Noise and poor acoustics at home are among the biggest, albeit often invisible, enemies of effective learning. Before you buy new notebooks and a backpack, take care of the most important thing – a quiet and conducive environment for doing homework. Scientific research clearly shows that children are significantly more sensitive to noise than adults, and sounds like the hum of a dishwasher, background conversations, or echoes in a room can dramatically lower their ability to concentrate and understand text.

A constant sound level over time that produces the same energy effects (has the same square of acoustic pressure) as a time-varying measured signal.

How many songs have you listened to today? How many conversations have you had? And have you ever wondered how it happens that we hear? How does what someone says reach us? To answer this, we should start with what sound is.

Have you ever walked into an empty, minimally decorated room, clapped your hands, and heard a strange, metallic sound reminiscent of a quick "zzzing"? This unpleasant feeling, often compared to the fluttering of wings, is one of the most common and yet most irritating acoustic phenomena.

Impulse noise is the most dangerous type of noise for human hearing. It is a specific form of non-stationary noise, consisting of individual sound events or sequences of them, with a duration of less than 1 second. This type of noise is also characterized by a strictly defined maximum sound level, exceeding the value of its equivalent A-weighted sound level by more than 10 decibels.

This is a law formulated by Ernst Heinrich Weber. It is used to express the relationship between the physical measure of a stimulus and the sensory response (e.g., vision or hearing). It is also known as the strength of sensation. This law arises from many practical observations and has numerous technical applications.

The attribute that allows distinguishing between sounds of the same pitch and volume but coming from different sound sources. Timbre depends on the sound spectrum, meaning the content of the harmonic frequencies, their quantity and intensity, as well as their synchronicity, the shape of the sound envelope, the shape, and the rise time of the sound.

Almost everyone has heard of a decibel at least once in their life, but what is it really? Let's try to explain it. A decibel is primarily a logarithmic and dimensionless unit. This simply means that it defines a measure of ratio magnitudes and requires some reference, as it is not an absolute scale unit in itself – like, for example, a meter. Everyone knows how long a meter is.

Many people have encountered the concept of reverberation in a room, but few realize how this phenomenon occurs, what causes it, and how to combat it.