Sunday, 16 June 2013

Glossary

ADC
analog to digital converter works by converting a real life analog sound into a digital sound by converting the sound waves into binary code numbers. It does this by using  digital-to-analog converter however, since sound waves can only be picked up using the digits 0 and 1 which works as on and off switches. Here is a link to a video explaining this-





Alias frequency-



Binary

Because we as a people aren’t programmed to work thingsout in binary code, we work out things in something known as base 10. Forexample when we write something like the number 23,469- we’re doing this byusing the 10’s 100’s and thousands column. The only way that computers can understand something is by interpretingit into binary 2- which means that the only way a computer can understandsomething is using the digits 0 and 1. When using something like binary, the onlyy digits that can be used are: 1, 2, 4, 8, 16, 32, and 64.  For example, making something like the number 30,we would have to use this If we were trying to get to the sum of 3.0. In binarythis would look like: 11110




Bit depth ‘Bites’- this is just information in the form of 0’sand 1’s, so that computers can understand them, which can then be recorded for eachsample. There are thing called ‘bit depth’ for example you could have say ‘4bits’ or ’16 bits’ of information but the largest of all is ‘24 bits’ (6x4Thelargest bit depth is 24 bits because we would not be able to pick up anythingmore than that, as we are human.
Clipping- The term ‘clipping’ is used when something isincredibly loud. Something like a amplifier has a limited range of volt output,if you try and stress it, then it will sound distorted, and there is only a certainlevel of voltage output.  Let’s say wehad a diagram explaining this. The highest frequency would be ’10 DB’, whichmeans that anything louder than this will make it sound ‘piece’ and distorted.


 DAC- A digital audio converter takes digital info andconverts into audio info. This, as a whole, works as an entire system.  For example, I can take something like acomputer or even an mp3, and in turn, it will take the digital information andchange it into audio information, and it does this by changing into 0’s and 1’s.You can then get something like a stereo or headphones and listen to theplayback.


 DBFS- We use ‘Decibels’ to estimate something known as ‘soundpressure’. Whenever a decibel reaches its peak we call that ‘full scale’.Although it’s unexpected, 0 is the highest level of decibel- (full scale) butwhen turned down, it goes down into a minus value (-1,-2,-3). 6dBFS is the maxlevel below minus that a dB can hit (-6db).


Dither- Dither is an incredibly faint, and very low-It givesoff more of a white noise effect. For example when changing something that’s 24bits, and you’d like to change it to 8 bits, so that the data can fit ontosomething like an mp3 or a Cd then you can fit in the dither effect so that youdigital signals can run without distortion. There is no way for us topick up ‘dither’ in our ears. All dither does when used, is allow the tracksusing dither to run clearer and cleaner- making it sound normal/natural.




Digital audio interface- digital interface is what makes the connection between the 



 Digital effectsprocessor-



Digital mixing console-



Sample rate- sample rate is the amount of analog data record in 


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