<u>Answer:</u>
<em>Digital audio </em>
<u>Explanation:</u>
A transducer is a devices which converts energy in one form to another. A speaker is one type of transducer which converts electrical energy into mechanical energy.
<em>Lossless audio:</em> It is a compressed audio format where it stores the audio occupying lesser space without losing any data and can be stored in the digital medium.
<em>Analogy audio:</em> Recording audios in original sounds. Before coming into digital world, records are recorded on the magnetic tape.
<em>Digital audio:</em> Converting audio in 0’s and 1’s which the computer understands.
Answer: Requirements phase
Explanation:Requirement phase in the SDL(secure development life-cycle) is the phase where the security is fused with integrity part for any product. This mechanism is done to know about the requirement of the product in the security field. This is done to achieve the completeness in the product and to recover the mistakes that had happened earlier in the product due to security issues.
Other phase given in the option are for making the code, designing the model of product and testing the products aspects respectively.
