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What is DAB?
Digital Audio Broadcasting (DAB) is a digital radio standard used for broadcasting audio content with improved sound quality, higher channel capacity, and better signal reliability compared to traditional analog FM/AM radio.
Definition
DAB is a digital transmission technology that compresses and broadcasts audio using digital signals, enabling multiple radio stations to be transmitted on a single frequency block.
Key Takeaways
- Offers clearer audio and reduced interference.
- Allows more stations per frequency compared to analog.
- Supports metadata such as track info, images, and traffic updates.
Understanding DAB
DAB was developed to modernize radio broadcasting by eliminating the limitations of analog technology. It uses digital compression and multiplexing, enabling multiple stations to share the same bandwidth.
Listeners receive DAB broadcasts through digital radios, car receivers, or mobile apps. Countries in Europe, Asia, and parts of Africa have adopted DAB or upgraded to DAB+.
DAB+(a newer version) uses more efficient AAC+ audio compression, offering better sound quality and lower bandwidth usage.
Importance in Business or Economics
- Expands broadcasting capacity for media companies.
- Reduces transmission costs.
- Supports new monetization formats like visual radio.
- Enhances public service broadcasting efficiency.
Types or Variations
- DAB – Original standard.
- DAB+ – Improved compression and sound quality.
- DMB (Digital Multimedia Broadcasting) – Supports audio + multimedia.
Related Terms
- FM Radio
- Digital Transmission
- Broadcast Spectrum
Sources and Further Reading
- WorldDAB Standards
- European Broadcasting Union (EBU) Reports
- ITU Digital Broadcasting Guidelines
Quick Reference
- Digital radio standard
- Better sound + more stations
- Uses shared multiplex frequencies
Frequently Asked Questions (FAQs)
Does DAB replace FM?
In some countries yes, though many use hybrid systems.
Is DAB better than FM?
Yes, it offers more stations and clearer audio.
Do I need a special radio for DAB?
Yes—digital receivers are required.
