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    Sound quality

Dr Sound explains double talk

Dear readers, Dr Sound is back with a new post about sound and sound technology. The subject this time is a really exciting and interesting one called double talk.

Double talk … or full duplex, is all about having the capability for several people being able to talk at the same time, without anyone being cut out. The simplest form of remote communication is what we call simplex. With simplex, one device transmits while the other receives, and only one device can transmit at a time.

Full Duplex means that people can talk at the same time without anyone being cut out.

This is how a traditional communication radio work, with a button you push when you talk. We've all seen movie heroes, with their helmets askew, shouting into a communication radio things like: "We need support, over! We'll cover you! Over and out!"

Simplex, only one device can transmit while the other receives Like a traditional communication radio.

The intermediate step is half duplex. It's like simplex but is automatically controlled, with the direction of communication being determined by who speaks the loudest. Before the digital era, and consequently before echo cancellation, full duplex was impossible for a speaker phone simply because it would have caused feedback. The incoming “speaker sound”, along with the effects of the room, could not be eliminated before the microphone transmitted.
This is why full duplex is the aim for all telecommunication and also during teleconferences. Long distance conversations with full duplex, are now possible thanks to good digital technology and echo cancelling. A fact that has given us the capability to interrupt one another…

Conversations at distance with full duplex, are now possible thanks to good digital technology and echo cancelling.

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

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Jörgen Rönnqvist
Jörgen Rönnqvist
Area Sales Manager Nordic and Baltic countries

Mattias Hedin
Mattias Hedin
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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
Regional Sales Manager - India & Middle East



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


Votre revendeur local

Afficher tout
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

Mattias Hedin
Mattias Hedin
Key Account Manager


Votre revendeur local

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


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
Lothar Schumann
Lothar Schumann
Channel Sales Germany
+49 (0)336 386 0597


Votre revendeur local

Afficher tout
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
Regional Sales Manager - India & Middle East



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



Votre revendeur local

Afficher tout
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


Votre revendeur local

Afficher tout
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


Votre revendeur local

Afficher tout
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


Votre revendeur local

Afficher tout
Nipun Khanna
Nipun Khanna
Regional Sales Manager - India & Middle East



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


Votre revendeur local

Afficher tout
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




Votre revendeur local

Afficher tout
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


Votre revendeur local

Afficher tout
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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