Theamoebason
Member
- Joined
- Dec 5, 2020
- Messages
- 14
- Likes
- 15
Hi All
I just dug out an old CD Player to give to my elderly neighbour (her's stopped working). I thought I better test it first but it sounded dull. OK so I have learnt on this site that this was most likely due to a simple level mismatch with my other player.
OK so I recorded just over 1 min of audio on from both (24/96) through a Yamaha URX22C directly to Cubase (ASIO), then plugged the results into DeltaWave. OK so firstly in cubase it looked like these are out of phase with each other, how can that be?? Also I have no way of understanding the results so thought I would post them here to see if someone who understands may have a look over the results. I'll give her the player, but is it on its last legs? Many thanks for any help!
original files:
we.tl
Results:
DeltaWave v2.0.25, 2026-02-07T15:25:53.7692610+00:00
Reference: Arcam_070226.wav[?] 8544000 samples 96000Hz 24bits, stereo, MD5=00
Comparison: Yamaha_070226.wav[?] 8544000 samples 96000Hz 24bits, stereo, MD5=00
Settings:
Gain:True, Remove DC:True
Non-linear Gain EQ:True Non-linear Phase EQ: True
EQ FFT Size:65536, EQ Frequency Cut: 0Hz - 0Hz, EQ Threshold: -500dB
Correct Non-linearity: False
Correct Drift:True, Precision:30, Subsample Align:True
Non-Linear drift Correction:False
Upsample:False, Window:Kaiser
Spectrum Window:Kaiser, Spectrum Size:32768
Spectrogram Window:Hann, Spectrogram Size:4096, Spectrogram Steps:2048
Filter Type:IIR, window:Kaiser, taps:262144, minimum phase=False
Dither:False bits=0
Trim Silence:True
Enable Simple Waveform Measurement: False
Correct for MP DC Filter = False, DC Filter frequency=0.5 Hz
Discarding Reference: Start=0s, End=0s
Discarding Comparison: Start=0s, End=0s
Initial peak values Reference: -4.611dB Comparison: -6.868dB
Initial RMS values Reference: -28.652dB Comparison: -30.926dB
Null Depth=10.855dB
Phase inverted
X-Correlation offset: 2 samples
Drift computation quality, #1: Good (6.72μs)
Trimmed 0 samples ( 0.00ms) front, 0 samples ( 0.00ms end)
Final peak values Reference: -6.128dB Comparison: -6.126dB
Final RMS values Reference: -28.739dB Comparison: -28.738dB
GS: 0.018688 ms, -2.2736 dB (L), -2.2789 dB (R), -56.0 dBFS (L), -52.7 dBFS (R) [-55.7dBFSA (L) -52.4dBFSA (R)]
Gain= -2.2736dB (0.7697x) DC=0 Phase offset=0.018688ms (1.794 samples)
Difference (rms) = -55.96dB [-55.67dBA]
Correlated Null Depth=51.47dB [48.95dBA]
Clock drift: -9.42 ppm
Files are NOT a bit-perfect match (match=1.89%) at 16 bits
Files are NOT a bit-perfect match (match=0.01%) at 24 bits
Files are NOT a bit-perfect match (match=0.01%) at 24 bits
Files match @ 49.9886% when reduced to 9.7 bits
---- Phase difference (full bandwidth): 11.7991008780414°
0-10kHz: 8.81°
0-20kHz: 10.80°
0-24kHz: 11.09°
Phase EQ not computed
Timing error (rms jitter): 147ns
PK Metric (step=400ms, overlap=50%):
RMS=-96.0dBFS
Median=-99.0
Max=-71.7
99%: -90.43
75%: -97.16
50%: -99.03
25%: -100.52
1%: -103.28
gn=1.29920905952542, dc=2.32170451603214E-08, dr=-9.42149110511305E-06, of=1.79408672016343
DONE!
Signature: a309c8adfe2280aa847af6eda3eabfb2
RMS of the difference of spectra: NaNdB
DF Metric (step=400ms, overlap=0%):
Median=-31.2dB
Max=-17.1dB Min=-48.3dB
1% > -47.78dB
10% > -43.06dB
25% > -34.32dB
50% > -31.21dB
75% > -29.84dB
90% > -28.59dB
99% > -20.8dB
Linearity 21.7bits @ 0.5dB error
I just dug out an old CD Player to give to my elderly neighbour (her's stopped working). I thought I better test it first but it sounded dull. OK so I have learnt on this site that this was most likely due to a simple level mismatch with my other player.
OK so I recorded just over 1 min of audio on from both (24/96) through a Yamaha URX22C directly to Cubase (ASIO), then plugged the results into DeltaWave. OK so firstly in cubase it looked like these are out of phase with each other, how can that be?? Also I have no way of understanding the results so thought I would post them here to see if someone who understands may have a look over the results. I'll give her the player, but is it on its last legs? Many thanks for any help!
original files:
Yamaha_070226.wav
2 files sent via WeTransfer, the simplest way to send your files around the world
Results:
DeltaWave v2.0.25, 2026-02-07T15:25:53.7692610+00:00
Reference: Arcam_070226.wav[?] 8544000 samples 96000Hz 24bits, stereo, MD5=00
Comparison: Yamaha_070226.wav[?] 8544000 samples 96000Hz 24bits, stereo, MD5=00
Settings:
Gain:True, Remove DC:True
Non-linear Gain EQ:True Non-linear Phase EQ: True
EQ FFT Size:65536, EQ Frequency Cut: 0Hz - 0Hz, EQ Threshold: -500dB
Correct Non-linearity: False
Correct Drift:True, Precision:30, Subsample Align:True
Non-Linear drift Correction:False
Upsample:False, Window:Kaiser
Spectrum Window:Kaiser, Spectrum Size:32768
Spectrogram Window:Hann, Spectrogram Size:4096, Spectrogram Steps:2048
Filter Type:IIR, window:Kaiser, taps:262144, minimum phase=False
Dither:False bits=0
Trim Silence:True
Enable Simple Waveform Measurement: False
Correct for MP DC Filter = False, DC Filter frequency=0.5 Hz
Discarding Reference: Start=0s, End=0s
Discarding Comparison: Start=0s, End=0s
Initial peak values Reference: -4.611dB Comparison: -6.868dB
Initial RMS values Reference: -28.652dB Comparison: -30.926dB
Null Depth=10.855dB
Phase inverted
X-Correlation offset: 2 samples
Drift computation quality, #1: Good (6.72μs)
Trimmed 0 samples ( 0.00ms) front, 0 samples ( 0.00ms end)
Final peak values Reference: -6.128dB Comparison: -6.126dB
Final RMS values Reference: -28.739dB Comparison: -28.738dB
GS: 0.018688 ms, -2.2736 dB (L), -2.2789 dB (R), -56.0 dBFS (L), -52.7 dBFS (R) [-55.7dBFSA (L) -52.4dBFSA (R)]
Gain= -2.2736dB (0.7697x) DC=0 Phase offset=0.018688ms (1.794 samples)
Difference (rms) = -55.96dB [-55.67dBA]
Correlated Null Depth=51.47dB [48.95dBA]
Clock drift: -9.42 ppm
Files are NOT a bit-perfect match (match=1.89%) at 16 bits
Files are NOT a bit-perfect match (match=0.01%) at 24 bits
Files are NOT a bit-perfect match (match=0.01%) at 24 bits
Files match @ 49.9886% when reduced to 9.7 bits
---- Phase difference (full bandwidth): 11.7991008780414°
0-10kHz: 8.81°
0-20kHz: 10.80°
0-24kHz: 11.09°
Phase EQ not computed
Timing error (rms jitter): 147ns
PK Metric (step=400ms, overlap=50%):
RMS=-96.0dBFS
Median=-99.0
Max=-71.7
99%: -90.43
75%: -97.16
50%: -99.03
25%: -100.52
1%: -103.28
gn=1.29920905952542, dc=2.32170451603214E-08, dr=-9.42149110511305E-06, of=1.79408672016343
DONE!
Signature: a309c8adfe2280aa847af6eda3eabfb2
RMS of the difference of spectra: NaNdB
DF Metric (step=400ms, overlap=0%):
Median=-31.2dB
Max=-17.1dB Min=-48.3dB
1% > -47.78dB
10% > -43.06dB
25% > -34.32dB
50% > -31.21dB
75% > -29.84dB
90% > -28.59dB
99% > -20.8dB
Linearity 21.7bits @ 0.5dB error
Last edited:
