• Article

    Sound quality

Dr Sound explains the reverb phenomenon

Hi, John-Erik here again. Or as some of you might know me, as Dr Sound, acoustic designer here at Konftel. In this post we will me address another common sound phenomenon, namely reverb.

Reverb and decay are all terms used to describe a gradual decrease in sound. It is measured in the unit RT 60, which is the time in seconds it takes for an impulse sound to decrease by 60 decibel. Most of the sound picked up by a conference telephone microphone, comes directly from the speaker’s mouth. But the microphone will also pick up sounds of the speaker’s voice that has bounced around in the room. This bouncing is what causes the reverb.

Reverb is the time in seconds it takes for a sound to decrease by 60 db.

 

This bouncing of sounds is really what gives a room its character and it varies depending on the size of the room, the wall, floor and ceiling materials as well as the temperature. The shape of a room also has an effect. Sound in a long hallway is perceived quite differently than sound in for example a smaller conference room. When recording music or video, reverb can be used as an effect to create a fuller sound or to simulate a specific ambiance like a large church or a smaller room. Too much reverb can interfere with the direct sound and mask it. In a teleconference for example, too much reverb can decrease the clarity of the sound , making it harder to hear what is being said. This can be avoided either by dampening or improving the acoustics in a conference room. Or just by sitting closer to the microphone, so that direct sound isn’t masked by reverb.

 

Too much reverb can decrease the clarity of the sound. This can be avoided by dampening or improving the accoustics in a room.

 

To eliminate this problem, conference phones can utilize various microphone techniques depending on how the phones will be used. Microphone placement and configuration are two examples of techniques that can be utilized to solve reverb issues. Equalization is another way of improving sound quality by bringing out the nuances of speech.

The goal is that conference phones should work satisfactorily even in difficult environments. Everyone should also be able to sit comfortably during the conversation and not need to hunch over their phones to hear or be heard.

Do you want to hear me talk about reverb and listen to some examples? Check out this video that covers it.

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Holli Hulett
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Peter Gasparro
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Holli Hulett
Holli Hulett
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Holli Hulett
Holli Hulett
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Holli Hulett
Holli Hulett
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Peter Gasparro
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Holli Hulett
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Simon Chin
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Holli Hulett
Holli Hulett
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Holli Hulett
Holli Hulett
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Holli Hulett
Holli Hulett
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Jörgen Rönnqvist
Jörgen Rönnqvist
Area Sales Manager Nordic and Baltic countries

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Mattias Hedin
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Holli Hulett
Holli Hulett
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Holli Hulett
Holli Hulett
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Holli Hulett
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Holli Hulett
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Jörgen Rönnqvist
Jörgen Rönnqvist
Area Sales Manager Nordic and Baltic countries

Mattias Hedin
Mattias Hedin
Key Account Manager



Jörgen Rönnqvist
Jörgen Rönnqvist
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Mattias Hedin
Mattias Hedin
Key Account Manager


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Jörgen Rönnqvist
Jörgen Rönnqvist
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Holli Hulett
Channel Manager



Peter Gasparro
Peter Gasparro
Regional Sales Director

Holli Hulett
Holli Hulett
Channel Manager



Holli Hulett
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Channel Manager



Simon Chin
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Regional Sales Director APAC



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Jörgen Rönnqvist
Area Sales Manager Nordic and Baltic countries

Mattias Hedin
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Key Account Manager



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Regional Sales Manager - India & Middle East



Jeff May
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Regional Sales Director

Holli Hulett
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Channel Manager



Simon Chin
Simon Chin
Regional Sales Director APAC



Ralf Kalker
Ralf Kalker
Regional Sales Director
+49 (0)221 959 2220


Jeff May
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Regional Sales Director



Simon Chin
Simon Chin
Regional Sales Director APAC



Ralf Kalker
Ralf Kalker
Regional Sales Director
+49 (0)221 959 2220


Jörgen Rönnqvist
Jörgen Rönnqvist
Area Sales Manager Nordic and Baltic countries

Mattias Hedin
Mattias Hedin
Key Account Manager



Ralf Kalker
Ralf Kalker
Regional Sales Director
+49 (0)221 959 2220


Jörgen Rönnqvist
Jörgen Rönnqvist
Area Sales Manager Nordic and Baltic countries

Mattias Hedin
Mattias Hedin
Key Account Manager



Jeff May
Jeff May
Regional Sales Director



Holli Hulett
Holli Hulett
Channel Manager



Ralf Kalker
Ralf Kalker
Regional Sales Director
+49 (0)221 959 2220



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Jeff May
Jeff May
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Jeff May
Jeff May
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Jörgen Rönnqvist
Area Sales Manager Nordic and Baltic countries

Mattias Hedin
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Holli Hulett
Holli Hulett
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