Audacity Forum

I wish to remove man made (low frequency) noises like cars, planes etc from the birdsong (HIGH FREQUENCY). Use a "High Pass Filter". I wish to see visually the bat sonar on a frequency spread versus time display that I have seen in the past but can not find out how to do so now. The audio...

Which version of Windows?

Not having a "LADSPA" person (developer) is also a stumbling block.
I think I'm going to leave this now until Audacity 1.3.13 has been released, then see if there is any support from QA or devel.

You may have an expired demo version of a plug-in installed.

kozikowski wrote:20dB is the limit?

For the sliders, yes.
Hardware graphic equalizers typically have a +/- 15 dB range. If you need more than +/- 20 dB, switch back to the "Draw Curves" view.

tfrog wrote:I'm still getting bleed through of the opposing channel.

It's possible that the bleed-through may be on the tape. As tapes age the stereo separation tends to blur. Are you able to test one of the tapes on another tape player?

Onward and Upward

Sorry, I did the same thing as Windows does - I misread your question. If you are using a USB "microphone", then my previous post is correct. A USB turntable looks like a microphone to Windows, so Windows sets it as a mono device. However, because the turntable is really a stereo device yo...

MP3 format is imprecise - it's a "lossy" compression format http://en.wikipedia.org/wiki/Lossy_compression If you encode a wav file that has peaks up to 0 dB, and then decode the file to 32-bit float format (32-bit float format can support values over 0 dB) it is quite common that a few sa...

Canellas wrote: I have about 50 mp3 files, and I would like that all of them would have the same volume level.

Depending on your MP3 player, the best way to do this may be to use "Replay Gain" http://en.wikipedia.org/wiki/Replay_Gain