| Summary | ||||
|---|---|---|---|---|
| Parameter | My Opinion |
Mode of Operation | ||
| Full Duplex
Loop Back |
Analog > Digital | Digital > Analog | ||
| Frequency Response | Poor | 20-20kHz +0.0, -5.2 dB | 20-20kHz +0.0/-2.9 dB | 30-20kHz +0.0/- 2 dB |
| 1 kHz Total Harmonic Distortion | Good | 0.06% @ -0.5 dB | 0.05% @ 0 dB | 0.05% @ -0 dB |
| 20 Hz Total Harmonic Distortion | Poor | 1.6% @ -2.5 dB | 0.25% @ -1.0 dB | 0.90% @ -1.8 dB |
| Signal to Noise Ratio | Poor | 62 dB | 63 dB | 64 dB |
| 19 & 20 kHz Intermodulation Distortion | Poor | 0.26% @ -7.5 dB | 0.06% @ -1.8 dB | 0.23% @-5.4 dB |
| Dynamic Range | Good | 72 dB | 69 dB | 81 dB |
| Response to Data = Silence | Poor | -65 dB | -68 dB | -67 dB |
| Jitter Distortion | Poor | -55 dB | -59 dB | -58 dB |
| Software & Hardwre used in test: | Windows98 build 1998, ESS 1938S Chipset on Asus P5A Motherboard Driver Release: 4.05.00.1068 (10/2/98), Layla Software release 4.0.0, Spectra Lab data analysis software release 4.32.14 | |||
* Test software erroniously reports distortion as noise.
Reference voltage: 1.0 volts.
ESS 1938S Chipset on Asus P5A Motherboard Sound Card Frequency response (Full Duplex - Loop Back) 
ESS 1938S Chipset on Asus P5A Motherboard Sound Card Frequency response (Full Duplex - Loop Back) ESS 1938S Chipset on Asus P5A Motherboard Sound Card 1 kHz Total Harmonic Distortion and Noise (Full Duplex -Loop Back) 
ESS 1938S Chipset on Asus P5A Motherboard Sound Card 1 kHz Total Harmonic Distortion and Noise (Full Duplex -Loop Back) ESS 1938S Chipset on Asus P5A Motherboard Sound Card 20 Hz Total Harmonic Distortion and Noise (Full Duplex -Loop Back) 
ESS 1938S Chipset on Asus P5A Motherboard Sound Card 20 Hz Total Harmonic Distortion and Noise (Full Duplex -Loop Back) ESS 1938S Chipset on Asus P5A Motherboard Sound Card Residual Noise - (Dynamic Range) (Full Duplex - Loop Back) 
ESS 1938S Chipset on Asus P5A Motherboard Sound Card Residual Noise - (Dynamic Range) (Full Duplex - Loop Back) ESS 1938S Chipset on Asus P5A Motherboard Sound Card Residual Noise - (Data = Silence) (Full Duplex - Loop Back) 
ESS 1938S Chipset on Asus P5A Motherboard Sound Card Residual Noise - (Data = Silence) (Full Duplex - Loop Back) ESS 1938S Chipset on Asus P5A Motherboard Sound Card IM Distortion (Full Duplex - Loop Back) 
ESS 1938S Chipset on Asus P5A Motherboard Sound Card IM Distortion; (Full Duplex - Loop Back) ESS 1938S Chipset on Asus P5A Motherboard Sound Card FM Distortion - "Jitter" (Full Duplex - Loop Back) 
ESS 1938S Chipset on Asus P5A Motherboard Sound Card FM Distortion - "Jitter" (Full Duplex - Loop Back) ESS 1938S Chipset on Asus P5A Motherboard Sound Card Frequency Response, Analog to Digital 
ESS 1938S Chipset on Asus P5A Motherboard Sound Card Frequency Response, Analog to Digital ESS 1938S Chipset on Asus P5A Motherboard Sound Card 20 Hz Total Harmonic Distortion and Noise Analog Input to Digital 
ESS 1938S Chipset on Asus P5A Motherboard Sound Card 20 Hz Total Harmonic Distortion and Noise Analog Input to Digital ESS 1938S Chipset on Asus P5A Motherboard Sound Card 1 KHz Total Harmonic Distortion and Noise, Analog to Digital 
ESS 1938S Chipset on Asus P5A Motherboard Sound Card Total Harmonic Distortion and Noise, Analog to Digital ESS 1938S Chipset on Asus P5A Motherboard Sound Card Residual Noise - (Data = Silence) (Full Duplex - Loop Back) 
ESS 1938S Chipset on Asus P5A Motherboard Sound Card Residual Noise - (Data = Silence) (Full Duplex - Loop Back) ESS 1938S Chipset on Asus P5A Motherboard Sound Card Intermodulation, Analog to Digital 
ESS 1938S Chipset on Asus P5A Motherboard Sound Card Intermodulation, Analog to Digital ESS 1938S Chipset on Asus P5A Motherboard Sound Card Residual Noise - (Dynamic Range), Analog to Digital 
ESS 1938S Chipset on Asus P5A Motherboard Sound Card Residual Noise - (Dynamic Range), Analog to Digital ESS 1938S Chipset on Asus P5A Motherboard Sound Card Jitter, Analog to Digital 
ESS 1938S Chipset on Asus P5A Motherboard Sound Card Jitter, Analog to Digital ESS 1938S Chipset on Asus P5A Motherboard Sound Card Frequency Response, Digital to Analog 
ESS 1938S Chipset on Asus P5A Motherboard Sound Card Frequency Response, Digital to Analog ESS 1938S Chipset on Asus P5A Motherboard Sound Card 1 KHz Total Harmonic Distortion and Noise, Digital to Analog 
ESS 1938S Chipset on Asus P5A Motherboard Sound Card 1 K HzTotal Harmonic Distortion and Noise, Digital to Analog ESS 1938S Chipset on Asus P5A Motherboard Sound Card 20 Hz Total Harmonic Distortion and Noise, Digital to Analog 
ESS 1938S Chipset on Asus P5A Motherboard Sound Card 20 Hz Total Harmonic Distortion and Noise, Digital to Analog ESS 1938S Chipset on Asus P5A Motherboard Sound Card Residual Noise - (Data = Silence) (Full Duplex - Loop Back) 
ESS 1938S Chipset on Asus P5A Motherboard Sound Card Residual Noise - (Data = Silence) (Full Duplex - Loop Back) ESS 1938S Chipset on Asus P5A Motherboard Sound Card Intermodulation, Digital to Analog 
ESS 1938S Chipset on Asus P5A Motherboard Sound Card Intermodulation, Digital to Analog ESS 1938S Chipset on Asus P5A Motherboard Sound Card Residual Noise - (Dynamic Range), Digital to Analog 
ESS 1938S Chipset on Asus P5A Motherboard Sound Card Residual Noise - (Dynamic Range), Digital to Analog ESS 1938S Chipset on Asus P5A Motherboard Sound Card Jitter, Digital to Analog 
ESS 1938S Chipset on Asus P5A Motherboard Sound Card Jitter, Digital to Analog
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