![usb vs firewire audio interface latency usb vs firewire audio interface latency](https://www.tonecontrol.eu/media/catalog/product/cache/b57d735e2b50efb81e39c28918fcdba9/b/e/behringer_firepower_fca_1616_audio_interface.png)
I even went a little further, I measured the latency against the start of the MIDI message. There might be overhead differences as buffer size is changed.ġ, I did similar measurements a couple years ago. I made some latency measurements with my last system, and I also found that an increase in buffer size increased latency more than expected from the simple arithmetic of samples/samplerate. Thanks for reading and forgive my English! Pianoteq feel uncomfortable beacause of 'suboptimal buffer size', anyway it works well, with some pop here and a click there, very spaced in time.Īnyway I would like to hear thoughts and if someone wants to make some experiment I'd like to know his figures. I don't understand why the difference between measured and calculated latencies are not constant.īy the way, I can play comfortably with the laptop's internal soundcard frequency set to 192Khz and a buffer size of 256, using 64 or 128 makes Mr.
![usb vs firewire audio interface latency usb vs firewire audio interface latency](https://stampsound.com/wp-content/uploads/2020/06/sven-brandsma-4hXTMl7m5oU-unsplash-1024x683.jpg)
I have read, in another post that USB adds some latency, but in this particular case I believe that it is that big because this coundcard is designed to be used by DJ's, not by musicians (sorry :p). (Internal= HDA Intel PCH VT1802 / USB= ESI UDJ6 / RSD= relative standard deviation)
![usb vs firewire audio interface latency usb vs firewire audio interface latency](https://img.kytary.com/eshop_ie/velky_v2/na/637333451836800000/8ae5c328/64773089/motu-828-mkiii-midi.jpg)
(frequencies are in Hertz and times in miliseconds) There were at least five measurement for each configuration. Curiously there were some variations among different measurements (and I must confess that there was some noise because did not use appropiate cables, neither soldered them. (notice the long Pianoteq decay time compared with Kawai Harmonic Imaging (old) piano sampling technology)Īfter that, I counted the number of samples between the beginning of digital piano sound and computer's (Pianoteq) sound and calculated the delays. The recordings looked like this, I supposed that the digital piano (superior channel) had no latency. Then I repeated the experiment but using the external USB card. I installed Ubuntu Studio and again it was not possible for me to get a decent latency with the external sound card.Īs I did not know if the latency was product of my imagination, I made the following experiment: I connected left channel of the headphone out of the digital piano to the left input of the laptop's soundcard and the left channel of the laptop output to the right line input, and recorded simultaneously C6 with touch sensivity turned off. I discovered that this did not made de pops and clicks dissappear, and moreover, it was very difficult to get a decent latency using its native ASIO drivers.Īt end I buyed another laptop, a cheap one, with no operating system and an Intel Pentium Dual Core 2020m 2,4GHz, which is slightly better than the AMD, so I supposed it would work, and fortunately it did. I was suggested buying an ASIO soundcard, in my country there are some economic troubles that make we don't have many options to choose from, so I ended buying an ESI UDJ6 USB audio interface. This setup worked almost properly, with some random cracks and pops, that could be disminished by turning off wlan, webcam, and whatever I was not using.
![usb vs firewire audio interface latency usb vs firewire audio interface latency](https://aws1.discourse-cdn.com/steinberg/original/3X/f/8/f805bea5247574870127787881ef143e07b72324.png)
At first I tried with an quite old Acer laptop (4Gb of DDR2 ram and AMD Turion x2 2,2GHz processor) using its internal soundcard and Window$ 7. I play Pianoteq using an USB 2.0 MIDI interface cable model MIDIMATE II from ESI, my keyboard is a Kawai C元5. I don't know if someone has posted about this before.