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Status: Verified (1)

RFC 4352, "RTP Payload Format for the Extended Adaptive Multi-Rate Wideband (AMR-WB+) Audio Codec", January 2006

Source of RFC: avt (rai)

Errata ID: 114
Status: Verified
Type: Technical
Publication Format(s) : TEXT

Reported By: Alfred Hoenes
Date Reported: 2006-02-07

 

(1)

In Section 4.3.2.3 of RFC 4352, the first formula line on page 18,

      TS(i) = TS(i-1) + (DISi + 1) * frame duration,    2 < i < n

should say:

      TS(i) = TS(i-1) + (DISi + 1) * frame duration,    2 <= i <= n


(2)

The 'Example Algorithm' in Section 4.5.1, on page 27, in the second
half of Step 1, says:

   Return recovered timestamps as
   x(n) = t0 + n*L1 and associated ISF equal to isf0,
   for 0 < n < (t1 - t0)/L0
   goto End

This pseudocode fragment should say:

   for 0 < n < (t1 - t0)/L0
      Return recovered timestamps as
      x(n) = t0 + n*L0 and associated ISF equal to isf0
   goto End


(3)

In Section 7.2, on page 32, the second item of the unnumbered list
says:

   -  The media type (payload format name) is used in SDP "a=rtpmap" as
      the encoding name.  [...]

It should say:

   -  The media subtype (payload format name) is used in SDP "a=rtpmap"
      as the encoding name.  [...]


(4)

Within the second paragraph on page 33, Section 7.2.1 of RFC 4352
says:
                                            [...]  As any receiver will
      be capable of receiving stereo frame type and perform local mixing
      within the AMR-WB+ decoder, there is normally only one reason to
      restrict to mono only: to avoid spending bit-rate on data that are
      not utilized if the front-end is only capable of mono.

It should say:
                                            [...]  As any receiver will
      be capable of receiving stereo frame types and perform local
      mixing within the AMR-WB+ decoder, there is normally only one
      reason to restrict to mono only: to avoid spending bit-rate on
      data that are not utilized if the front-end is only capable of
      mono.

Notes:

from pending

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