Original file with Reaper with Audirvana file etc. I then also did the same loopback test with Reaper (therefore Core Audio) > Hilo > Reaper.Īnyhow, I then sample aligned and gain matched all the files and they all null perfectly. In Reaper, I then changed the soundcard to the Macbook internal's, then back to Hilo's, restarted Reaper and was able to record.Įxclusive access and integer mode was still on in Audirvana but I can't tell if it was working with the "Reaper restart work around". With Exclusive access on, it blocks Reaper from recording (as advertised). I did a digital (AES) loopback test with Audirvana and my Lynx Hilo.Īudirvana is Hilo's "Play 1/2" which goes to AES Out which is connected to AES IN which is set as "Record 1/2" which gets recorded in Reaper.Įxclusive access off (integer mode option disappears when off so I don't know if it's still on). While digital data as such is pure and perfect, it always has to be converted to an analog signal in the end, and that conversion step is not necessarily as straightforward and without problems as one might think. What I want to say is, I wouldn't disqualify the theory behind Audirvana as "esoteric nonsense" a priori. There they found that the servo motors of the CD players could influence the output a tiny bit and this influence could be different with different CD copies, although those were bit identical from a data point of view.Īs far as I remember, listeners could not reliably identify the discs however. the same album, but two different copies of it). I remember a paper from Prism Sound years back where they analyzed differences in CD player outputs based on CDs from different production runs (i.e. It would be really interesting to do some proper blind/ABX testing with this software. This could mean that it's not so much a question about what Core Audio does (or does not), but what Audirvana does. I would hesitate to attribute this difference purely to the Core Audio subsystem - in my comparison Core Audio was not performing any sample rate conversion, or word length reduction.For what it's worth, if you check out discussions about Audirvana in other forums (for example the already mentioned ASR), you'll find people claiming that Audirvana also sounds better compared to other players on Windows. There should be enough information in these two videos to demonstrate the ways you can end up not being grounded.Īudirvana Studio offered a different presentation - there was an improvement in transient detail, image depth and stereo field precision - the audio was definitely enhanced. If say, the metal puck disappears or you can't get a grounded cable and so on. Not sure what the new M1 stuff is going to change up on the grounding front. One guy has the right power cable and is using it on a USB C PSU. Though the New silicon is way more efficient, that fact won't account for any lack of grounding out of the PSU noise. These laptops (and Mac Minis) clearly need proper grounding for professional audio use.there's lot's of people providing peripherals for Macs so the possibility for power variables is fairly fearsome imo. Not good.īut then on battery power (with the laptop PSU removed) this drops down to 0.2v which I'm assuming is closer to my body's nominal electrical charge. With my 2020 13" M1 MBPro plugged in via Apple's USB-C PSU and my body grounded using an anti-static wrist strap I can feel little shocks between the laptop case and my skin - a little tingle.Ĭonnecting a volt meter between the laptop case and my thumb and pointer finger (with my wrist still grounded to earth) im measuring a constant 1.8v AC. Which, in a USB-C powered world, is easy to do as people can now power their laptops thru a hub even.
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |