Subject:Frequency band display in Audio Studio?

Posted by: AnthonyGA

Date:1/22/2012 11:33:57 AM

Does the Audio Studio version of Sound Forge provide any kind of display that shows the sound energy in different frequency bands, like you see in some graphic equalizer displays? I just want to see how much of the sound is in which frequency band, which is very difficult to infer just from looking at a waveform.

Subject:RE: Frequency band display in Audio Studio?

Reply by: Geoff_Wood

Date:1/22/2012 1:50:00 PM

Spectrum Analysis is included in SF Pro, but not , I believe, SFAS.

You can obtain SA plugins that will give you that function - google "spectrum analyser analysis vst "

geoff

Subject:RE: Frequency band display in Audio Studio?

Reply by: ChristoC

Date:1/22/2012 2:28:46 PM

indeed, if SFAS supports VST, then look at http://www.voxengo.com/product/span/ which is free and excellent

Subject:RE: Frequency band display in Audio Studio?

Reply by: AnthonyGA

Date:1/23/2012 7:43:42 AM

It looks like VST is indeed supported in Audio Studio (!), and the SPAN plug-in from Voxengo seems to work perfectly. Thanks!

Subject:RE: Frequency band display in Audio Studio?

Reply by: AnthonyGA

Date:1/23/2012 12:18:43 PM

Hmm, I see something puzzling: the changes in the displayed analysis in the plug-in seem to precede the actual sound in my headphones a bit. I don't think it's a problem of computer speed because I see the changes on the display before I hear them, rather than after. Is there something I have to adjust to make them line up, so that, say, the clap of a hand appears on the spectrum analysis at the same time that I hear it?

Subject:RE: Frequency band display in Audio Studio?

Reply by: ChristoC

Date:1/23/2012 2:28:07 PM

That is called 'latency' my friend!

Although all digital systems will exhibit some degree of latency, the delay can be reduced depending on your Soundcard capabilities & specifications, and which Drivers you are able to use.... generally ASIO Drivers will give lowest latency when set to low buffer size.

Generally, VST fx also cause a latency when the fx is used in 'series' or as an insert plugin - put simply, the signal flows out to the VST (which is processed by your CPU) then back again.... there is some associated additional buffer delay. Unless the host application can compensate for that often what you see in the VST GUI can be ahead of what you hear.