e+003 (-4.00100406438847e+001dB,-7.51237838476026e+000°)
1.94011720513331e+003 (-4.00198534859938e+001dB,-7.01464337296079e+000°)
2.07936613467196e+003 (-4.00284141547403e+001dB,-6.54924744283987e+000°)
2.22860944203807e+003 (-4.00358804165709e+001dB,-6.11420812521533e+000°)
2.38856445833422e+003 (-4.00423906444827e+001dB,-5.70764224427024e+000°)
2.55999999999999e+003 (-4.00480660854075e+001dB,-5.32776528523955e+000°)
2.74374006409290e+003 (-4.00530128908871e+001dB,-4.97288975089761e+000°)
2.94066778879240e+003 (-4.00573239286124e+001dB,-4.64142275075185e+000°)
3.15172969816298e+003 (-4.00610803930629e+001dB,-4.33186302350522e+000°)
3.37794025157860e+003 (-4.00643532334211e+001dB,-4.04279755630016e+000°)
3.62038671967511e+003 (-4.00672044163809e+001dB,-3.77289793289861e+000°)
3.88023441026661e+003 (-4.00696880405782e+001dB,-3.52091651663643e+000°)
4.15873226934392e+003 (-4.00718513182889e+001dB,-3.28568255207399e+000°)
4.45721888407614e+003 (-4.00737354388423e+001dB,-3.06609825113571e+000°)
4.77712891666844e+003 (-4.00753763269747e+001dB,-2.86113491463168e+000°)
5.11999999999999e+003 (-4.00768053081220e+001dB,-2.66982912788371e+000°)
5.48748012818581e+003 (-4.00780496914818e+001dB,-2.49127905929589e+000°)
5.88133557758480e+003 (-4.00791332805567e+001dB,-2.32464088273568e+000°)
6.30345939632595e+003 (-4.00800768198593e+001dB,-2.16912533819787e+000°)
6.75588050315720e+003 (-4.00808983855014e+001dB,-2.02399444013469e+000°)
7.24077343935023e+003 (-4.00816137265225e+001dB,-1.88855833881538e+000°)
7.76046882053322e+003 (-4.00822365630192e+001dB,-1.76217233693365e+000°)
8.31746453868783e+003 (-4.00827788464333e+001dB,-1.64423406124689e+000°)
8.91443776815229e+003 (-4.00832509867138e+001dB,-1.53418078717353e+000°)
9.55425783333688e+003 (-4.00836620505051e+001dB,-1.43148691288130e+000°)
1.02400000000000e+004 (-4.00840199340079e+001dB,-1.33566157837895e+000°)
1.09749602563716e+004 (-4.00843315137115e+001dB,-1.24624642440120e+000°)
1.17626711551696e+004 (-4.00846027778035e+001dB,-1.16281348539058e+000°)
1.26069187926519e+004 (-4.00848389407105e+001dB,-1.08496321058032e+000°)
1.35117610063144e+004 (-4.00850445429209e+001dB,-1.01232260702822e+000°)
1.44815468787005e+004 (-4.00852235379680e+001dB,-9.44543498411238e-001°)
1.55209376410664e+004 (-4.00853793682151e+001dB,-8.81300893436248e-001°)
1.66349290773757e+004 (-4.00855150308780e+001dB,-8.22291457833896e-001°)
1.78288755363046e+004 (-4.00856331355369e+001dB,-7.67232084062222e-001°)
1.91085156666738e+004 (-4.00857359542298e+001dB,-7.15858553041299e-001°)
2.00000000000000e+004 (-4.00857962239434e+001dB,-6.83952914681945e-001°)

 

[JP]

Filter type should be high shelf, not low pass.

 

[Balle Clorin]

Sorry , I cannot get any of the options to resemble the shapes in post 885. That is the inverse of the high pass recording characteristic shown here.

Biquad calculator v3 | EarLevel Engineering

 

[stereoplay]

Balle,

for the Denon XG-7001 I use the following coefficients at 96KHz SR:

a[0]=1.0;
a[1]=-1.037628e-00;
a[2]=3.778493e-02;
b[0]=9.699928e-01;
b[1]=-9.542500e-01;
b[2]=0.0;

 

[JP]

Balle,

for the Denon XG-7001 I use the following coefficients at 96KHz SR:

a[0]=1.0;
a[1]=-1.037628e-00;
a[2]=3.778493e-02;
b[0]=9.699928e-01;
b[1]=-9.542500e-01;
b[2]=0.0;

Thanks - will try those. Have them for 192k?

 

[stereoplay]

Sadly not, I calculated it only for 96KHz.

 

[Balle Clorin]

Balle,

for the Denon XG-7001 I use the following coefficients at 96KHz SR:

a[0]=1.0;
a[1]=-1.037628e-00;
a[2]=3.778493e-02;
b[0]=9.699928e-01;
b[1]=-9.542500e-01;
b[2]=0.0;

Many thanks,
then I get this= same at the Recorded characteristic, but I thought it should be the inverse to do the correction? . I do not understand well enough how the script works I guess

.

 

[Balle Clorin]

the inverse, Thanks to Stereoplay

A:
0.9966628
-0.9542500
0.0
B:
1.0
-1.037628
0.0378493

 

[Balle Clorin]

the inverse, Thanks to Stereoplay
View attachment 325685

A:
0.9966628
-0.9542500
0.0
B:
1.0
-1.037628
0.0378493

correction to As
0.9699928
-0.9542500
0.0

correction to Bs
1.0
-1.037628
0.03778493

 

[JP]

I wanted a way to depict on the graph which file0norm mode was used, and what the normalization frequency was. This is what I came up with:

 

[Thomas_A]

I don't get it. Was used in what?

 

[Balle Clorin]

Filenorm 0 A small star at norm point, filenorm 1 A colored Line at frequency

 

[JP]

I don't get it. Was used in what?

normalize = Frequency in Hz to set as 0dB in the plot

file0norm = 0 - normalize both files independently
1 - normalize both files to file 0 level

 

[Thomas_A]

Ah, so the "X" depicts what was used?