Philips PSC724 Ultimate Edge

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Rightmark Audio Analyzer 5.3 Continued

 

Rightmark Audio Analyzer 5.3 Continued
The Numbers Continue...


THD + Noise (at -3 dB FS):

Total Harmonic Distortion is defined as "a signal, the ratio of (a) the sum of the powers of all harmonic frequencies above the fundamental frequency to (b) the power of the fundamental frequency."  When a soundcard processes a signal, the output is an amplified version of the input signal plus any distortion that is created during the processes.  Even though some signal processors may add very little distortion to the output, there is always some present.  In the case of the numbers below, the closer the value is to zero, the less distortion and the more accurate the reproduced signal is.

Philips - 16bit/48kHz

Philips - 24bit/48kHz Philips - 24bit/96kHz Philips - 24bit/192kHz

 

SB Audigy 2 ZS - 16bit/48kHz SB Audigy 2 ZS - 24bit/48kHz SB Audigy 2 ZS - 24bit/96kHz

 

Philips PSC724 Ultimate Edge - THD + Noise (at -3 dB FS)

 

16bit/48kHz

24bit/48kHz 24bit/96kHz 24bit/192kHz

Parameter

Left Right Left Right Left Right Left Right
THD, %: 0.040 0.037 0.040 0.037 0.040 0.037 0.042 0.039
THD + Noise, %: 0.043 0.040 0.043 0.041 0.045 0.043 0.045 0.042
THD + Noise (A-weighted), %: 0.053 0.050 0.053 0.050 0.054 0.050 0.056 0.052

 

Sound Blaster Audigy 2 ZS - THD + Noise (at -3 dB FS)

 

16bit/48kHz

24bit/48kHz 24bit/96kHz

Parameter

Left Right Left Right Left Right
THD, %: 0.006 0.007 0.006 0.007 0.003 0.005
THD + Noise, %: 0.008 0.009 0.008 0.009 0.007 0.008
THD + Noise (A-weighted), %: 0.009 0.009 0.008 0.009 0.005 0.007


Intermodulation Distortion:

IMD is the "nonlinear distortion in a system or transducer, characterised by the appearance in the output of frequencies equal to the sums and differences of integral multiples of the two or more component frequencies present in the input waveform." Basically this means that when two signals at difference frequencies are produced simultaneously, additional signals at other frequencies and amplitudes are created.  These new signals are found at the sum, and difference, of the two original frequencies.

So, if the original signals where 2 kHz and 8 kHz, IMD would create two additional signals at 10 kHz ( 2 + 8 = 10) and 6 kHz (8 – 2 = 6).  Of course, it would be too simple of it ended there.  Each of these new signals caused by IMD is able to cascade off of each other and create more IMD of their own. Obviously, this means many other frequencies will be created, thus causing a huge mess of distortion.

Just like the other tests, a lower value signifies less amounts of IMD, thus a better overall sound quality.

 

Philips - 16bit/48kHz

Philips - 24bit/48kHz Philips - 24bit/96kHz Philips - 24bit/192kHz

 

SB Audigy 2 ZS - 16bit/48kHz SB Audigy 2 ZS - 24bit/48kHz SB Audigy 2 ZS - 24bit/96kHz

 

 

Philips PSC724 Ultimate Edge - Intermodulation Distortion

 

16bit/48kHz

24bit/48kHz 24bit/96kHz 24bit/192kHz

Parameter

Left Right Left Right Left Right Left Right
IMD + Noise, %: 0.059 0.056 0.059 0.057 0.059 0.056 0.060 0.057
IMD + Noise (A-weighted), %: 0.055 0.052 0.055 0.053 0.055 0.052 0.056 0.053

 

Sound Blaster Audigy 2 ZS - Intermodulation Distortion

 

16bit/48kHz

24bit/48kHz 24bit/96kHz

Parameter

Left Right Left Right Left Right
IMD + Noise, %: 0.008 0.009 0.008 0.009 0.009 0.010
IMD + Noise (A-weighted), %: 0.007 0.007 0.006 0.007 0.004 0.005


Stereo Crosstalk:

Stereo Crosstalk is when "undesired signals or sounds, as of voices, in a telephone or other communications device as a result of coupling between transmission circuits."  In the case of the soundcard, it is when a signal that is meant for the left channel, ends up being partially outputted on the right (or vice versa).  Subsequently, this disrupts the stereo imaging and overall sound field.  Obviously in this case, the less crosstalk (lower the value) the better.

Philips - 16bit/48kHz

Philips - 24bit/48kHz Philips - 24bit/96kHz Philips - 24bit/192kHz
SB Audigy 2 ZS - 16bit/48kHz SB Audigy 2 ZS - 24bit/48kHz SB Audigy 2 ZS - 24bit/96kHz

 

Philips PSC724 Ultimate Edge - Stereo Crosstalk

 

16bit/48kHz

24bit/48kHz 24bit/96kHz 24bit/192kHz

Parameter

L <- R L -> R L <- R L -> R L <- R L -> R L <- R L -> R
Crosstalk at 100 Hz, dB: -78 -83 -78 -79 -79 -77 -72 -75
Crosstalk at 1 kHz, dB: -60 -63 -60 -63 -60 -63 -59 0.-63
Crosstalk at 10 kHz, dB: -40 -44 -40 -44 -40 -44 -40 -44

 

Sound Blaster Audigy 2 ZS - Stereo Crosstalk

 

16bit/48kHz

24bit/48kHz 24bit/96kHz

Parameter

L <- R L -> R L <- R L -> R L <- R L -> R
Crosstalk at 100 Hz, dB: -82 -84 -82 -85 -80 -83
Crosstalk at 1 kHz, dB: -84 -86 -84 -86 -84 -88
Crosstalk at 10 kHz, dB: -75 -76 -75 -76 -75 -76

 

Tags:  C7, mat, EDGE, Philips, ultimate, IPS, TIM, ULT, Ultima, IP, IM

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