• Article

    Sound quality

Dr Sound explains sound levels

Hi, John-Erik Eriksson, you know, Dr Sound here. It’s time for another post from the exiting world of sound and acoustics and this time I’m taking you on a tour through the concept of sound levels.

It’s easy to think in simple terms about volume – turn it up to hear better… or turn it down to make it more quiet… But it’s all a balancing act where it’s important to consider how the sound will actually be perceived to the human ear at different sound levels.

For example, the ear is less sensitive to bass sounds at lower volumes, so if we increase the volume we can at the same time reduce the bass to make speech appear clearer. We do this with a feature called loudness. Another benefit of this is that less bass energy is transferred to the room. And that is a good thing because many rooms have problems with bass reverb.

With conference calls, we want even sound levels, and a broad frequency range. After all, the basic idea with teleconferencing is to simulate face-to-face meetings. So we try to create the feeling of being in the same room, just in front of the person we’re talking to.

Nowadays, teleconferences are held in large rooms and this means longer distances between users and devices.


During conference calls, we naturally don’t want to be hunched over the phone. Traditional speaker phones, were designed for a distance of 50 centimeters between the user and the device. Nowadays, teleconferences are held in large rooms as well and this means longer distances between users and devices. This is why the reference distance has been increased from half a meter to one and a half.

Since it’s equally important to hear as well as we did before, the volume must be doubled. In other words, we have to increase it by 10 decibels why it’s important that the conference phone at the receiving end has the power to handle this.

The transition from narrowband to wideband enables a significantly broader frequency range which improves clarity and the sense of presence for conference calls.

 

Another benefit of the development in communications technology is the transition from narrowband to wideband. This enables a significantly broader frequency range for the sound, which improves clarity and the sense of presence for conference calls.

Do you want to hear me talk about sound levels and listen to some examples?

Check out this video that covers it.

Finn en forhandler

Jörgen Rönnqvist
Jörgen Rönnqvist
Area Sales Manager Nordic and Baltic countries

Mattias Hedin
Mattias Hedin
Key Account Manager



Patrick Wiltse
Patrick Wiltse
Regional Sales Director



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


Jeff May
Jeff May
Regional Sales Director



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


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


Peter Gasparro
Peter Gasparro
Regional Sales Director

Patrick Wiltse
Patrick Wiltse
Regional Sales Director



Nipun Khanna
Nipun Khanna
Sales director for Southern Asia and ME



Peter Gasparro
Peter Gasparro
Regional Sales Director

Patrick Wiltse
Patrick Wiltse
Regional Sales Director



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


Patrick Wiltse
Patrick Wiltse
Regional Sales Director



Peter Gasparro
Peter Gasparro
Regional Sales Director

Patrick Wiltse
Patrick Wiltse
Regional Sales Director



Patrick Wiltse
Patrick Wiltse
Regional Sales Director



Patrick Wiltse
Patrick Wiltse
Regional Sales Director



Peter Gasparro
Peter Gasparro
Regional Sales Director

Patrick Wiltse
Patrick Wiltse
Regional Sales Director



Patrick Wiltse
Patrick Wiltse
Regional Sales Director



Simon Chin
Simon Chin
Regional Sales Director APAC



Patrick Wiltse
Patrick Wiltse
Regional Sales Director



Patrick Wiltse
Patrick Wiltse
Regional Sales Director



Patrick Wiltse
Patrick Wiltse
Regional Sales Director



Jörgen Rönnqvist
Jörgen Rönnqvist
Area Sales Manager Nordic and Baltic countries

Mattias Hedin
Mattias Hedin
Key Account Manager


Dine lokale forhandlere

Vis alle
Patrick Wiltse
Patrick Wiltse
Regional Sales Director



Patrick Wiltse
Patrick Wiltse
Regional Sales Director



Patrick Wiltse
Patrick Wiltse
Regional Sales Director



Patrick Wiltse
Patrick Wiltse
Regional Sales Director



Jörgen Rönnqvist
Jörgen Rönnqvist
Area Sales Manager Nordic and Baltic countries

Mattias Hedin
Mattias Hedin
Key Account Manager



Jörgen Rönnqvist
Jörgen Rönnqvist
Area Sales Manager Nordic and Baltic countries

Tero Huovinen
Tero Huovinen
Sales Representative Finland


Dine lokale forhandlere

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


Holger Klenner
Holger Klenner
Key Account Manager Germany
+49 (0)2173 499 5841
Ralf Kalker
Ralf Kalker
Regional Sales Director
+49 (0)221 959 2220


Dine lokale forhandlere

Vis alle
Jörgen Rönnqvist
Jörgen Rönnqvist
Area Sales Manager Nordic and Baltic countries

Mattias Hedin
Mattias Hedin
Key Account Manager



Patrick Wiltse
Patrick Wiltse
Regional Sales Director



Peter Gasparro
Peter Gasparro
Regional Sales Director

Patrick Wiltse
Patrick Wiltse
Regional Sales Director



Patrick Wiltse
Patrick Wiltse
Regional Sales Director



Simon Chin
Simon Chin
Regional Sales Director APAC



Jörgen Rönnqvist
Jörgen Rönnqvist
Area Sales Manager Nordic and Baltic countries

Mattias Hedin
Mattias Hedin
Key Account Manager



Nipun Khanna
Nipun Khanna
Sales director for Southern Asia and ME



Jeff May
Jeff May
Regional Sales Director



Peter Gasparro
Peter Gasparro
Regional Sales Director

Patrick Wiltse
Patrick Wiltse
Regional Sales Director



Simon Chin
Simon Chin
Regional Sales Director APAC



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


Jeff May
Jeff May
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



Patrick Wiltse
Patrick Wiltse
Regional Sales Director



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



Dine lokale forhandlere

Vis alle
Jeff May
Jeff May
Regional Sales Director



Patrick Wiltse
Patrick Wiltse
Regional Sales Director



Jeff May
Jeff May
Regional Sales Director



Jörgen Rönnqvist
Jörgen Rönnqvist
Area Sales Manager Nordic and Baltic countries

Mattias Hedin
Mattias Hedin
Key Account Manager


Dine lokale forhandlere

Vis alle
Patrick Wiltse
Patrick Wiltse
Regional Sales Director



Patrick Wiltse
Patrick Wiltse
Regional Sales Director



Patrick Wiltse
Patrick Wiltse
Regional Sales Director



Jeff May
Jeff May
Regional Sales Director


Dine lokale forhandlere

Vis alle
Patrick Wiltse
Patrick Wiltse
Regional Sales Director



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


Jeff May
Jeff May
Regional Sales Director



Jeff May
Jeff May
Regional Sales Director


Dine lokale forhandlere

  • 1

    Africa Telco Business (PTY) Ltd

    Unit 7 Coram Office Park, Ferero Road, Randparkridge

    0027117924962

  • 2

    Aria Technologies Africa (PTY) Ltd

    24 Tsessebe Crescent
    Building 9, Corporate Park South
    Midrand, 1685, South Africa

    0027112030360

  • 3

    Electronic Communications Network (PTY) Ltd

    Unit 10, Growthpoint Business Park, Midrand, Gauteng

    002710590000

  • 4

    Trenic Industries (PTY) Ltd

    Unit C, Building 2, 5 Woodlands Drive Office park
    Woodmead 2191, South Africa

    0027114664278

Vis alle
Nipun Khanna
Nipun Khanna
Sales director for Southern Asia and ME



Jörgen Rönnqvist
Jörgen Rönnqvist
Area Sales Manager Nordic and Baltic countries

Mattias Hedin
Mattias Hedin
Key Account Manager



Jörgen Rönnqvist
Jörgen Rönnqvist
Area Sales Manager Nordic and Baltic countries

Mattias Hedin
Mattias Hedin
Key Account Manager


Dine lokale forhandlere

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


Simon Chin
Simon Chin
Regional Sales Director APAC



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


Jeff May
Jeff May
Regional Sales Director



Peter Gasparro
Peter Gasparro
Regional Sales Director

Patrick Wiltse
Patrick Wiltse
Regional Sales Director



Jeff May
Jeff May
Regional Sales Director



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


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


Jeff May
Jeff May
Regional Sales Director


Dine lokale forhandlere

Vis alle
Peter Gasparro
Peter Gasparro
Regional Sales Director

Patrick Wiltse
Patrick Wiltse
Regional Sales Director



Patrick Wiltse
Patrick Wiltse
Regional Sales Director



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


Patrick Wiltse
Patrick Wiltse
Regional Sales Director



Peter Gasparro
Peter Gasparro
Regional Sales Director

Patrick Wiltse
Patrick Wiltse
Regional Sales Director



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