Understand between various audio file formats

 Understand between various audio file formats

Analog and digital sound

Analog waveform is continuous and has successice crest and troughs that represent highs and lows of your voice where as digital waveform is like barchart where highs and lows are represented by number

The quality for digital sound wave is linked to its sampling rate cd has a quality of 44100 samples per seconds (44.1khz) which is a quite good representation for our ears

Lossless vs lossy

These are two kinds of digital audio format

Lossless file is made without any losses relative to original track

In lossy format some some information that is unnecessary for listeners such as sounds that we cannot hear are discarded

Lossless format include wav, falc, aiff and apple lossless

Inside lossy format

Lossy formats other than the popular mp3 are wma aac mp2 and ogg. The difference between these format is the multiple encoding technology used

Other format has variable (vbr) or constant bitrates(cbr) . some format have variable bitrates, since they use higher bitrate for complex segments of the file and lower for the other segment

Vbr format have better quality to save space ration compare to cbr ones

Even inside each format there are different kind of bitrate for example mp3 usually found in vo ~245kbps v2 190 kbps and 320 kbps


Flac files are bigger than mp3 files. This is because of their bitrate

Bitrate is the amount of information processed per second whenever you play a file


What is api 

Api stands for application programming interface 

Apis serve different purpose, allowing people to add feature of their own to application, 

Apis are various functions that five developer the ability to remotely access a web service or os and build a client for web service

Apis allow developers to acces twitter server without security risk

Api makes your application look uniform to others

Android app share some aspects in common with other android apps,

The buttons look similar and scroll bar is identical on most of them

Api objects provided by android’s operating system

Help to form uniformity in application item

Bluetooth 5

Used to connect various device, it can transfer filea and share internet connects


Its speedy, about twice as fast as previous verision (4.2) 

It has 5mbps bandwidth in comparison to 2.1 mbps bandwidth of Bluetooth 4.2

Packet transmission will increase to 2mb/s 

Ot jas omcresed range of signal by decreasing bandwidth up to distance of nearly a mile 





  



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