Audio It is a term that comes from the English language, although its most distant etymological antecedent is found in Latin. The concept of audio is used to name the technique which enables record, transmit and reproduce sounds.
For example: “My son is a specialist in audio engineering”, “I have been reading several manuals on the Internet to learn about audio and thus be able to improve the recordings we make”, “Do you know someone who knows audio? I would like to record some songs with my band “.
Audio is called, on the other hand, sign corresponding to sounds. It can be said that an audio is a analog signal which, electrically, is equivalent to a sound signal. Its frequency is between 20 and 20,000 Hz, which is the range that a human being can hear.
A microphone allows you to convert the sound waves (which are air pressure waves) in a analog electrical signal (the audio). To perform the reverse process, a loudspeaker (or speaker), which transforms the analog electrical signal back into a sound wave. In this way, when a singer performs his songs with a microphone and the sound comes out through loudspeakers, the audience listen to the audio.
Like the image, the audio is characterized by the fact that each individual can perceive it in a different way, with particular nuances or associations. This does not mean that while a person hears a natural fa another hear a retainedRather, the same note, the same melody can provoke different sensations in each one.
Similarly, not all of us have the same talent for recognizing sounds, memorizing songs, and reproducing them accurately. If we add this to what was expressed in the previous paragraph, it is easy to understand that the same fountain audio (be it a song, a melody or a work made up of many pieces) cannot be described in the same way by a large group of people.
In the case of digital audio, the analog electrical signal that is responsible for the representation of the sound wave is digitally encoded. The format WavTo cite one case, it presents digital audio with the entirety of the information resulting from encoding. The format MP3Instead, it compresses the data.
The formats Audio and the different technologies used for its transmission cause various complications for users, since many times they must face the purchase of adapters and converters to overcome incompatibility problems between their equipment. It does not matter how much money we have spent on a home theater system: if it does not support a certain format that one of the devices that we wish to connect to it requires, then we will have to make a decision that will surely lead us to a new monetary investment.
Audio, finally, is a element compositional that alludes to sound and the act of hearing: audiovisual, audiobook, audio frequency, etc.
The incorporation of audio in the film industry took more than three decades to wait, during which time what we know today as Silent movie, silent period or the age of silver screen. In a nutshell, Until 1929, most films only featured images, although in some projection rooms there was a pianist who played different melodies as an accompaniment, or even orchestras dedicated to recreating certain effects Sound.
Nowadays, audiovisual content represents practically the standard, in large part due to the success of the YouTube social network, in which there is no limit to the genre of the contents: from reviews of news that could perfectly be published in writing to series and complete films, on this platform audio and image coexist as if they were interdependent.