a) Is it possible to record telephone interviews through VOIP applications such as Skype?

b) What are the kinds of microphones used for recording audio?

c) What is the best possible position of placing a microphone for recording interviews?

a)   Is it possible to record telephone interviews through VOIP applications such as Skype?

Yes it is possible – customized applications need to be installed on to a computer, and to know more about freeware or pay-n-use applications that can record Skype calls, click on this link given below
     skypetips.internetvisitation
Some of the applications listed on this site can in fact be used to record streaming audio and video on the internet besides recording Skype telephone calls. So if you wish to record streaming media such as Podcasts or Webcast for transcriptions, these applications can be useful.

b)   What are the kinds of microphones used for recording audio?

The two most common types of microphones are: omni-directional and directional (a.k.a. cardioid). The omni-directional microphones are to be avoided, since they pick up sound from all directions.
The directional microphone when used for recording does not pick extraneous sound in the background. It picks sound only from the direction it is pointed to without recording the background noise
In order to get the best sound quality, avoid using built in microphones on recording equipments, because most of them are of inferior quality.

c)   What is the best possible position of placing a microphone for recording interviews?

The ideal position is to place it as close to the interviewee as possible, microphones function under the Inverse –Square methodology, meaning double the distance lower the audibility of the sound, therefore it is essential to place the microphone 2 feet away from the speaker and ensure that it points directly at the speaker.

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