1.Give Three examples of the health and safety in the Studio environment:
In a recording studio, there is a lot of expensive and sometimes irreplaceable equipment, so my first example would be - 1: no food or drink in the recording studio, if for example you splilled drink on a mixing desk it could be ruined. 2: it is important to check all sound levels on the mixing desk before listening through headphones, a sudden blast of loud noise through the headphones could temporarily or permanently damage your hearing. 3: When using cables with objects such as microphones, always tuck them away neatly, if someone were to trip over a cable they could not only damage the equipment, but them selves
2.Describe the dB scale. how it works and the relation to human hearing.
Human hearing is non-linear, it is far more complex than that, so we have had to invent a scale to try and best approximate how we hear. It is a lolgorythmic scale as apposed to a linear scale, linea meaning that all changes are equal and constant. The human hearing is measured in decibels of sound pressure (dB spl). 0 dB represents the threshold of human hearing (the quietest possible sound we can hear)and we can hear changes at a raise in three dB which is equivalent to a doubling in sound, we use a formulae to work out the dB’s which consists of two powers, one known and one unknown to work out dB’s, this is a very close approximation.
3.Give two examples of the practical implications of phase.
Phase is when two sound waves interact with each other. you can experience either partial or full ‘phase cancellation’ when there is a 180 degrees( for complete, less for partial) difference between two sound waves. complete phase cancelation would result in a no signal being emitted at all. to listen to weather a track has certain aspects that are out of phase it is wise to listen to to it in mono to detect these, for example if a bass live is slightly out of phase you would loose some some the lower frequencies. 2. You can also use phase as a effect,using it to simulate room acoustics and create variations of the original sound
4.Explain how analogue and digital systems represent audio
Analogue is represented in audio as a direct translation of sound waves converted into an Ac current, this means that evan if an analogue recording is damaged, or an analogue signal is not coming through at full ( eg- if a cable is slightly damaged) it will be partially represented ( just at a lower quality ), digital however takes the sound-waves and puts them through a Analogue to digital converter , chops the sound up into lots of tiny pieces in binary code, and then re-assembles the pieces to make a digital representation of the sound, unlike analogue if the signal is damaged there will be nothing represented that we can make sense of . A good quality digital recording relies greatly on good Analogue to Digital and digital to analogue converter. The greater the ‘Sample rate’ the more pieces , or ‘snapshots’ of the sound will be taken, and therefor the better the digital representation of the sound rate. Analogue is generally seen as being the true representation of sound, while digital is viewed as not always capturing a true representation, but digital quality is now so high that this statement is becoming less and less relevant.
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