[linux-audio-user] Analysis software?

Hi folks, I'm looking for something that can take soundfiles and display various analyses of them. Any recommendations? Something very much like what you can get with Spectralab, for example these plots: http://www.pcavtech.com/soundcards/ht1869/index.htm ... but free software and working on linux :-] Basically the main thing I need is a good display of log frequency vs. dB amplitude, averaged over the whole file, useful for e.g. getting a frequency response from a swept sine wave or white noise. Other analyses that would be handy at various times: signal to noise ratio and total harmonic distortion given a known input. Also really nice would be a clearly labelled sonogram showing log frequency against time. So far I've been using snd, which has a decent sonogram but kinda falls down on readability: e.g. it doesn't display the actual frequencies of the scale if you select log frequency, it's just 0 to 1.0 so I have to guess, or click on a part of the graph to find out about that particular spot. -- Paul Winkler http://www.slinkp.com