Hi, On Friday 02 Feb 2007, Dominique Michel wrote: > Which instrument can play a note below 20 Hz? Even the biggest church > organs cannot do that. The fundamental of Bass C (the bottom note on an organ with the normal compass - two octaves below middle C) on a stop speaking at 32' pitch is about 16Hz if my maths isn't playing tricks on me. 32' stops are fairly common, at least on English-style organs - most larger instruments have at least one on the pedals. A few organs can play at 64' pitch which would give an 8Hz fundamental for Bass C - meaning the entire bass octave and part of the tenor octave would be sounding below 20Hz! While we can obviously only hear harmonics of these notes, it is possible to feel the fundamentals, at least on the more powerful stops. I have often thought that it would be nice (at least for me, if not for the neighbours :) to be able to reproduce that aspect of a performance, but most recordings don't even include those sorts of frequencies (at least, not at a useful level) probably mainly because of the limitations of the equipment used to capture them. Regards, Stephen ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier. Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user
