Audio quality tests
32kHz sample rate
Using MDFourier 1.07d (15-12-2021) with this reference file.
The 32kHz sample rate is most commonly used by licensed software. It is upsampled to 48kHz in hardware prior to final output.
A 15kHz white screen was displayed to induce audible noise.
ASUS PRIME X570-PRO
Using ALC1220 (S1220A).
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Hauppauge WinTV-HVR-1850
Using CX23888.
| Source | Difference | Noise floor | Time spectrogram |
|---|---|---|---|
| Nintendo RF Modulator DOL-CPU-11 |
File:DA ALL AVG mdfourier-dac-48000 vs Nintendo RF Modulatorqxl.png | File:NF SP B Nintendo RF Modulatorvhh -1Silence.png | 
|
| Nintendo Stereo AV Cable DOL-CPU-11 |
File:DA ALL AVG mdfourier-dac-48000 vs Nintendo Stereo AV Cafwu.png | File:NF SP B Nintendo Stereo AV Carkb -1Silence.png | 
|
| Generic S-Video Cable DOL-CPU-11 |
File:DA ALL AVG mdfourier-dac-48000 vs Generic S-Video Cableczp.png | File:NF SP B Generic S-Video Cablefmb -1Silence.png | 
|
48kHz sample rate
Using MDFourier 1.07d (15-12-2021) with this reference file.
The nominal sample rate is 54MHz÷1124, rather than 54MHz÷1125. This is reflected in the frame duration of the standard equipment test.
The 48kHz sample rate is most commonly used by homebrew software and streaming audio in licensed software.
A 15kHz white screen was displayed to induce audible noise.
ASUS PRIME X570-PRO
Using ALC1220 (S1220A).
.png)
.png)
Hauppauge WinTV-HVR-1850
Using CX23888.
| Source | Difference | Noise floor | Time spectrogram |
|---|---|---|---|
| Nintendo RF Modulator DOL-CPU-11 |
File:DA ALL AVG mdfourier-dac-48000 vs Nintendo RF Modulatorrzn.png | File:NF SP B Nintendo RF Modulatorvse -1Silence.png | 
|
| Nintendo Stereo AV Cable DOL-CPU-11 |
File:DA ALL AVG mdfourier-dac-48000 vs Nintendo Stereo AV Caifm.png | File:NF SP B Nintendo Stereo AV Cairq -1Silence.png | 
|
| Generic S-Video Cable DOL-CPU-11 |
File:DA ALL AVG mdfourier-dac-48000 vs Generic S-Video Cablebib.png | File:NF SP B Generic S-Video Cablelgk -1Silence.png | 
|
