File for Verifying Sound Quality Degradation through DA/AD Conversion and Listening Test
This is a file and listening test collection to verify the degree of sound quality degradation caused by DA/AD conversion, created using Focusrite Scarlett 18i20 Generation 4.
Conditions for File Creation
Connected LineOut 7/8 to Line In 7/8 of Focusrite Scarlett 18i20 Generation 4 using 1m unbalanced cables
Set the gain of Line In 7/8 to 0dB and the playback volume of the music file to -12dB (adjusted to minimize distortion during measurement)
Played back the original 96kHz/24bit file and recorded simultaneously
Normalized the loudness of both the original and recorded audio to align their volumes
Resulting Files
Original
After DA/AD Conversion
After 3 DA/AD Conversions
After 10 DA/AD Conversions
Listening Test
Try distinguishing between the original audio and the audio after DA/AD conversion.