Component parts of Reverb: Sound Fields (1)

The Music Telegraph | Text 2019/02/13 [14:07]

Component parts of Reverb: Sound Fields (1)

The Music Telegraph| 입력 : 2019/02/13 [14:07]

▲ Sound Fields: Near and Far field    

© Siemens Inc.


Component parts of Reverb: Sound Fields/Zone (1)



1) Closed field

- Integration zone

- Miking: Multi-miking recording   



2) Near field

- Transition zone

- Miking: Multi-miking recording



3) Far field

- Echo zone

- When we record ‘True-stereo’, it's done usually in far-field

- ‘Far-field’ is usually combination of all these 3 components (Closed/Near/Far field)




[side trip]

*Encoding ready: Exact imaging into recording



*Drums: Multi-miking (usually 4 ~ 5) + Ambience Mic 

▲ Drum miking

1. Kick drum ==> Closed field miking

2, 3, 4. Hihat, Toms, Symbols ==> Near field miking

5. Ambience ==> Far field miking

© The Music Telegraph

*All the prospect of mixing is done by choice of Microphone and Microphone placement whenever we go studio work of Mic




Closed Field Sound

- Increase presence

- Integration zone

- a.k.a. 'Free' field. Our perception is a pick-up of direct sound only without reverberation. Hence it's called 'Free' field. 

==> This perception is due to HAAS effect



*‘HAAS effect’

- Any sound, 35ms or less, behind and another sound is integrated into the 1 sound and not heard as a separate sound event

- 35ms is an average; the actual breakdown point of integration is depend on the 1st sound’s duration. They can be separated as short as 12ms. They can integrate up to 60 ~ 65 msec



The effect of integration is a “Comb filter effect” to the direct sound (tonality change)


*Comb filter effect => Harmonically related cancellation or reinforcement due to short delay combinations 



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