More > JRiver Media Center 22 for Linux
Intermittent playback problem for DSD files
JimH:
DSD on a Pi reading from a network drive may be a bit of a stretch. You're asking a lot from a very low power machine.
DJLegba:
I don't have a Pi but I seem to recall reading that some models have trouble with concurrent heavy loads on the network and USB ports.
curtisls87:
--- Quote from: JimH on July 08, 2017, 04:38:04 pm ---DSD on a Pi reading from a network drive may be a bit of a stretch. You're asking a lot from a very low power machine.
--- End quote ---
That may be, but I'd like to understand why that is. I monitor the CPU utilization in Task Manager when it plays, and it is only about 25% while loading the song, then drops down below 10%, which is actually less than the 50-60% required when I turn off bit streaming to play these same files over the network via PCM, and they always start and play in that mode. Additionally, on 24/192 files on my Pi, CPU utilization is almost exactly the same and they always play first time, every time.
Additionally, I found I had the same problem on the iMac/Debian machine, so it's not just the Pi where I'm seeing this.
Not trying to be too much of a pain, and I don't claim to have knowledge of the bit-by-bit process by which this works, but it really seems counterintuitive.
JimH:
It might be network bandwidth or the ability of the Pi to handle that much data. It's a lot more data than 24/192.
curtisls87:
--- Quote from: JimH on July 08, 2017, 06:24:27 pm ---It might be network bandwidth or the ability of the Pi to handle that much data. It's a lot more data than 24/192.
--- End quote ---
I honestly don't think so. I have the same problem on the iMac/Debian, which should enough horsepower. When I do get a file to play on that system, I consistently see the file transfer taking about 10 Megabytes per second (not megabits). That should be plenty of bandwidth.
Also, I'm interested in your statement that it's a lot more data than 24/192. My understanding of DoP DSD is that it uses 24/176.4 as it's carrier with 16 bits for signal and 8 bits for management. That should be less data than a file at 24/192.
If my understanding is not correct, I am interested to understand the correct information.
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