No we’re not the “welcoming committee”, we’re enthusiastic Audacity users, part of a community of people that have interests in audio editing, open source software, and in particular “Audacity”. As in every community, not everyone always see eye-to-eye, but we try and keep it friendly. Koz has a well known reputation on the forum for having a unique style of descriptive metaphor, and often appearing grumpy, but he is a much valued contributor to the forum and has helped literally hundreds of people to overcome their difficulties in using Audacity.
We are also forum “moderators”, which essentially means that we have the job of removing spam from the forum. With over 30,000 posts to the forum (you missed a “0”), the forum acts as a strong spam magnet. The measures that are employed (including moderation) are essential to prevent the forum from being overrun by spam, which would happen very rapidly and render the forum useless.
A you have categorically stated that you have no affiliation with that podcast, I do of course accept our word, though interestingly my initial impression of your first post was also that you were the podcaster, or friend of the podcaster. “My friend has a problem, can you help him?”. I guess that is just one of the shortcomings of communicating in text.
Back to the problem - There is noticeable “wind blast” on the recording when sounds such as “p” and “b” are pronounced. This is a common issue and is caused by a blast of air from the mouth striking the microphone causing a low “thud” type sound. The problem occurs when the microphone is used close to the mouth and can be avoided in a couple of ways.
When using a conventional recording microphone, a “pop shield” can be placed between the speakers mouth and the microphone to prevent the wind blast from striking the microphone. See here for an excellent short article about using pop shields: http://www.soundonsound.com/sos/may05/articles/popshields.htm
When using a headset microphone, the microphone should be carefully positioned to the side of the mouth to ensure that it does not catch any direct blasts of air from the mouth or nose.
Once the recording has been made, it is difficult to remove these “pops” without adversely affecting the quality of the recording, which is why avoiding the pops during the recording process is so important. However, some degree of improvement is possible by applying a “high pass filter” to the recording to cut out frequencies below the frequency range of the voice. Somewhere around 100Hz would be about right.
Audacity 1.3.6 includes a suitable high pass filter as standard. Earlier versions of Audacity require that you add a high pass filter as a “plug-in”. See here about plug-in effects for Audacity: http://audacityteam.org/download/plugins
The major problem that you were initially asking about “the voice is too annoying. Sounds robotic actually or like his mouth is wired shut or he’s trying to sound like a broadcaster?” is rather more difficult.
Changing the voice is a bit like changing the face of a portrait photograph so that it looks like someone else.
Following this analogy a bit further, if you were changing a picture of someone’s face in a graphic editing program, there are various things that you could do - change the colours, apply a “blur” effect, stretch it or squash it, pixelate it, make it darker or lighter… but non of these effects will change an ugly face into a pretty face. The only way to achieve that is to replace the face with someone else’s face. (cut out the face and drop in a different persons face).
A similar method would commonly be used in professional recording situations - the speaker would be replaced by someone with a better “radio voice”. This is one of the reasons why professional radio presenters and voice over actors are employed.
With Audacity, you can blur, squash, stretch, or otherwise distort the recording, but if you want to make it sound like someone else, then the method would be to go through the podcast and transcribe the text, then record yourself, or someone else reading the text and replace the original voice recording with your new recording.