NRSC Supplemental Information

This site contains information that broadcasters and manufacturers may find relevant to the NRSC-5 standard and that may supplement the information available from the NRSC. The following information specifies certain implementation parameters that have been included in iBiquity’s HD Radio system.

 

 

The Audio Program Type Indications transmitted in the HD Radio system and defined by the NRSC-5 IBOC standard are based on the definitions provided by the Radio Broadcast Data Service (RBDS) standard (NRSC-4). The first 32 program types mirror the existing RBDS definitions. Program types 32 – 256 are extensions that define additional music and program formats available to broadcasters.

 

The following table provides the most up to date information on program types available using the HD Radio system. A receiver would display text of the program type upon receiving the type number.

Document: SY_IDD_1017s  --  (Air IDD – Audio Transport)

Table: Table 5-9 --  Audio Program Type Indications

 

Assignment:

 

 

 

The Advanced Application Services Transport (AAT) requires transmission of a port identifier for different data services. The port identifier is designed to highlight the availability of specific data services and applications. Specific port assignments have been defined for services that are under development.

 

Document: SY_IDD_1019s -- (Air IDD – AAS Transport)

Table: Table 5-2 -- Port Number

 

Assignment:

 

 

 

The HD Radio system supports surround sound processing of the transmitted audio. As an advanced feature of the Station Information Service (SIS) beyond the NRSC-5A standard, the Service Information Message identifies the audio processing type.  The audio processing identification is decoded by the HD Radio decoder IC and available through the command protocol. Receiver manufacturers should reference the command interface documentation for more details about accessing this information.

Document: SY_IDD_1020s -- (Air IDD – Station Information Service Transport)

Table: Table 4-1 -- MSG ID Definitions

 

Assignment:

Also includes setting of Surround Sound format