Introduction to Room Acoustics: Part 1

This is an introduction to some basic concepts and vocabulary in the general area of room acoustics - with explanations and live demos. I make a couple of sweeping statements in here - but the idea is to help to provide an intuitive understanding of what's going on... Not to help you design a concert hall...

Note that all of the acoustical effects that you hear in this video are actually happening because of the surroundings. No extra artificial effects were added.

I'm standing 1 m in front of the camera in all locations (except when I'm not...) and the zoom is set to the same focal length (28 mm) - so I'm not playing any tricks with the camera - at least not intentionally.

The microphone pair was kept in the same configuration for the whole video (coincident hypercardioids with an included angle of 110 degrees, placed just below the camera's lens - if you're interested). The gain of the microphone is the same in all locations for the entire video - except for the one short segment where I say that I've dropped the level...

There are a couple of segments where I talk about switching from stereo to monophonic playback. During the mono sections, the microphones are switched to a pair of coincident hypercardioids, both facing straight forwards. This is not really the same as simply summing the two channels in the stereo version - which is why you'll hear a slight gain change on the on-axis sound sources.

Видео Introduction to Room Acoustics: Part 1 канала geoff martin