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  #71  
Old 05-16-2022, 11:32 AM
spinsong spinsong is offline
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Default Apple Studio/Mini - What bits we need

The bandwidth depends on your setup. Do you plan on editing video within protools for example, even though they have apps just for that purpose. The bandwidth necessary to run stereo 44.1 k audio is around 1.4 mbps if Iím not mistaken. Iím too lazy to look it up again. Jfreak was good with those numbers and mathematical calculations. My spinning drive costs a fraction of a nvme and is rock solid. Slightly over 100 megs in speed which translates to over 150 mono tracks at 44.1 k. More than what you can throw at it for a fraction of the price as stated before. For samples, ssd runs fine off of thunderbolt. Donít load too much samples. I also use an m1 on top of a cheese grater for the transition. Iím saving 3 grand off the computer setup alone. Runs rock solid under Big Sur, and fits just fine below the desk. Have Monterey on a laptop for tweaking and testing. So Iím riding the wave and cutting edge.


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  #72  
Old 05-16-2022, 11:57 AM
Darryl Ramm Darryl Ramm is online now
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Default Re: Apple Studio/Mini - What bits we need

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Originally Posted by spinsong View Post
The bandwidth depends on your setup. Do you plan on editing video within protools for example, even though they have apps just for that purpose. The bandwidth necessary to run stereo 44.1 k audio is around 1.4 mbps if I’m not mistaken. I’m too lazy to look it up again. Jfreak was good with those numbers and mathematical calculations. My spinning drive costs a fraction of a nvme and is rock solid. Slightly over 100 megs in speed which translates to over 150 mono tracks at 44.1 k. More than what you can throw at it for a fraction of the price as stated before. For samples, ssd runs fine off of thunderbolt. Don’t load too much samples. I also use an m1 on top of a cheese grater for the transition. I’m saving 3 grand off the computer setup alone. Runs rock solid under Big Sur, and fits just fine below the desk. Have Monterey on a laptop for tweaking and testing. So I’m riding the wave and cutting edge.

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Audio bandwidth is easy 44.1 kHz stereo say @ 32-bit float -> (2 x 44,100 x 32 / 8)/1024 = 344 kB per stereo track.

This is just a bare minimum it (at least historically) does not guarantee a working track count on a spinny HDD that meets that performance, the practical limits there have always historical been more capped by HDD seek performance. And disk cache changes lots of stuff, now with disk cache in many situations you can probably get away with recording to as a slow a HDD as you can find and things will work. Not that you should.
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  #73  
Old 05-16-2022, 03:51 PM
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kings79 kings79 is offline
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Default Re: Apple Studio/Mini - What bits we need

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Originally Posted by Darryl Ramm View Post
A reminder, as I've posted about on DUC before, that the Echo Dual NVMe Thunderbolt is a simple/dumb enclosure that takes the 4 x PCIE 3 lanes from Thunderbolt and routes two pairs of the lanes to each NVMe M.2 slot
Its just storage. Say SFX library and Video streaming.


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Is anyone really using that much bandwidth in-session? I'm fully onboard with having as much as feasibly possible, and some to spare for peace-of-mind, but within reason of practicality. Some of these numbers make me think that people are looking to edit 8K video.
I agree 100% Eric. Everyon's obsessed with all this power and speed. But do they actually need it?...
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Presonus Quantum 4848
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Old 05-17-2022, 12:15 AM
Marsdy Marsdy is offline
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Default Re: Apple Studio/Mini - What bits we need

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Originally Posted by Darryl Ramm View Post
Audio bandwidth is easy 44.1 kHz stereo say @ 32-bit float -> (2 x 44,100 x 32 / 8)/1024 = 344 kB per stereo track.

This is just a bare minimum it (at least historically) does not guarantee a working track count on a spinny HDD that meets that performance, the practical limits there have always historical been more capped by HDD seek performance. And disk cache changes lots of stuff, now with disk cache in many situations you can probably get away with recording to as a slow a HDD as you can find and things will work. Not that you should.
I think seek time is underestimated, especially for sample streaming.

Iím sure Darryl will correct me if Iím wrong on this but.. another misconception is how the measured/quoted speeds of NVMe drives and storage solutions equates to audio/streaming performance. When you see numbers like up to 3500MB/s for a Samsung m.2 or 8000MB/s for a Sonnet m.2 PCIe adapter, those speeds are for reading one huge multi-GB file off disk. If you measure the speed with data chunks more realistic for streaming multiple audio files, the performance drops off rapidly.

VSLís Synchron Player sample player measures the performance of your streaming drive to optimise the sample pre-load size. I think it does it with 64kB/s chunks and my Sonnet m.2 RAID card that reads 8000MB/s in Blackmagic Speedtest is now reading at 450 to 500MB/s. Thatís still fast relative to 344kB per stereo track but when streaming many hundreds and sometimes thousands of sample voices, it soon adds up.
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