Olika fabrikat - Tester av ljudkort

Här nedan lägger jag upp länkar till tester av ljudkort. Det är viktigt att veta sin dators ljudkorts prestanda vid ljudmätningar med diverse olika programvara. En del av programvaran man mäter med har ingen möjlighet att kalibrera kurvorna då är det än mer viktigt att använda rätt hårdvara. En del länkar kan sluta fungera i så fall går det bra att meddelad et men en kommentar här under.

Philips Acoustic Edge (PCS706)

Zoltrix Nightingale PRO 6 (C-Media CMI8738-6ch)

http://audio.rightmark.org/test/c-media-8738-1644.html
http://audio.rightmark.org/test/c-media-8738-1648.html
http://audio.rightmark.org/test/c-media-8738-2496.html

Creamware Scope DP

http://audio.rightmark.org/test/creamware/scope44.htm
http://audio.rightmark.org/test/creamware/scope96.htm

Digidesign MBOX

Det ser ut som om den har problem med klippning.
http://audio.rightmark.org/test/digidesign/mbox.htm

Digidesign MIX

http://audio.rightmark.org/test/digidesign/mix.htm
http://audio.rightmark.org/test/digidesign/mix2448.htm

Echo Audio Gina 24

http://audio.rightmark.org/test/event-gina/Event%20Gina%202496.htm

ESI Waveterminal 192x

http://audio.rightmark.org/test/esi-wt192x/esi-waveterminal192x-1644.html
http://audio.rightmark.org/test/esi-wt192x/esi-waveterminal192x-1648.html
http://audio.rightmark.org/test/esi-wt192x/esi-waveterminal192x-2444.html
http://audio.rightmark.org/test/esi-wt192x/esi-waveterminal192x-2496.html
http://audio.rightmark.org/test/esi-wt192x/esi-waveterminal192x-24192.html

Hoontech Audio DSP24 Value

http://audio.rightmark.org/test/hoontech/hoontech-dsp24-mk2-1644.html
http://audio.rightmark.org/test/hoontech/hoontech-dsp24-mk2-1648.html
http://audio.rightmark.org/test/hoontech/hoontech-dsp24-mk2-2496.html

Lynx TWO-B

http://audio.rightmark.org/test/lynx-two-b-1644.html
http://audio.rightmark.org/test/lynx-two-b-1648.html
http://audio.rightmark.org/test/lynx-two-b-2496.html
http://audio.rightmark.org/test/lynx-two-b-32192.html

Roland UA-30

http://audio.rightmark.org/test/roland/ua301644.htm
http://audio.rightmark.org/test/roland/ua302496.htm

headphones
http://audio.rightmark.org/test/roland/ua301644h.htm
http://audio.rightmark.org/test/roland/ua302496h.htm

RME DIGI96/8 PST

analog loopback
http://audio.rightmark.org/test/rme/digi968pst/digi1644.htm
http://audio.rightmark.org/test/rme/digi968pst/digi1648.htm
http://audio.rightmark.org/test/rme/digi968pst/digi3244.htm
http://audio.rightmark.org/test/rme/digi968pst/digi3296.htm

S/PDIF digital loopback
Wooow!!!
http://audio.rightmark.org/test/rme/digi968pst/digi1644d.htm
http://audio.rightmark.org/test/rme/digi968pst/digi1648d.htm

Gravis Ultrasound

“I tested the sample output of Gravis ultrasound card at 44.1 kHz output sample rate and 16 bit resolution. I tested only the line output. Here are the results of the measurement in the graph below. As you can see, Gravis Ultrasound performance is very good at high frequencies. The ouput level starts to fall at about 4 kHz and it has fallen 3 dB at 10 kHz and 9 dB at 20 kHz. This performance figure is not HiFi quality. ”

“I also tested how good GUS is in digitizing and playing back sampled data. Basic GUS has only 8 bit resolution in digitizing, so that it not useful for anything real audio processing. But for some purposes it is still useful to know the total frequency response (this is usually measured in computer magazine tests). I measured the record and output frequency response using line input an line output lines. I sended reference signal to line input, digitized it using sampling program (at 44.1 kHz sample rate) and then played it back and cheked the output level. ”

Källa:
http://www.epanorama.net

SoundBlaster 16

“This performance is measure from SB16 sound card 1994 model.”

Sound Blaster 16 Value Edition PnP

The frequency response is straight from 20 Hz to 15 kHz with +-0.3 dB, which is very good value. The frequency response starts to drop at frequencies above 15 kHz and drops up to 3 dB at 20 kHz frequency. This frequency response is quite good. I also tested the THD distortion at 400 Hz frequency and signal levels on 0.78 Vrms input and output and I got THD+noise value 0.03% which is quite good. The FFT spectrum which shows out the harmonics could still be better.

Microphone signals
I used the same method for microphone line testing as for line level signals. The difference is that I used lower signal level (0.078 Vrms) for microphone to avoid overloading the microphone preamplifier. Microphone input in Sound Blaster soundcards is mono and it has one special feature: there is some power (5.2VDC feed through 2.2 kohm resistor) available in microphone connector for electret microphone capsule. I did not need that power because I used Nakamichi as the signal source. Nakamichi had 600 ohm output impedance, which is also the value specified for soundblaster microphone. In the figure below you can see the results.

Sound Blaster AWE32

1994
These performance figures are measured from AWE32 sold 1994.
Bild

Soundblaster 16 Basic

1996
Accoring a newer test I saw in Tietokone magazine 1996, the frequency response in AWE32 has changed. The high frequency response has been become better, but the bass response have become worse: Bass response starts to drop at 200 Hz and drops 6..12 dB at 20 Hz depending on the input/output combinations. So the frequency response in new AWE32 cards is quite the same like in old SB16 cards:
Bild

Sound Blaster 32

1997
Microphone input frequency response

Output frequency response
The frequency response is very flat from 40 Hz to 20 Khz. In frequencies below 40 Hz the frequency response starts to drop a little bit (it has dropped 3 dB at 20 Hz frequency). So lowest bass frequencies are a little bit attenuated.

Using SB32 as audio recoder
Frequency response of the card input and output. The measurements are made so that the audio is recorded with the soundcard and played back. The chart shows the real signal levels measured from the card output (maximim level I got with the settings used during this test was around -9 dBV which is quite typical signal level used in home audio systems).

Olika fabrikat – Tester av ljudkort

Audiotrak ProDigy 192

Creative Audigy (SB0090, Audigy aka EMU10K2)

Creative Audigy Platinum EX

Creative Extigy

Creative SoundBlaster Live! 5.1 Player (SB0060, EMU10K1)