Sound Archive

Why does our Voice Sound Different when Recorded?

You must have ever heard your voice from a recording and you have thought that it sounds different. It could also be that you thought it was not your voice because it sounded sharper even shrill, different from the voice you are used to hearing, right? Do you know why does this happen?When you hear a recording of your voice, you are hearing the sound that reaches your ears through …

Sound Science with Homemade Musical Instruments

We like to make homemade musical instruments because they are a fun and creative way to understand how sound and vibration work. Today we will teach you how to build a “piano” in which sound is produced by vibrating wooden sticks of different lengths. The idea can be found here. You need some wooden craft sticks (the largest), a strip of wood and two clamps. The simplest way to explain …

Experiments with Musical Instruments: Guitar

One of the easiest ways to understand how sound is produced is by carrying out experiments with musical instruments. We suggest making a simple guitar to play and experiment with vibration. The best thing about this idea is that it is very easy to do and educational for all ages. For smaller children, we made the guitar ourselves and let them explore and experiment with it freely. The older children …

Sound Experiences in School Education

As I was saying in our previous post, today we present a project called: “O ritmo do son” (The rhythm of sound) that we experienced in the last edition of Science in Action. This project is jointly developed by educators from three Primary Schools (Carricanta, Os Cativos y Monte Alto) together with a Vocational Training Centre (Ciclo formativo Educación infantil Anxel Casal) from A Coruña. It aims are to provide an …

Sound Transmission and Amplification

Whether at home or at school, it’s interesting how children have access to various materials that can discover and use freely. They have great opportunities to develop their imagination and of course, also their scientific spirit. During the last week, playing with tubes of different materials (cardboard and plastic), shapes (flat and corrugated) and different lengths arose spontaneously. The boys began to experiment with various tubes, finding that the sound …

Sounds and Vibration Experiments

Continuing with our sound research and experiments, we will set up and build an original and simple instrument that will allow us to investigate sound generation due to vibration. The construction is very simple. We need two wooden sticks (Popsicle type sticks or the ones you can get in crafts shops), a thick rubber band, two thin elastic rubber bands and a straw. Stretch the thick rubber band around the …