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.
The nominal sample rate is 54MHz÷1124, rather than 54MHz÷1125. This is reflected in the frame duration of the standard equipment test.

A 15kHz white screen was displayed to induce audible noise.

ASUS PRIME X570-PRO

Using ALC1220 (S1220A).

This sound card serve as our analog reference.

• Difference
• Nintendo Stereo AV Cable DOL-CPU-11
  Nintendo Stereo AV Cable
  ^DOL-CPU-11
• Nintendo Stereo AV Cable DOL-CPU(P)-10
  Nintendo Stereo AV Cable
  ^{DOL-CPU(P)-10}
• Generic S-Video Cable DOL-CPU-11
  Generic S-Video Cable
  ^DOL-CPU-11
• HD Retrovision SNES Component Cable DOL-CPU(P)-10
  HD Retrovision SNES Component Cable
  ^{DOL-CPU(P)-10}
• Bitfunx GameCube Component Cable
  Bitfunx GameCube Component Cable
• GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter
  GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter
• GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter Sample Rate Hack
  GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter
  ^{Sample Rate Hack}

Source	Difference	Noise floor	Time spectrogram
Nintendo Stereo AV Cable DOL-CPU-11	File:DA ALL AVG mdfourier-dac-48000 vs Nintendo Stereo AV Cajyg.png	File:NF SP B Nintendo Stereo AV Caxwc -1Silence.png
Nintendo Stereo AV Cable DOL-CPU(P)-10	File:DA ALL AVG mdfourier-dac-48000 vs Nintendo Stereo AV Caxiq.png	File:NF SP B Nintendo Stereo AV Caulg -1Silence.png
Generic S-Video Cable DOL-CPU-11	File:DA ALL AVG mdfourier-dac-48000 vs Generic S-Video Cabletom.png	File:NF SP B Generic S-Video Cablegwa -1Silence.png
HD Retrovision SNES Component Cable DOL-CPU(P)-10	File:DA ALL AVG mdfourier-dac-48000 vs HD Retrovision SNES Cejl.png	File:NF SP B HD Retrovision SNES Cila -1Silence.png
Bitfunx GameCube Component Cable	File:DA ALL AVG mdfourier-dac-48000 vs Bitfunx GameCube Compbfo.png	File:NF SP B Bitfunx GameCube Compbxh -1Silence.png
GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter	File:DA ALL AVG mdfourier-dac-48000 vs GCVideo-DVI v3.1 + Posqz.png	File:NF SP B GCVideo-DVI v3.1 + Powym -1Silence.png
GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter Sample Rate Hack	File:DA ALL AVG mdfourier-dac-48000 vs GCVideo-DVI v3.1 + Poeoo.png	File:NF SP B GCVideo-DVI v3.1 + Popdf -1Silence.png

Hauppauge WinTV-HVR-1850

Using CX23888.

Its audio input suffer from internal interference.

• Difference
• Nintendo RF Modulator DOL-CPU-11
  Nintendo RF Modulator
  ^DOL-CPU-11
• Nintendo Stereo AV Cable DOL-CPU-11
  Nintendo Stereo AV Cable
  ^DOL-CPU-11
• Generic S-Video Cable DOL-CPU-11
  Generic S-Video Cable
  ^DOL-CPU-11

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 48kHz sample rate is most commonly used by homebrew software and streaming audio in licensed software.
The nominal sample rate is 54MHz÷1124, rather than 54MHz÷1125. This is reflected in the frame duration of the standard equipment test.

A 15kHz white screen was displayed to induce audible noise.

ASUS PRIME X570-PRO

Using ALC1220 (S1220A).

This sound card serve as our analog reference.

• Difference
• Nintendo Stereo AV Cable DOL-CPU-11
  Nintendo Stereo AV Cable
  ^DOL-CPU-11
• Nintendo Stereo AV Cable DOL-CPU(P)-10
  Nintendo Stereo AV Cable
  ^{DOL-CPU(P)-10}
• Generic S-Video Cable DOL-CPU-11
  Generic S-Video Cable
  ^DOL-CPU-11
• HD Retrovision SNES Component Cable DOL-CPU(P)-10
  HD Retrovision SNES Component Cable
  ^{DOL-CPU(P)-10}
• Bitfunx GameCube Component Cable
  Bitfunx GameCube Component Cable
• GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter
  GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter
• GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter Sample Rate Hack
  GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter
  ^{Sample Rate Hack}

Source	Difference	Noise floor	Time spectrogram
Nintendo Stereo AV Cable DOL-CPU-11	File:DA ALL AVG mdfourier-dac-48000 vs Nintendo Stereo AV Cadrx.png	File:NF SP B Nintendo Stereo AV Caswr -1Silence.png
Nintendo Stereo AV Cable DOL-CPU(P)-10	File:DA ALL AVG mdfourier-dac-48000 vs Nintendo Stereo AV Camlz.png	File:NF SP B Nintendo Stereo AV Cavpk -1Silence.png
Generic S-Video Cable DOL-CPU-11	File:DA ALL AVG mdfourier-dac-48000 vs Generic S-Video Cablehvi.png	File:NF SP B Generic S-Video Cableucu -1Silence.png
HD Retrovision SNES Component Cable DOL-CPU(P)-10	File:DA ALL AVG mdfourier-dac-48000 vs HD Retrovision SNES Cyvn.png	File:NF SP B HD Retrovision SNES Clxg -1Silence.png
Bitfunx GameCube Component Cable	File:DA ALL AVG mdfourier-dac-48000 vs Bitfunx GameCube Compyeg.png	File:NF SP B Bitfunx GameCube Compqpd -1Silence.png
GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter	File:DA ALL AVG mdfourier-dac-48000 vs GCVideo-DVI v3.1 + Povjc.png	File:NF SP B GCVideo-DVI v3.1 + Ponzs -1Silence.png
GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter Sample Rate Hack	File:DA ALL AVG mdfourier-dac-48000 vs GCVideo-DVI v3.1 + Pocsl.png	File:NF SP B GCVideo-DVI v3.1 + Ponie -1Silence.png

Hauppauge WinTV-HVR-1850

Using CX23888.

Its audio input suffer from internal interference.

• Difference
• Nintendo RF Modulator DOL-CPU-11
  Nintendo RF Modulator
  ^DOL-CPU-11
• Nintendo Stereo AV Cable DOL-CPU-11
  Nintendo Stereo AV Cable
  ^DOL-CPU-11
• Generic S-Video Cable DOL-CPU-11
  Generic S-Video Cable
  ^DOL-CPU-11

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