The New 4-core Raspberry Pi

[tinue]

[Orion]

[dwijtsma]

Thanks for the info Orion,

I really hoped you guys were planning to support this version.
I just ordered one before they would get out of stock everywhere.

Maybe some new features are possible in the future due to the quad core cortex A7.

[audioGM]

I for one am not so impressed with the new Pi, at least, for RuneAudio. I see nothing in RuneAudio that needs anywhere near quadcore or 1GB ram.

Yeah, the new PI is cool as a small, low power server (for which the ordinary PI has to work really hard). But RuneAudio is just so featherlight. I think you will not even notice the difference.

[npejcic]

I mostly agree with audioGM, but I notice that some of FLAC-s with 192kHz sample rate can be demanding and use more than 65% of Raspberry Pi B/B+ CPU. Sometime this can causes audio chopping. From this perspective, more powerful CPU can be useful.

But, most expected upgrade for Raspberry Pi is solution with better/faster LAN Phy, including independent bus, so USB can finally vent This is maybe task for Raspberry Pi 3 in next years.

Anyway, for same price if we have slightly better CPU, why not

P.S. In my test with HD FLAC I use Raspberry Pi B+ and RaspyPlay4 I2S DAC

[dwijtsma]

The Pi 2 might not deliver miracles, but might improves some things:
- Faster connection to the GUI from a tablet. Now it takes a few seconds.
- Play bit rates of 2500kbps. (Yes, I have one album at this rate)
- room correction? Is the PI 2 fast enough to pull this off?

[Aquarius]

[dwijtsma]

Room correction has to be done in the frequency and time domain.
REW is an open source project that can do room correction on a PC. http://www.roomeqwizard.com/
Maybe REW can produce an output file which can be imported using the runeaudio GUI to correct the 'special effects' of our living/listening rooms. I heard something about BruteFIR in the past that might be able to pull this off.

In principle you need a calibrated microphone connected to a standard PC sound card and PC software to create such an output file. Adding this part to a runeaudio would make it unnecessarily complicated I think.

[jnfindley]

Here is a link to an article which contains some benchmarks on the Raspberry Pi and the Pi 2, so you can compare.

Raspberry Pi 2 Benchmarked
By daveh, Published Feb 04, 2015



As you can see, there is a nice performance increase in cpu, memory, storage random write (I assume SD card), and storage random read (I assume SD card). Considering that RuneAudio is built on top of a multi-tasking OS, I would think that all of the above improvements would be most welcome.

[ACX]