View: https://vocaroo.com/1cn67SeJ36Ie
Within the clip, I swap the API A2D management swap via the varied bitrate settings, which is when the frequency noises change.
In that clip, after I units the API A2D to 192k bitrate, the screeching noise wasn’t there. However after altering the clock pace within the Artistic Labs software program, the screeching sound began occurring on the 192k setting, as effectively. Additionally, when enjoying with the software program, generally the screeching wouldn’t occur on one setting or one other – however it appeared to be random which bitrate setting the screeching would not be on, it did not correspond to what the software program was set to. And when it wasn’t making that noise on a selected bitrate, I examined enjoying audio right into a mic and thru the A2D, and no audio was coming via my PC audio system, although the API A2D preamp and AD meters look like receiving the sound usually.
After sufficient enjoying round with the bitrate within the software program, I received it in order that each the software program bitrate and the API A2D bitrate are set to 44.1k, with out that screeching noise coming via the audio system. So I examined it in my DAW by monitoring a monitor with the enter supply set to Digital-In L. However no audio got here via the audio system. Then, after I set the enter supply to Aux L, I received that very same digital screeching noise coming via the audio system.
View: https://youtu.be/2pJo073_CCA
The API preamp interface labored with my earlier PC, which had an Auzentech Prelude sound card with coaxial SPDIF. However I can not use that sound card with my new PC because the Auzentech sound card is PCI, non-express, and my newer motherboard would not assist that.
Coaxial SPDIF is type of an outdated connection that is not supported in newer stuff, which makes it powerful determining a very good connectivity setup for my API interface. The Titanium HD is meant to assist coaxial SPDIF, AFAIK, but it is not working for me.
One resolution I’ve considered can be to get a sound card that supported optical SPDIF, after which use and adapter to transform from coaxial SPDIF to optical SPDIF. The one present Artistic Labs sound card which helps optical SPDIF-in is the AE-9, which prices half a grand. It’d suck to pay that simply to attach my interface.
One other resolution may very well be to promote the API A2D and purchase some 500-series API preamps and a very good AD converter. However that might find yourself being costly and I actually just like the API A2D’s options and design.
One other concept I’ve had is modding the API A2D’s outputs, to provide it ADAT, USB, or no matter works output. I do not know if that is doable, however whether it is, it might be good to do.
Rear of the API A2D:
Titanium HD’s options:
