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).

This sound card serve as our analog reference.

• Difference
• DA ALL AVG mdfourier-dac-48000 vs Nintendo Stereo AV Cajyg.png

  Nintendo Stereo AV Cable
  ^DOL-CPU-11

• DA ALL AVG mdfourier-dac-48000 vs Nintendo Stereo AV Caxiq.png

  Nintendo Stereo AV Cable
  ^{DOL-CPU(P)-10}

• DA ALL AVG mdfourier-dac-48000 vs Generic S-Video Cabletom.png

  Generic S-Video Cable
  ^DOL-CPU-11

• DA ALL AVG mdfourier-dac-48000 vs HD Retrovision SNES Cejl.png

  HD Retrovision SNES Component Cable
  ^{DOL-CPU(P)-10}

• DA ALL AVG mdfourier-dac-48000 vs Bitfunx GameCube Compbfo.png

  Bitfunx GameCube Component Cable

• DA ALL AVG mdfourier-dac-48000 vs GCVideo-DVI v3.1 + Posqz.png

  GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter

• DA ALL AVG mdfourier-dac-48000 vs GCVideo-DVI v3.1 + Poeoo.png

  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	200px	200px
Nintendo Stereo AV Cable DOL-CPU(P)-10	200px	200px
Generic S-Video Cable DOL-CPU-11	200px	200px
HD Retrovision SNES Component Cable DOL-CPU(P)-10	200px	200px
Bitfunx GameCube Component Cable	200px	200px
GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter	200px	200px
GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter Sample Rate Hack	200px	200px

Hauppauge WinTV-HVR-1850

Using CX23888.

Its audio input suffer from internal interference.

• Difference
• DA ALL AVG mdfourier-dac-48000 vs Nintendo RF Modulatorqxl.png

  Nintendo RF Modulator
  ^DOL-CPU-11

• DA ALL AVG mdfourier-dac-48000 vs Nintendo Stereo AV Cafwu.png

  Nintendo Stereo AV Cable
  ^DOL-CPU-11

• DA ALL AVG mdfourier-dac-48000 vs Generic S-Video Cableczp.png

  Generic S-Video Cable
  ^DOL-CPU-11

Source	Difference	Noise floor	Time spectrogram
Nintendo RF Modulator DOL-CPU-11	200px	200px
Nintendo Stereo AV Cable DOL-CPU-11	200px	200px
Generic S-Video Cable DOL-CPU-11	200px	200px

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).

This sound card serve as our analog reference.

• Difference
• DA ALL AVG mdfourier-dac-48000 vs Nintendo Stereo AV Cadrx.png

  Nintendo Stereo AV Cable
  ^DOL-CPU-11

• DA ALL AVG mdfourier-dac-48000 vs Nintendo Stereo AV Camlz.png

  Nintendo Stereo AV Cable
  ^{DOL-CPU(P)-10}

• DA ALL AVG mdfourier-dac-48000 vs Generic S-Video Cablehvi.png

  Generic S-Video Cable
  ^DOL-CPU-11

• DA ALL AVG mdfourier-dac-48000 vs HD Retrovision SNES Cyvn.png

  HD Retrovision SNES Component Cable
  ^{DOL-CPU(P)-10}

• DA ALL AVG mdfourier-dac-48000 vs Bitfunx GameCube Compyeg.png

  Bitfunx GameCube Component Cable

• DA ALL AVG mdfourier-dac-48000 vs GCVideo-DVI v3.1 + Povjc.png

  GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter

• DA ALL AVG mdfourier-dac-48000 vs GCVideo-DVI v3.1 + Pocsl.png

  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	200px	200px
Nintendo Stereo AV Cable DOL-CPU(P)-10	200px	200px
Generic S-Video Cable DOL-CPU-11	200px	200px
HD Retrovision SNES Component Cable DOL-CPU(P)-10	200px	200px
Bitfunx GameCube Component Cable	200px	200px
GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter	200px	200px
GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter Sample Rate Hack	200px	200px

Hauppauge WinTV-HVR-1850

Using CX23888.

Its audio input suffer from internal interference.

• Difference
• DA ALL AVG mdfourier-dac-48000 vs Nintendo RF Modulatorrzn.png

  Nintendo RF Modulator
  ^DOL-CPU-11

• DA ALL AVG mdfourier-dac-48000 vs Nintendo Stereo AV Caifm.png

  Nintendo Stereo AV Cable
  ^DOL-CPU-11

• DA ALL AVG mdfourier-dac-48000 vs Generic S-Video Cablebib.png

  Generic S-Video Cable
  ^DOL-CPU-11

Source	Difference	Noise floor	Time spectrogram
Nintendo RF Modulator DOL-CPU-11	200px	200px
Nintendo Stereo AV Cable DOL-CPU-11	200px	200px
Generic S-Video Cable DOL-CPU-11	200px	200px