On Tue, 28 Aug 2012 12:52:24 +0100 Harry van Haaren <[email protected]> wrote: > I use Fons' JAAA for this. It has a "freeze" button, so when you hear > a low note, you'll see it, then hit freeze, then there's peak > analysers that you can place on the display, and it'll tell you its > Hz (and estimate a note). dB can be read right off the Y axis.
Better use japa and then use the setting where the line isn't going down (or is going down _very_ slowly). Use the accuracy as you like. But somehow I suspect the "lowest frequency" will be some kind of rumbling noise from either a mic stand or from some synths/effects unwanted subharmonics. You should set a minimum amplitude below you ignore a frequency as "lowest frequency". If you don't do it, you are limited by 1/(2*window_length). And given that you have a) noise in every recording/audio and b) a single almost delta-peak will have all frequencies, you will also have frequencies down to the minimum detectable by fft... Have fun, Arnold
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