Audio quality tests

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Revision as of 11:20, 27 May 2022 by Extrems (talk | contribs)
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Disclosures

  • EON GCHD Mk-II was provided by EON Gaming.
  • HD Retrovision SNES Component Cable was provided by HD Retrovision.
  • Insurrection Industries CARBY was provided by Insurrection Industries.
  • Retro-Bit Retro Prism Component Cable was provided by CastleMania Games.
  • RetroTINK-5X Pro was provided by RetroTINK.

32kHz sample rate

Using MDFourier 1.08 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 & ProArt X570-CREATOR WIFI

Using ALC1220 (S1220A).

This sound card serve as our analog reference.

  • Difference
  • Nintendo Stereo AV Cable With DOL-CPU-11
    Nintendo Stereo AV Cable
    With DOL-CPU-11
  • Nintendo Stereo AV Cable With DOL-CPU(P)-10
    Nintendo Stereo AV Cable
    With DOL-CPU(P)-10
  • Generic S-Video Cable With DOL-CPU-11
    Generic S-Video Cable
    With DOL-CPU-11
  • HD Retrovision SNES Component Cable With DOL-CPU(P)-10
    HD Retrovision SNES Component Cable
    With DOL-CPU(P)-10
  • Bitfunx/Kaico GameCube Component Cable Swapped L/R
    Bitfunx/Kaico GameCube Component Cable
    Swapped L/R
  • GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter DC Offset
    GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter
    DC Offset
  • GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter DC Offset + Sample Rate Hack
    GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter
    DC Offset + Sample Rate Hack
  • Retro-Bit Retro Prism Component Cable Swapped L/R
    Retro-Bit Retro Prism Component Cable
    Swapped L/R
Source Difference Noise floor Time spectrogram
CVBS Nintendo Stereo AV Cable
With DOL-CPU-11
CVBS Nintendo Stereo AV Cable
With DOL-CPU(P)-10
Y/C Generic S-Video Cable
With DOL-CPU-11
RGBCVS HD Retrovision SNES Component Cable
With DOL-CPU(P)-10
YPBPR Bitfunx/Kaico GameCube Component Cable
Swapped L/R
YPBPR GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter
DC Offset
YPBPR GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter
DC Offset + Sample Rate Hack [1]
YPBPR Retro-Bit Retro Prism Component Cable
Swapped L/R
  1. ↑ https://github.com/ikorb/gcvideo/blob/main/Firmware/README.md#advanced-settings

Blackmagic Intensity Shuttle

Using CS42526 and ADV7604.

  • Difference
  • Nintendo Stereo AV Cable With DOL-CPU-11
    Nintendo Stereo AV Cable
    With DOL-CPU-11
  • Nintendo Stereo AV Cable With DOL-CPU(P)-10
    Nintendo Stereo AV Cable
    With DOL-CPU(P)-10
  • Generic S-Video Cable With DOL-CPU-11
    Generic S-Video Cable
    With DOL-CPU-11
  • Hyperkin 3-in-1 HDTV Cable With DOL-CPU-11
    Hyperkin 3-in-1 HDTV Cable
    With DOL-CPU-11
  • HD Retrovision SNES Component Cable With DOL-CPU(P)-10
    HD Retrovision SNES Component Cable
    With DOL-CPU(P)-10
  • Bitfunx/Kaico GameCube Component Cable Swapped L/R
    Bitfunx/Kaico GameCube Component Cable
    Swapped L/R
  • Retro-Bit Retro Prism Component Cable Swapped L/R
    Retro-Bit Retro Prism Component Cable
    Swapped L/R
  • GCVideo-DVI v3.1
    GCVideo-DVI v3.1
  • GCVideo-DVI v3.1 Sample Rate Hack
    GCVideo-DVI v3.1
    Sample Rate Hack
Source Difference Noise floor Time spectrogram
CVBS Nintendo Stereo AV Cable
With DOL-CPU-11
CVBS Nintendo Stereo AV Cable
With DOL-CPU(P)-10
Y/C Generic S-Video Cable
With DOL-CPU-11
Y/C Hyperkin 3-in-1 HDTV Cable
With DOL-CPU-11
RGBCVS HD Retrovision SNES Component Cable
With DOL-CPU(P)-10
YPBPR Bitfunx/Kaico GameCube Component Cable
Swapped L/R
YPBPR Retro-Bit Retro Prism Component Cable
Swapped L/R
TMDS GCVideo-DVI v3.1
TMDS GCVideo-DVI v3.1
Sample Rate Hack [1]
  1. ↑ https://github.com/ikorb/gcvideo/blob/main/Firmware/README.md#advanced-settings

Hauppauge WinTV-HVR-1850

Using CX23888.

  • Difference
  • Nintendo RF Modulator With DOL-CPU-11
    Nintendo RF Modulator
    With DOL-CPU-11
  • Nintendo Stereo AV Cable With DOL-CPU-11
    Nintendo Stereo AV Cable
    With DOL-CPU-11
  • Generic S-Video Cable With DOL-CPU-11
    Generic S-Video Cable
    With DOL-CPU-11
Source Difference Noise floor Time spectrogram
CVBS Nintendo RF Modulator
With DOL-CPU-11
CVBS Nintendo Stereo AV Cable
With DOL-CPU-11
Y/C Generic S-Video Cable
With DOL-CPU-11

Open Source Scan Converter

Using PCM1862.

  • Difference
  • HD Retrovision SNES Component Cable With DOL-CPU(P)-10
    HD Retrovision SNES Component Cable
    With DOL-CPU(P)-10
  • Bitfunx/Kaico GameCube Component Cable Swapped L/R
    Bitfunx/Kaico GameCube Component Cable
    Swapped L/R
  • GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter DC Offset
    GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter
    DC Offset
  • GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter DC Offset + Sample Rate Hack
    GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter
    DC Offset + Sample Rate Hack
  • Nintendo GameCube Component Video Cable + Nintendo Stereo AV Cable With DOL-CPU-11
    Nintendo GameCube Component Video Cable + Nintendo Stereo AV Cable
    With DOL-CPU-11
  • Nintendo GameCube Component Video Cable + Nintendo Stereo AV Cable With DOL-CPU(P)-10
    Nintendo GameCube Component Video Cable + Nintendo Stereo AV Cable
    With DOL-CPU(P)-10
  • Nintendo GameCube Component Video Cable + Generic S-Video Cable With DOL-CPU-11
    Nintendo GameCube Component Video Cable + Generic S-Video Cable
    With DOL-CPU-11
  • Retro-Bit Retro Prism Component Cable Swapped L/R
    Retro-Bit Retro Prism Component Cable
    Swapped L/R
Source Difference Noise floor Time spectrogram
RGBCVS HD Retrovision SNES Component Cable
With DOL-CPU(P)-10
YPBPR Bitfunx/Kaico GameCube Component Cable
Swapped L/R
YPBPR GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter
DC Offset
YPBPR GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter
DC Offset + Sample Rate Hack [1]
YPBPR Nintendo GameCube Component Video Cable + Nintendo Stereo AV Cable
With DOL-CPU-11
YPBPR Nintendo GameCube Component Video Cable + Nintendo Stereo AV Cable
With DOL-CPU(P)-10
YPBPR Nintendo GameCube Component Video Cable + Generic S-Video Cable
With DOL-CPU-11
YPBPR Retro-Bit Retro Prism Component Cable
Swapped L/R
  1. ↑ https://github.com/ikorb/gcvideo/blob/main/Firmware/README.md#advanced-settings

RetroTINK-5X Pro

Using PCM1808.

  • Difference
  • Nintendo Stereo AV Cable With DOL-CPU-11
    Nintendo Stereo AV Cable
    With DOL-CPU-11
  • Nintendo Stereo AV Cable With DOL-CPU(P)-10
    Nintendo Stereo AV Cable
    With DOL-CPU(P)-10
  • Generic S-Video Cable With DOL-CPU-11
    Generic S-Video Cable
    With DOL-CPU-11
  • HD Retrovision SNES Component Cable With DOL-CPU(P)-10
    HD Retrovision SNES Component Cable
    With DOL-CPU(P)-10
  • Bitfunx/Kaico GameCube Component Cable Swapped L/R
    Bitfunx/Kaico GameCube Component Cable
    Swapped L/R
  • GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter DC Offset
    GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter
    DC Offset
  • GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter DC Offset + Sample Rate Hack
    GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter
    DC Offset + Sample Rate Hack
  • Nintendo GameCube Component Video Cable + Nintendo Stereo AV Cable With DOL-CPU-11
    Nintendo GameCube Component Video Cable + Nintendo Stereo AV Cable
    With DOL-CPU-11
  • Nintendo GameCube Component Video Cable + Nintendo Stereo AV Cable With DOL-CPU(P)-10
    Nintendo GameCube Component Video Cable + Nintendo Stereo AV Cable
    With DOL-CPU(P)-10
  • Nintendo GameCube Component Video Cable + Generic S-Video Cable With DOL-CPU-11
    Nintendo GameCube Component Video Cable + Generic S-Video Cable
    With DOL-CPU-11
Source Difference Noise floor Time spectrogram
CVBS Nintendo Stereo AV Cable
With DOL-CPU-11
CVBS Nintendo Stereo AV Cable
With DOL-CPU(P)-10
Y/C Generic S-Video Cable
With DOL-CPU-11
RGBCVS HD Retrovision SNES Component Cable
With DOL-CPU(P)-10
YPBPR Bitfunx/Kaico GameCube Component Cable
Swapped L/R
YPBPR GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter
DC Offset
YPBPR GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter
DC Offset + Sample Rate Hack [1]
YPBPR Nintendo GameCube Component Video Cable + Nintendo Stereo AV Cable
With DOL-CPU-11
YPBPR Nintendo GameCube Component Video Cable + Nintendo Stereo AV Cable
With DOL-CPU(P)-10
YPBPR Nintendo GameCube Component Video Cable + Generic S-Video Cable
With DOL-CPU-11
  1. ↑ https://github.com/ikorb/gcvideo/blob/main/Firmware/README.md#advanced-settings

48kHz sample rate

Using MDFourier 1.08 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 & ProArt X570-CREATOR WIFI

Using ALC1220 (S1220A).

This sound card serve as our analog reference.

  • Difference
  • Nintendo Stereo AV Cable With DOL-CPU-11
    Nintendo Stereo AV Cable
    With DOL-CPU-11
  • Nintendo Stereo AV Cable With DOL-CPU(P)-10
    Nintendo Stereo AV Cable
    With DOL-CPU(P)-10
  • Generic S-Video Cable With DOL-CPU-11
    Generic S-Video Cable
    With DOL-CPU-11
  • HD Retrovision SNES Component Cable With DOL-CPU(P)-10
    HD Retrovision SNES Component Cable
    With DOL-CPU(P)-10
  • Bitfunx/Kaico GameCube Component Cable Swapped L/R
    Bitfunx/Kaico GameCube Component Cable
    Swapped L/R
  • GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter DC Offset
    GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter
    DC Offset
  • GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter DC Offset + Sample Rate Hack
    GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter
    DC Offset + Sample Rate Hack
  • Retro-Bit Retro Prism Component Cable Swapped L/R
    Retro-Bit Retro Prism Component Cable
    Swapped L/R
Source Difference Noise floor Time spectrogram
CVBS Nintendo Stereo AV Cable
With DOL-CPU-11
CVBS Nintendo Stereo AV Cable
With DOL-CPU(P)-10
Y/C Generic S-Video Cable
With DOL-CPU-11
RGBCVS HD Retrovision SNES Component Cable
With DOL-CPU(P)-10
YPBPR Bitfunx/Kaico GameCube Component Cable
Swapped L/R
YPBPR GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter
DC Offset
YPBPR GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter
DC Offset + Sample Rate Hack [1]
YPBPR Retro-Bit Retro Prism Component Cable
Swapped L/R
  1. ↑ https://github.com/ikorb/gcvideo/blob/main/Firmware/README.md#advanced-settings

Blackmagic Intensity Shuttle

Using CS42526 and ADV7604.

  • Difference
  • Nintendo Stereo AV Cable With DOL-CPU-11
    Nintendo Stereo AV Cable
    With DOL-CPU-11
  • Nintendo Stereo AV Cable With DOL-CPU(P)-10
    Nintendo Stereo AV Cable
    With DOL-CPU(P)-10
  • Generic S-Video Cable With DOL-CPU-11
    Generic S-Video Cable
    With DOL-CPU-11
  • Hyperkin 3-in-1 HDTV Cable With DOL-CPU-11
    Hyperkin 3-in-1 HDTV Cable
    With DOL-CPU-11
  • HD Retrovision SNES Component Cable With DOL-CPU(P)-10
    HD Retrovision SNES Component Cable
    With DOL-CPU(P)-10
  • Bitfunx/Kaico GameCube Component Cable Swapped L/R
    Bitfunx/Kaico GameCube Component Cable
    Swapped L/R
  • Retro-Bit Retro Prism Component Cable Swapped L/R
    Retro-Bit Retro Prism Component Cable
    Swapped L/R
  • GCVideo-DVI v3.1
    GCVideo-DVI v3.1
  • GCVideo-DVI v3.1 Sample Rate Hack
    GCVideo-DVI v3.1
    Sample Rate Hack
Source Difference Noise floor Time spectrogram
CVBS Nintendo Stereo AV Cable
With DOL-CPU-11
CVBS Nintendo Stereo AV Cable
With DOL-CPU(P)-10
Y/C Generic S-Video Cable
With DOL-CPU-11
Y/C Hyperkin 3-in-1 HDTV Cable
With DOL-CPU-11
RGBCVS HD Retrovision SNES Component Cable
With DOL-CPU(P)-10
YPBPR Bitfunx/Kaico GameCube Component Cable
Swapped L/R
YPBPR Retro-Bit Retro Prism Component Cable
Swapped L/R
TMDS GCVideo-DVI v3.1
TMDS GCVideo-DVI v3.1
Sample Rate Hack [1]
  1. ↑ https://github.com/ikorb/gcvideo/blob/main/Firmware/README.md#advanced-settings

Hauppauge WinTV-HVR-1850

Using CX23888.

  • Difference
  • Nintendo RF Modulator With DOL-CPU-11
    Nintendo RF Modulator
    With DOL-CPU-11
  • Nintendo Stereo AV Cable With DOL-CPU-11
    Nintendo Stereo AV Cable
    With DOL-CPU-11
  • Generic S-Video Cable With DOL-CPU-11
    Generic S-Video Cable
    With DOL-CPU-11
Source Difference Noise floor Time spectrogram
CVBS Nintendo RF Modulator
With DOL-CPU-11
CVBS Nintendo Stereo AV Cable
With DOL-CPU-11
Y/C Generic S-Video Cable
With DOL-CPU-11

Open Source Scan Converter

Using PCM1862.

  • Difference
  • HD Retrovision SNES Component Cable With DOL-CPU(P)-10
    HD Retrovision SNES Component Cable
    With DOL-CPU(P)-10
  • Bitfunx/Kaico GameCube Component Cable Swapped L/R
    Bitfunx/Kaico GameCube Component Cable
    Swapped L/R
  • GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter DC Offset
    GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter
    DC Offset
  • GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter DC Offset + Sample Rate Hack
    GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter
    DC Offset + Sample Rate Hack
  • Nintendo GameCube Component Video Cable + Nintendo Stereo AV Cable With DOL-CPU-11
    Nintendo GameCube Component Video Cable + Nintendo Stereo AV Cable
    With DOL-CPU-11
  • Nintendo GameCube Component Video Cable + Nintendo Stereo AV Cable With DOL-CPU(P)-10
    Nintendo GameCube Component Video Cable + Nintendo Stereo AV Cable
    With DOL-CPU(P)-10
  • Nintendo GameCube Component Video Cable + Generic S-Video Cable With DOL-CPU-11
    Nintendo GameCube Component Video Cable + Generic S-Video Cable
    With DOL-CPU-11
  • Retro-Bit Retro Prism Component Cable Swapped L/R
    Retro-Bit Retro Prism Component Cable
    Swapped L/R
Source Difference Noise floor Time spectrogram
RGBCVS HD Retrovision SNES Component Cable
With DOL-CPU(P)-10
YPBPR Bitfunx/Kaico GameCube Component Cable
Swapped L/R
YPBPR GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter
DC Offset
YPBPR GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter
DC Offset + Sample Rate Hack [1]
YPBPR Nintendo GameCube Component Video Cable + Nintendo Stereo AV Cable
With DOL-CPU-11
YPBPR Nintendo GameCube Component Video Cable + Nintendo Stereo AV Cable
With DOL-CPU(P)-10
YPBPR Nintendo GameCube Component Video Cable + Generic S-Video Cable
With DOL-CPU-11
YPBPR Retro-Bit Retro Prism Component Cable
Swapped L/R
  1. ↑ https://github.com/ikorb/gcvideo/blob/main/Firmware/README.md#advanced-settings

RetroTINK-5X Pro

Using PCM1808.

  • Difference
  • Nintendo Stereo AV Cable With DOL-CPU-11
    Nintendo Stereo AV Cable
    With DOL-CPU-11
  • Nintendo Stereo AV Cable With DOL-CPU(P)-10
    Nintendo Stereo AV Cable
    With DOL-CPU(P)-10
  • Generic S-Video Cable With DOL-CPU-11
    Generic S-Video Cable
    With DOL-CPU-11
  • HD Retrovision SNES Component Cable With DOL-CPU(P)-10
    HD Retrovision SNES Component Cable
    With DOL-CPU(P)-10
  • Bitfunx/Kaico GameCube Component Cable Swapped L/R
    Bitfunx/Kaico GameCube Component Cable
    Swapped L/R
  • GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter DC Offset
    GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter
    DC Offset
  • GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter DC Offset + Sample Rate Hack
    GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter
    DC Offset + Sample Rate Hack
  • Nintendo GameCube Component Video Cable + Nintendo Stereo AV Cable With DOL-CPU-11
    Nintendo GameCube Component Video Cable + Nintendo Stereo AV Cable
    With DOL-CPU-11
  • Nintendo GameCube Component Video Cable + Nintendo Stereo AV Cable With DOL-CPU(P)-10
    Nintendo GameCube Component Video Cable + Nintendo Stereo AV Cable
    With DOL-CPU(P)-10
  • Nintendo GameCube Component Video Cable + Generic S-Video Cable With DOL-CPU-11
    Nintendo GameCube Component Video Cable + Generic S-Video Cable
    With DOL-CPU-11
Source Difference Noise floor Time spectrogram
CVBS Nintendo Stereo AV Cable
With DOL-CPU-11
CVBS Nintendo Stereo AV Cable
With DOL-CPU(P)-10
Y/C Generic S-Video Cable
With DOL-CPU-11
RGBCVS HD Retrovision SNES Component Cable
With DOL-CPU(P)-10
YPBPR Bitfunx/Kaico GameCube Component Cable
Swapped L/R
YPBPR GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter
DC Offset
YPBPR GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter
DC Offset + Sample Rate Hack [1]
YPBPR Nintendo GameCube Component Video Cable + Nintendo Stereo AV Cable
With DOL-CPU-11
YPBPR Nintendo GameCube Component Video Cable + Nintendo Stereo AV Cable
With DOL-CPU(P)-10
YPBPR Nintendo GameCube Component Video Cable + Generic S-Video Cable
With DOL-CPU-11
  1. ↑ https://github.com/ikorb/gcvideo/blob/main/Firmware/README.md#advanced-settings

Instrument measurements

SIGLENT SDS1104X-E

1000Hz tone
Source VPP VMax VMin VRMS
L R L R L R L R
CVBS Nintendo Stereo AV Cable
With DOL-CPU-11 		5.40 5.36 2.68 2.64 -2.72 -2.72 1.81 1.81
CVBS Nintendo Stereo AV Cable
With DOL-CPU(P)-10 		5.36 5.36 2.64 2.64 -2.72 -2.72 1.81 1.81
Y/C Generic S-Video Cable
With DOL-CPU-11 		5.44 5.40 2.68 2.68 -2.76 -2.72 1.82 1.81
RGBCVS HD Retrovision SNES Component Cable
With DOL-CPU(P)-10 		5.36 5.36 2.64 2.64 -2.72 -2.72 1.81 1.81
YPBPR Bitfunx/Kaico GameCube Component Cable 5.80 5.88 2.88 2.92 -2.92 -2.96 1.95 1.99
YPBPR GCVideo-DVI v3.1 + Portta HDMI to YPbPr Converter 2.40 2.40 1.20 1.20 -1.20 -1.20 0.787 0.788
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