Audio Quality
What to do if the VoIP audio is distorted, delayed or if you experience an acoustic echo?
spreed Web Meetings can be held at any location worldwide. In case the geographical distance between your participants is higher then approx. 8,000km or 5,000 miles you may experience an audio delay or latency. In case you experience a latency and the geographical distance of the meeting participants is significant less then 5,000 miles, the IT environment is likely the source of the audio latency. Latency problems are usually related to the following:- limited or varying Internet bandwidth
- slow firewall
- slow HTTP proxy servers or a combination of firewall and proxy servers
In case the connection check reports problems with the Internet connection please contact your system administrator or send the report of the spreed Connection Check to our technical support for assistance. As spreed fully complies with corporate security rules it does not attempt to overcome IT security firewalls rules or proxy servers.
spreed protects your corporate security
spreed complies with corporate security rules and in general does not attempt to overcome IT security firewalls or proxies like some other products do. Therefore, depending on the IT environment, this may cause spreed video and audio to be delayed. However, spreed can communicate faster by enabling the firewall on the TCP port 1935 (outgoing connection only).
What to do when when experiencing an acoustic echo?
An acoustic echo of you own voice may appear when your participant (the remote end) is not using a headset. The typical effect: the echo is loud and clear just like an audio message from the other speaker. When I'm alone in the conferencing room everything is fine but when the other speaker joins the meeting I get the echo. When this happens one can't do anything about it, it doesn't disappear. Usually the other speaker doesn't get the effect. Answer: an echo appears when the remote end (your participant) is using a loudspeaker and microphone without echo cancellation, e.g. the build in microphone and loudspeaker of a laptop. It is recommended to use a headset for audio or a webcam with an echo canceling audio driver such as a Logitech webcam. When using Windows with spreed, please make sure that the microphone input is not selected in the volume control (i.e. as output). This is often a default setting with Microsoft Windows. When running Windows, please check if the microphone input is mixed with the audio output (this a kind of "Karaoke" function). Enableing the microphone input as output may result in an acoustic feedback. For conference rooms a professional conference microphone such as the Yamaha PJP-25 is mandatory. Conference microphones for spreed are equipped with an USB interface for PC and/or Mac. We continuously test spreed web meetings with various webcams, headsets, and conference speakers. In particular we recommend webcams from Logitech, headsets from Plantronics and conference speakers from Yamaha.Webcams:
Logitech QuickCam® Vision Pro
Logitech QuickCam® Pro 9000
QuickCam® for Notebooks
The Logitech Vision Pro also has an echo canceling built-in conference microphone (USB). For improved stability under Windows with Logitech webcams please consider installing the webcam drivers only and not the optional webcam utility software.
Microphones and headsets:
When using headsets we can recommend headsets from Plantronics
Conference systems (microphones and loudspeakers)
For (real) meetings with multiple participants participating a meeting in the same room, a conference system/microphone with built-in loudspeaker is required. Yamaha Project Phones are the conference conference microphone speakers of choice for spreed Web meetings. We can highly recommend using Yamaha conference systems with spreed.
Yamaha PJP-25
Small and portable conference microphone speaker with 12 built-in array microphones for exceptional audio quality.
Yamaha PJP-100
Stationary and extendable conference microphone speaker. Supports dasy-chaining of multiple devices.
Yamaha CAM-1
Web conference camera with tracking feature and 180/270 degree fish eye lens. For more information about Yamaha Projectphones, please contact our sales teams on http://spreed.com/company/contact/
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