Difference between revisions of "Low Latency audio"
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| − | + | '''Latency''' refers to the delay between when an audio signal enters a system and when it emerges. Excessive audio latency has the potential to degrade call quality. | |
| − | + | Typical scenarios where high latency might become an issue is: | |
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| − | Typical scenarios where latency might become an issue is: | ||
* PA-Announcement where the operator hear his own announcement from nearby VoIP devices (e.g. IP Speakers or Intercoms) | * PA-Announcement where the operator hear his own announcement from nearby VoIP devices (e.g. IP Speakers or Intercoms) | ||
* Systems with a mix of analogue and digital audio paths. Audio from the operator is distributed partly to main PA speakers through the analogue path, and partly to speakers via a digital (VoIP) path. The analogue path will have close to zero delay, while the digital path will have some delay. Too much delay it will resulting in an echo during announcements. | * Systems with a mix of analogue and digital audio paths. Audio from the operator is distributed partly to main PA speakers through the analogue path, and partly to speakers via a digital (VoIP) path. The analogue path will have close to zero delay, while the digital path will have some delay. Too much delay it will resulting in an echo during announcements. | ||
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| + | A latency of 150 ms is barely perceptible and thus acceptable. However, anything over that, the quality and consistency of the call starts to decline. Latency is unacceptable at 300 ms or greater. | ||
Revision as of 12:18, 26 May 2023
Latency refers to the delay between when an audio signal enters a system and when it emerges. Excessive audio latency has the potential to degrade call quality.
Typical scenarios where high latency might become an issue is:
- PA-Announcement where the operator hear his own announcement from nearby VoIP devices (e.g. IP Speakers or Intercoms)
- Systems with a mix of analogue and digital audio paths. Audio from the operator is distributed partly to main PA speakers through the analogue path, and partly to speakers via a digital (VoIP) path. The analogue path will have close to zero delay, while the digital path will have some delay. Too much delay it will resulting in an echo during announcements.
A latency of 150 ms is barely perceptible and thus acceptable. However, anything over that, the quality and consistency of the call starts to decline. Latency is unacceptable at 300 ms or greater.