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

  Nintendo Stereo AV Cable
  ^DOL-CPU-11

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

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

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

  Generic S-Video Cable
  ^DOL-CPU-11

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

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

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

  Bitfunx GameCube Component Cable
  ^{Swapped L/R}

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

  GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter
  ^{DC Offset}

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

  GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter
  ^{DC Offset + 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 Swapped L/R	200px	200px
GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter DC Offset	200px	200px
GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter DC Offset + Sample Rate Hack	200px	200px

Blackmagic Intensity Shuttle

Using CS42526 and ADV7604.

Hauppauge WinTV-HVR-1850

Using CX23888.

Its audio input suffer from internal interference.

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

  Nintendo RF Modulator
  ^DOL-CPU-11

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

  Nintendo Stereo AV Cable
  ^DOL-CPU-11

• DA ALL AVG mdfourier-dac-48000-fydg vs Generic S-Video Cableooa.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 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
• DA ALL AVG mdfourier-dac-48000-fnvw vs Nintendo Stereo AV Cagdg.png

  Nintendo Stereo AV Cable
  ^DOL-CPU-11

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

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

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

  Generic S-Video Cable
  ^DOL-CPU-11

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

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

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

  Bitfunx GameCube Component Cable
  ^{Swapped L/R}

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

  GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter
  ^{DC Offset}

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

  GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter
  ^{DC Offset + 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 Swapped L/R	200px	200px
GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter DC Offset	200px	200px
GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter DC Offset + Sample Rate Hack	200px	200px

Blackmagic Intensity Shuttle

Using CS42526 and ADV7604.

Hauppauge WinTV-HVR-1850

Using CX23888.

Its audio input suffer from internal interference.

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

  Nintendo RF Modulator
  ^DOL-CPU-11

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

  Nintendo Stereo AV Cable
  ^DOL-CPU-11

• DA ALL AVG mdfourier-dac-48000-fywk vs Generic S-Video Cableirx.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