[PD] firewire is dead?

[J Oliver]

Hi Max, 

Is it possible for you to test this same card in linux?

J


On Nov 26, 2012, at 9:25 AM, Max wrote:

> I got a new Fireface UCX, updated drivers and did a fresh test (replacement for the first one which didn't work). It has three modes: Firewire, USB and USB in Class Compliant (Plug and Play) mode.
> Interesting is, that Firewire is the worst when it comes to latency and Class Compliant is less than two milliseconds worse than the proprietary RME USB Driver. Bandwith might still be better in Firewire for multichannel setups, but I didn't test this. In my previous post on the topic the USB latency was wrong, it was a driver problem.
> 
> Tested with Pure Data 0.43.4-extended-20121101
> /doc/7.stuff/tools/latency.pd
> Sampling rate 44100 Hz, delay 20 ms Blocksize 64, No callbacks 
> 
> OS X 10.8.2 Mac Book Pro 2 Ghz i7
> 
> latency of internal laptop soundcard ("Intel High Definition Audio") for reference:
> print: 24.348
> print: 24.3098
> print: 24.3123
> print: 24.3148
> print: 24.3173
> print: 24.3199
> print: 24.3224
> print: 24.3249
> print: 24.3275
> print: 24.33
> print: 24.3326
> 
> latency Fireface UCX via Firewire, RME Driver
> print: 27.8751
> print: 27.8777
> print: 27.8803
> print: 27.8829
> print: 27.8854
> print: 27.8472
> print: 27.8497
> print: 27.8522
> print: 27.8548
> print: 27.8573
> print: 27.8598
> print: 27.8624
> print: 27.8649
> print: 27.8675
> print: 27.87
> print: 27.8726
> 
> latency of Fireface UCX via USB, RME Driver
> print: 23.0024
> print: 23.005
> print: 23.0076
> print: 23.0101
> print: 22.9719
> print: 22.9744
> print: 22.9769
> print: 22.9795
> print: 22.982
> print: 22.9845
> print: 22.9871
> print: 22.9896
> print: 22.9922
> print: 22.9947
> print: 22.9973
> print: 22.9998
> print: 23.0024
> print: 23.005
> 
> latency Fireface UCX via USB, Class Compliant Mode
> print: 24.3173
> print: 24.3199
> print: 24.3224
> print: 24.3249
> print: 24.3275
> print: 24.33
> print: 24.3326
> print: 24.3352
> print: 24.3377
> print: 24.3403
> print: 24.3429
> print: 24.3454
> print: 24.348
> print: 24.3098
> print: 24.3123
> 
> 
> 
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