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modmix

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  1. Clip Clip value for the same file can differ - folder 1 is on a friend's pc, folder 2 is on my pc. Settings are the same (to the best of our knowledge) Why are there different values for the same file LW 27 ? BTW: What does the Clip value indicate? LW 10.wav has more than 2 values regarded as clipping by audacity TIA Ulli
  2. Great. sidebar There are reports that a native .wav can produce different sound when compaired to a .wav having metadata included. DW reports in a test with a picture included: BIT PERFECT. Using something like WinDiff confirmes that the PCM data are just identical in both files. For obvious reason just the file length given in the 4 bytes in the header is different - should not cause a sonic impact, I would guess. Metadata are appended at the end of the .wav. Conclusion: in case a sonic difference is heard, the program feeding the data to the DAC may cause some effect - any other ideas?
  3. Flac is not lossless - according to DW 😉 From B.wav I created B.flac ona Win10 machine. DW identifies this two files as being not BIT PERFECT: DeltaWave v1.0.47, 2019-12-18T13:27:12.4902666+01:00 Reference: B.flac[R] 13242936 samples 44100Hz 16bits, stereo, MD5=00 Comparison: B.wav[R] 13242936 samples 44100Hz 16bits, stereo, MD5=00 Settings: Gain:False, Remove DC:False Non-linear Gain EQ:False Non-linear Phase EQ: False EQ FFT Size:131072, EQ Frequency Cut: 20Hz - 20000Hz, EQ Threshold: -160dB Correct Drift:False, Precision:30 Non-Linear drift Correction:False Upsample:False, Window:Hann Spectrum Window:Hann, Spectrum Size:262144 Spectrogram Window:Hann, Spectrogram Size:4096, Spectrogram Steps:2048 Dither:False Trim Silence:False Enable Simple Waveform Measurement: False Discarding Reference: Start=0s, End=0s Discarding Comparison: Start=0s, End=0s Initial peak values Reference: -4,123dB Comparison: -4,123dB Initial RMS values Reference: -27,303dB Comparison: -27,303dB Null Depth=300dB X-Correlation offset: 0 samples Trimmed 0 samples ( 0,00ms) front, 0 samples ( 0,00ms end) Gain matching disabled. Phase offset=0ms (0 samples) Difference (rms) = -115,25dB [-125,31dBA] Correlated Null Depth=300dB [50,71dBA] Clock drift: 0 ppm Files are NOT a bit-perfect match (match=100%) at 16 bits Files match @ 99,9959% when reduced to 16 bits ---- Phase difference (full bandwidth): 0,215154875193726° 0-10kHz: 0,08° 0-20kHz: 0,09° 0-24kHz: 0,22° Timing error (rms jitter): 0sec RMS of the difference of spectra: -309,189589339198dB gn=1, dc=0, dr=0, of=0 DONE! Signature: ec2049cf2e38aea72b34198b35a603c3 While Delta Waveform and Delta of Spectra both give a ruler-flat line, Spectrum of Delta gives a result I don't understand. The same for Delta Phase. There are two options to export the delta into a .wav (if I got it right): Writing Delta file to: D:\DW_wav-flac\B-wav-flac_FP64.wav Writing Difference file to: D:\DW_wav-flac\B-wav-flac_pcm32+100dB.wav I would expect Spectra+ showing something similar to Spectrum of Delta - this is not the case. What might have this caused? Additional question: any chance to indicate the limit below which difference are due to calculation? Best, Ulli
  4. hmmm... A 16bit file can have 2^16 distinct values. The difference between values in two 16bit files can be in the range 0 - 2^16 - in steps of one or many bits but not smaller. How does that translate to 24bits?
  5. You are right if it were done by scaling. For the files in use the lower bits are truncated (with dither ,-) DIGICheck does proof that nicely.
  6. A 96/24 file is truncated to 96/16 using two different tools. DW Linearity does show 22 bits (2 to 24) - how come? Thanks Ulli
  7. The access rights in windows need to be adjusted - solved that issue for me. Right click on the file mentioned and find the appropriate settings. hth Ulli
  8. Quite the same, I'ld say. What was your intention?
  9. I wonder what's the best setting to get a good result. A 24bit white noise file is played via Lynx L22 digital out connected to a Soekris DAC1541. The DAC1541 output is recorded from attached L22 analog input (loop with Adobe Audition 3.0). A 20 - 40 dB wide "band" is not what I would expect. Thanks, Ulli BTW: any chance to allow for export e.g. as .csv?
  10. Comparing a file with itself needs DriftCorrection=true to give BIT-PERFECT, Does that make sense? TIA Ulli
  11. Might be usefull in some cases, yes. Would like to have it. TIA Ulli
  12. Level EQ now gives: Files are NOT a bit-perfect match (match=100%) at 16 bits Files are NOT a bit-perfect match (match=100%) at 24 bits Files match @ 100% when reduced to 12,5 bits ---- Phase difference (full bandwidth): 2,52173587518713E-11° 0-10kHz: 0,00° 0-20kHz: 0,00° 0-24kHz: 0,00° Timing error (rms jitter): 0sec RMS of the difference of spectra: -353,388476384148dB gn=1, dc=0, dr=0, of=0 Quite small difference, now. But: 12,5 bits ?... PS: I really like your program 🙂 Looking forward to see further improvements.
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