Re: measuring audio latency?

2010-03-10 Thread Reece Dunn
On 9 March 2010 23:48, Ben Klein shackl...@gmail.com wrote: On 10 March 2010 10:01, Avery Pennarun apenw...@gmail.com wrote: On Tue, Mar 9, 2010 at 9:15 AM, Dan Kegel d...@kegel.com wrote: On Tue, Mar 9, 2010 at 2:58 AM, Roderick Colenbrander thunderbir...@gmail.com wrote: I might be able to

Re: measuring audio latency?

2010-03-10 Thread Dan Kegel
On Wed, Mar 10, 2010 at 12:25 AM, Reece Dunn mscl...@googlemail.com wrote: Yes, absolutely, but it'd be good to make this measurement easy to repeat by anybody interested.  To do that, let's just loop the audio output back into the audio input.  The user will have to provide a loopback cable

Re: measuring audio latency?

2010-03-10 Thread Francois Gouget
On Tue, 9 Mar 2010, Dan Kegel wrote: [...] Yes, absolutely, but it'd be good to make this measurement easy to repeat by anybody interested. To do that, let's just loop the audio output back into the audio input. The user will have to provide a loopback cable Won't the DirectSound capture

Re: measuring audio latency?

2010-03-10 Thread Dan Kegel
On Wed, Mar 10, 2010 at 8:32 AM, Francois Gouget fgou...@free.fr wrote: Yes, absolutely, but it'd be good to make this measurement easy to repeat by anybody interested.  To do that, let's just loop the audio output back into the audio input.  The user will have to provide a loopback cable

Re: measuring audio latency?

2010-03-09 Thread Maarten Lankhorst
Hi Dan, 2010/3/9 Dan Kegel d...@kegel.com: Hey folks, before Maarten goes and implements wine audio on top of OpenAL, does anyone know of a nice automated tool for measuring audio latency that works on multiple APIs?  i.e. it'd be cool if one could plug in a loopback cable, run an app once

Re: measuring audio latency?

2010-03-09 Thread Roderick Colenbrander
On Tue, Mar 9, 2010 at 11:00 AM, Maarten Lankhorst m.b.lankho...@gmail.com wrote: Hi Dan, 2010/3/9 Dan Kegel d...@kegel.com: Hey folks, before Maarten goes and implements wine audio on top of OpenAL, does anyone know of a nice automated tool for measuring audio latency that works

Re: measuring audio latency?

2010-03-09 Thread Dan Kegel
On Tue, Mar 9, 2010 at 2:00 AM, Maarten Lankhorst m.b.lankho...@gmail.com wrote: I don't know about any automated way, but one could conceivably just write a program that outputs a sound at a certain frequency and tries to find that frequency back in the input. No need for a frequency - a

Re: measuring audio latency?

2010-03-09 Thread Dan Kegel
On Tue, Mar 9, 2010 at 2:58 AM, Roderick Colenbrander thunderbir...@gmail.com wrote: I might be able to measure it using my oscilloscope. Somehow I would need to play lets say the left channel 'without' latency and the other channel with and compare the two signals. Yes, absolutely, but it'd

Re: measuring audio latency?

2010-03-09 Thread Avery Pennarun
On Tue, Mar 9, 2010 at 9:15 AM, Dan Kegel d...@kegel.com wrote: On Tue, Mar 9, 2010 at 2:58 AM, Roderick Colenbrander thunderbir...@gmail.com wrote: I might be able to measure it using my oscilloscope. Somehow I would need to play lets say the left channel 'without' latency and the other

Re: measuring audio latency?

2010-03-09 Thread Ben Klein
On 10 March 2010 10:01, Avery Pennarun apenw...@gmail.com wrote: On Tue, Mar 9, 2010 at 9:15 AM, Dan Kegel d...@kegel.com wrote: On Tue, Mar 9, 2010 at 2:58 AM, Roderick Colenbrander thunderbir...@gmail.com wrote: I might be able to measure it using my oscilloscope. Somehow I would need to

measuring audio latency?

2010-03-08 Thread Dan Kegel
Hey folks, before Maarten goes and implements wine audio on top of OpenAL, does anyone know of a nice automated tool for measuring audio latency that works on multiple APIs? i.e. it'd be cool if one could plug in a loopback cable, run an app once, and get a report of the round trip audio latency