It is true to say that most sounds we hear are made up of many different frequencies and in my experience natural sounds contain a multitude. This was the case with recordings I made recently up in Glendalough Co. Wicklow. I captured the sounds of the famous waterfall and also a particularly animated, bubbling stream that ran off it. Even while recording I found myself tuning into the many different notes rippling out of the waters. Each time I go out to do some field recordings the experience becomes more meditative and immersive. It’s a unique way to experience a certain place by taking time out to really listen to it.
Later I took these recordings and used a technique I had recently learned to emphasise the notes within using EQ. It’s quite a simple process but basically it allows you to make a playable instrument from any source audio file. By applying an EQ to the water recordings I picked the note A3 which is found at 220 Hz and boosted this frequency using a notch filter until the note began to ring out. To further accentuate this I applied another notch at 110 Hz and 440 Hz. This gave me an octave below and above A3. I then duplicated this EQ to raise the volume of the boosted frequencies so I could now clearly hear a note emerging from the water. I then bounced this audio out and re sampled it, setting the root note of the sampler to A3. This new sound was now spread across the keyboard and I could play back the sound of the stream like a kind of water organ. I used the same technique with the waterfall recordings to create a hissing pad sound. Below is an example of this technique. Every sound here is created using the water recordings as source. It still needs some refining but I can see many possibilities in this process.
Water music 1