Audacity Forum

http://manual.audacityteam.org/o/man/tutorial_recording_computer_playback_on_windows.html Depending on your model of computer soundcard it may not be possible to record the sounds from the computer (e.g. YouTube) without additional software, see "Alternative programs for recording computer pla...

... I'd like to try recording under actual driving conditions so I'll be limited to having the mic on a short boom probably within no more than a metre of the tail pipe. Contact microphones are used to record noise made by engine components, which are attached to the component (in "contact&quo...

Bad news : the real-time frequency analyser I mentioned above , only has a linear frequency scale (not logarithmic) so the low exhaust frequencies (50-150Hz) are bunched-up on the far left of the (green) display ...

And neither display tell you what you need to know. Most exhaust is well below 100Hz, a suggestion of colour at the bottom of those displays. Koz OK, "plot spectrum" in Audacity's "Analyze" menu, with a log(arithmic) horizontal frequency axis shows the bassy resonant notes of th...

If the engine recording is for diagnostic purposes Audacity does have a spectrogram display ...
Other free spectrograph programs are available ...
https://en.wikipedia.org/wiki/SoX

whisperindave wrote:... when I press record I get an error message: Error while opening sound device, please check the input device settings and the project rate sample.

http://forum.audacityteam.org/viewtopic ... 72#p129172

When you slow down the digital recording of the tape to half-speed there will be a noticeable loss of high frequency content compared with playing the tape at the correct speed: the slowed digital recording won’t have anything above 10kHz, which is OK for speech but slightly dull for musical perform...

"Equalization" is in Audacity "Effect" drop down menu.

"mda talkbox" is available (free) via a link on this page ... http://wiki.audacityteam.org/index.php? ... T_Plug-ins [Windows only]

If any cat will do ... http://www.freesound.org/search/?q=cat+meow