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About blue2

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  1. Does this mean the TAD's are staying? Or is the speaker change on hold and re-evaluate once the room treatments are in place? At least you know you're moving forward now :-)
  2. Could you try to summarise the problem in precise terms? Here's my understanding - please correct. The problem: The clock drift analysis shows a variation in a smooth sinusoid like pattern amplitude ~0.02ppm but expected is no variable drift as seen in software generated examples - how many samples does this equate to? Test scenario: loopback recording only, similar behaviour across various computers as source and various DAC/ADC The algorithm: … the algorithm is to measure offsets of samples at multiple locations in the waveforms. Then, a linear regression is used to fit a line to the offsets, the slope of the line is the drift, the intercept is the offset. From the charts 20 samples per file are used regardless of run time of 1-3mins in examples. You mentioned the comparison is in the frequency domain? Please explain how this is done and what values are compared. I'd have thought you would just pattern match the raw data samples (which means both files have to be at the same rate)?
  3. What about using a different computer to play the music?
  4. This review on TAS suggests speaker matching is essential (not so good with low sensitivity loads) therefore home demo required. Tested here with several speakers by Tone Audio, and more here by Stereophile who found a flaw with one recording.
  5. I've now bought a miniDSP UMIK-1 and using REW measured my Tannoy Kensington SE's and Wharfedale SW150 HT subwoofer. It's apparent I have a room node at 40Hz which main speakers and sub are exciting. The sub is mainly for HT and I was hoping would supplement the Tannoy's but they don't go low enough and just reinforce the 40Hz node. So my next consideration is a better sub. I've noted @mitchco is using Rythmik Audio F12 (about $1100 inc. shipping) but couldn't find anything for @dallasjustice or @3ll3d00d who also seem to have invested in hifi audio sub set ups. Another option is maybe 2 x BK's XXLS400-FF Subwoofer 400W RMS 12" but this is non-servo controlled. Any comments/recommendations from folks that have tried/demoed subs in this budget range i.e. 1 or 2 subs totalling <£1000?
  6. That will be interesting to read. I think I prefer the Witmer Trio "Free" versus Carmen Gomes "Don't You Cry" and Feen Brothers "Play Brubeck" musically, but the OneMic recordings have the best SQ. It seems to me these 3 are the new ultimate reference standard recordings. Despite Witmer Trio "Free" not being recorded 'live' in a OneMic session, each instrument sounds 'live'. Well done Sound Liaison you've raised the bar!
  7. Another excellent recording. Maybe Sound Liaison haven't recorded enough material for an album yet. Paul van der Feen seems to be a very highly regarded sax player in NL.
  8. Wild guess but sounds like your network. I'd put some music on your PC and try the above again to see if Audirvana works OK.
  9. Here is San Geronimo's web site where they have 2 more one microphone recording videos. And pay dirt lots of one microphone recordings made by John Cuniberti + free remix of Joe Satriani Shockwave Supernova Remix EP
  10. Hi Pap, I only found one recording with this search but a lot of 'how to' videos? However this is definitely worth a listen "One mic recording / AEA R88 Ribbon "Hear the Sound" by San Geronimo". As for multi-track recordings if you're having a lazy Sunday morning you might want to check these out: An article by iZoTope "5 Songs That Are Brilliantly Mixed and mastered". My pick from these is The Derek Trucks song Chevrolet from Songlines which has interestingly detailed recording notes. What Hifi magazine has an article "12 Great Jazz Recordings to Test Your Hifi System". An eclectic selection!
  11. All quiet on the speaker front ? Any demo's? Short list?
  12. Nice one! Witmer Trio - Free especially as it's on offer at €10 for DSD - €20 for DXD
  13. JRiver currently costs $59.98. Does this not get you upgrades? How much have you paid in total for v18 to v24 if you don't mind me asking?
  14. Thanks for another superb article. As a beginner thinking of going down this route in a 'conservative' manner I'm thinking of 2 or 3 steps: 1. Buy a calibrated microphone and measure the main speakers and sub separately. Adjust (single) sub crossover frequency and volume to integrate with main speakers guided by frequency response curves and remeasure combined sub and mains. Try out various test tracks with and without the sub - schematic would be as in 'Full Range' picture. 2. Buy some software (HQPlayer/Accourate/Audiolens/Audirvana/JRiver) or use freeware foobar2000/Sox/REW and create convolution filters treating the sub and mains as one full range system. So calculate convolution based on the system set up in step (1). Evaluate system with and without DRC. Probably try LF range alone first since mains and sub overlap roughly 50-100Hz. 3. Progress to splitting sub as separate output as in 'Split Range' picture. If I'm spending money on software I'd like to include upsampling in the feature requirements. Since convolution needs to be handled in the computer, so must the master volume control so the sub and mains maintain integration. So I need a music player such as JRiver which handles convolution and sub output. This could be connected by line out or by a computer sound card/onboard DAC. My DAC is 2 channel and I wouldn't want to spend more on a multi channel. Since volume control is software controlled the preamp is unnecessary, and the DAC could be set at a safe max volume (for speaker protection). So the questions - my concerns are volume control and which software package to buy. Is my reasoning correct and is this a workable plan? Does Audirvana have the required features to replace JRiver as used by @mitchco? I believe HQPlayer could do the job but not sure about mains + sub output via separate devices as seen by the computer. TIA
  15. Jud, thanks for your help. Can anyone else help? I don't have either Audirvana or HQPlayer hence the question to those that do for an opinion on DSD512 SQ. I can obviously get a trial on these but I don't believe I can have another trial of HQPlayer to compare. As regards sub output can it send the same stereo output to 2 PC devices so as to accommodate my use case?
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