Sunday, April 1, 2007

AA 1 week 5

In this weeks exercise all samples are made with the microphone approx. 1 metre from the sound source and on axis. This was for my own benefit as I have not had much experience with different types of mikes and thought that this would give me the best examples of the differences between the various types.

Sample 1 & 2

Samples one and two were both recorded using a Neumann U-87 microphone. There was one sound source, (guitar) that was on axis while a second sound source was at 90 degrees (someone couting to ten). The first recording was using the omni pattern on the U-87, whilst the second used a figure eight pattern. The result was that the omni sample picked up both sources evenly, whilst in the figure 8 pattern the sound source that was at 90 degrees sounded a little diastant. The Neumann U-87 is a condenser microphone with Omni, Figure 8 and Cardioid patterns. Its range is 40-16000 Hz.[1]






Neumann U-87 omni

Neumann U-87 fig 8


[3]
[3]



Sample 3

Beta57 microphone was used. Being a dynamic microphone (ie with wire wrapped around the diaphram[2]), I found that the gain had to be boosted to record the same guitar part as in examples 1 & 2.

Shure Beta57

Sample 4

Behringer XM2000S (also dynamic) required more gain to pick up a signal. The guitar source was at the same distance as in all the samples so far. This sample seemed to sound a little warmer than the beta57.

Behringer XM2000s

Sample 5

Rode NT4, a stereo microphone with a cardioid pattern with a range of 20-20000 Hz[1]. This microphone requires a special canon lead that has a female end with holes for five pins, whilst the other end has the normal three pins except for the fact that there are two of them. This mike also needs to be recorded into a stereo track (see below red track)

Rode NT4

[1]http://www.emu.adelaide.edu.au/resources/guides/hardware/microphones.html

[2] Fieldhouse, S. "Audio Arts Lecture week 5" at University of Adelaide 23/03/07

[3] Streacher, R.In "Choosing the right microphone" at http://www.rycote.com/information/ Accessed 31/03/07


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