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More => Old Versions => JRiver Media Center 22 for Windows => Topic started by: JazzHDaudio on February 06, 2017, 06:21:52 pm

Title: JRiver with 8 channels Convolution.
Post by: JazzHDaudio on February 06, 2017, 06:21:52 pm

Hi, does anybody knows if JRiver benefits from higher frequency CPU or higher numbers of CORES, when processing Convolution for 8 Channels.

Some software are more sensitive to CPU freq and some are to numbers of Cores in a CPU.

Thanks in advance,

P.S: Sorry if that question has already been answered already.

Title: Re: JRiver with 8 channels Convolution.
Post by: JimH on February 06, 2017, 06:58:51 pm

Quote from: JazzHDaudio on February 06, 2017, 06:21:52 pm

Some software are more sensitive to CPU freq and some are to numbers of Cores in a CPU.

That's a little hard to believe.

Title: Re: JRiver with 8 channels Convolution.
Post by: JazzHDaudio on February 06, 2017, 07:09:37 pm

Hi JimH,
What do you consider hard to believe ?
Software that benefits from higher CPU frequency, numbers of Cores or that I am doing Convolution with 8 channels ?
I am using Acourate filters in JRiver to create 4 Way Xover.

Title: Re: JRiver with 8 channels Convolution.
Post by: JimH on February 06, 2017, 07:17:46 pm

More power, yes.  Certain frequencies or cores, no.

Title: Re: JRiver with 8 channels Convolution.
Post by: JazzHDaudio on February 06, 2017, 07:21:54 pm

Thanks JimH for your reply.
When you say more power, you mean a more recent CPU with as high as possible CPU Clock, if possible OC ?
Thanks,

Title: Re: JRiver with 8 channels Convolution.
Post by: JimH on February 06, 2017, 08:02:49 pm

You could ask in the convolution thread here.  Try a search.

Title: Re: JRiver with 8 channels Convolution.
Post by: BartMan01 on February 06, 2017, 08:04:06 pm

I think I understand what they are trying to ask:
Does Convolution take advantage of multiple cores, or does it just use a single core?

Sensitive to CPU freq = runs on a single core so it needs the fastest possible single core speed.
Sensitive to number of cores = uses multiple cores so it can run 'faster' on a slower processor than a program that single threads in a faster CPU.

Title: Re: JRiver with 8 channels Convolution.
Post by: JazzHDaudio on February 06, 2017, 08:14:09 pm

Hi BartMan01,

You are close to what I am looking for.

Does Convolution take "More" advantage of multiple cores¸, for a cpecific Clock Freq or
Does Convolution take "More" advantage of CPU Clock Freq, for the same quantity of Cores ?

I can see that during Convolution, only 4/8 cores are being used.
Would I get better results by having a higher clock freq ?
Thanks,

Title: Re: JRiver with 8 channels Convolution.
Post by: mattkhan on February 07, 2017, 12:58:50 am

I think the question you are asking is how does the jriver Convolver allocate paths to threads?

What is the goal here btw? A modern PC should handle 8 channels without much difficulty unless perhaps it is some tiny thing. You say "would I get better results" which implies you have a problem today, if so what is it?

Title: Re: JRiver with 8 channels Convolution.
Post by: JazzHDaudio on February 07, 2017, 04:21:29 am

Hi mattkhan,
If if perform a quad DSF conversion to PCM and performs also Convolution for 8 channels, it starts to be a bit demanding for the PC.
I noticed that at lower CPU freq, I will start having some "clic" or "pops". So that make me believe that it is sensitive to CPU Clock.
I am investigating now with Uli (Audiovero Acourate) if "Convolver" could help in that situation.
I'll keep you posted with the answers.

Title: Re: JRiver with 8 channels Convolution.
Post by: thorsten on February 08, 2017, 01:08:24 pm

Hi,
What kind of audio interface do you have?
I'm running an i5 sandy bridge with 17 channel convolving. To reduce the "clics", rise the buffer size, I use 4096 samples.
With this setup, the cpu load is below 10% when watching video or hearing to multich sacd iso.
Greets,
Thorsten

Title: Re: JRiver with 8 channels Convolution.
Post by: JazzHDaudio on February 09, 2017, 07:29:29 pm

Hi thorsten,
I am using JRiver + Acourate filters + Exasound e38.
The buffer size you mean to increase to 10 or even 20 seconds ?
I will give it a try.
Thanks,