Kjell Tore Innervik, research

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Glass instruments made in the NIME research project at the
Norwegian Academy of Music.

Ivar Frounberg, Alexander R. Jensenius and Kjell Tore Innervik

Evaluating the Subjective Effects of Microphone
Placement on Glass Instruments

Sound Sample

figure 5

figure 5

figure 2

  

Table 1: Subjective judgement of attack quality for

Setup 5 (1=best), columns represent attacks, rows
represent microphone placement

Table 1: Subjective judgement of attack quality for

Setup 7 (1=best), columns represent attacks, rows
represent microphone placement

 setup 15
Table 1
A
 B C
Rim

2

 

2

 

1
Half-centre

3

 

1

 

2
Centre

3

 

2

 

 1
Sum
8
5
4
Setup 7
A
 B C
Rim over

3

 

2

 

1
Rim outside

3

 

2

 

1
Rim inside

3

 

1

 

 2
Sum
9
5
4
Setup 15
A
 B C
Rim over 270

2

 

3

 

1
Rim over 300

2

 

3

 

1
Rim over 315

2

 

3

 

1
Sum
6
9
3
 

Table 2: Subjective judgement of microphone place-
ment for
Setup 5 (1=best), columns represent at-
tacks, rows represent microphone placement

 Table 2: Subjective judgement of microphone place-
ment for
Setup 7 (1=best), columns represent at-
tacks, rows represent microphone placement		 Setup 15  
Table 2 A B C Sum
Rim 1 1 1 3
Half-centre 2 2 2 6
Centre 3 3 3 9
Setup 7 A B C Sum
Rim over 3 2

2

  
Rim outside 1 1

1

  
Rim inside 2 3

3

  

Table 4: Quantitative features of microphone place-
ments for setup 7
Inside Over Outside
Setup 15 A B C Sum
Rim over 1 1 1 3
Rim outside 2 2 2 6
Rim inside 3 3 3 9

 

Table 3: Quantitative features of microphone place-
ments for setup 5
Rim Half-centre Centre

  

RMS energy 0.0049 0.0046 0.0012
Centroid (Hz) 2188 2539 3368
Spread (Hz) 33 51 79
Rollo (Hz) 2533 3710 5896		 RMS energy 0.017 0.013 0.011
Centroid (Hz) 1693 1991 1707
Spread (Hz) 9.2 9.1 12.7
Rollo (Hz) 2552 2570 2528
Flatness 0.052 0.057 0.065		  

 

figure 2

Figure 2: Setup 15 of microphones placed at 270, 315
and 360 degrees, and excitation at 90 degrees.

figure 5

Figure 3: Microphone placement 0.5 cm above the
surface, at rim, half-centre and centre positions.

figure 5

Figure 5:setup 7, Microphone setup for recording sounds at the outside rim 270, 300 and 315 degrees.

Alle lydfiler til 5 og7

 
kjell tore innervik 2010