1. NICAM and L-SECAM modulations

Since TDF has chosen NICAM as the standard for broadcasting digital sound associated with television, a digital carrier modulated in four phase states (PSK4) must be added to the L-SECAM multiplex. This carrier is located 5.85 MHz above the picture carrier and 650 kHz below the sound carrier. The level of the unmodulated AM sound carrier is 10 or 16 dB lower than that of the image.

1.1 NICAM data multiplex

The sound-data multiplex is organized in a 728-bit frame lasting 1 ms (728 kbit/s). It is composed of :

8-bit alignment word ;
5 bits of control information ;
11 additional data bits ;
704 parity or data audio...

You do not have access to this resource.

Exclusive to subscribers. 97% yet to be discovered!

You do not have access to this resource.
Click here to request your free trial access!

Already subscribed? Log in!

The Ultimate Scientific and Technical Reference

A Comprehensive Knowledge Base, with over 1,200 authors and 100 scientific advisors

+ More than 10,000 articles and 1,000 how-to sheets, over 800 new or updated articles every year

From design to prototyping, right through to industrialization, the reference for securing the development of your industrial projects

This article is included in

Signal processing and its applications

This offer includes:

Knowledge Base

Updated and enriched with articles validated by our scientific committees

Services

A set of exclusive tools to complement the resources

Practical Path

Operational and didactic, to guarantee the acquisition of transversal skills

Doc & Quiz

Interactive articles with quizzes, for constructive reading

Subscribe now!

Ongoing reading
NICAM and L-SECAM modulations

Previous
page NICAM service in L-SECAM

Optimizing a stereo audio service

Bibliography

In Engineering Techniques

MICHEL (J.) - Émetteurs TV terrestres. Amplification linéaire de puissance. - E 6 155 Traité Télécoms, (1995).
NAJMAN (M.) - Émetteurs DAB. - E 6 120, Traité Télécoms (1999).
...