So I've been researching into this a lot lately as I want to learn just exactly what pitch is coming from my speakers but I'm getting confused. If pitch changes with temperature/speed of sound and 1hz is always the speed of sound. Then when using a midi instrument or electronical instrument.. how do you really know what frequency is coming from the speakers? Would tuning to say.. 256 hertz actually give you a 256hz tone from the speaker it comes out of? I want to know the exact frequency of the pitch coming from the speaker.. I just can't seem to find any info I can make sense of! I found a useful converter for working out the change in pitch depending on temperature but my problem now is.. where does it start? I mean how would I know what pitch to convert from.