CBC Radio 2

The technical specifications defined in this document apply to all commercial content provided to the English and French radio networks of CBC/Radio‐Canada for broadcast. CBC/Radio‐Canada reserves the right to reject any audio content that fails to meet the standards described in this document.

Specifications

Versions

The commercials shall be delivered with a stereo or mono mix.

Support

Electronic file only.

Audio File Format

The preferred format is the uncompressed Linear PCM format (24bits/48kHz). If the producer is not capable of delivering this file format, a few other formats will be accepted:

Any other file formats shall be approved beforehand.

File Format COMPRESSION
RATE
(kbps/channel)		 RESOLUTION
(bits)		 SAMPLING
FREQUENCY
(kHz)
Linear PCM: .wav Uncompressed 24 58
Broadcast Wave MPEG1 Layer II .wav 192 kbps/channel 16 48
Linear PCM .wav Uncompressed 16 48, 44.1
MPEG1 Layer III .mp3 160‐320 kbps/channel 16 48, 44.1

Track Allocation

Track 1: Left Channel
Track 2: Right Channel

Audio Content Reference Level

‐20dBFS, corresponds to +4dBu. It shall be consistent with the recorded material.

Maximum True Peak

‐2dBTP (dB True Peak)

Allocated Bandwidth

20Hz‐20kHz

Mono Compatibility

Shall be guaranteed at all time.

Loudness Level
  • The commercial integrated loudness should not exceed ‐24LKFS +/‐1LU. The integrated loudness is measured on all channels for the complete commercial duration using a broadcast loudness meter having the ITU‐R BS.1770‐3 compliant algorithm.
  • CBC/R‐C reserves the right to adjust the average commercial loudness to normalize it with the average program loudness.

File Structure

The file structure shall be as follows:

For Radio 2 For Espace Musique
Duration Audio Duration Audio
‐‐‐‐ (no silence) 1⁄4 sec Silence
‐‐‐‐ Commercial ‐‐‐‐ Commercial
‐‐‐‐ (no silence) 1⁄4 sec Silence

Audio Subjective Quality

  • The audio content shall be of superior quality, free of all noise and interference.
  • The audio content shall have an acceptable dynamic range.
  • The tone shall be natural and pleasant. Dialogue must remain intelligible throughout the entire audio commercial.

File Quality

The file must not have any audio impairment such as digital errors, compression or encoding artifacts ,etc.

File Naming

The file name shall include the following information:


ORDERELEMENTDESCRIPTION

1st

Date

Expected first broadcast date (DDMM), approximately. In case this information is not available, write «XXXX».

2nd

Provider

Name of the company providing the audio content.

3nd

Advertiser

Name of the advertiser who appears in the commercial.

4nd

Description

Commercial title.

5nd

Duration

Commercial duration given in seconds, ex. : 15, 30, 60.

Notes:

  • The elements in the file name shall be separated by an underscore symbol « _ ».
  • The file name shall not contain any accent, special character or space.
  • The maximum length of the complete file name shall not exceed 80 characters.

Ex: 2406_XYZProductions_NearbyStore_WeeklySpecials_30.wav

Content Delivery

Content providers shall contact CBC/Radio‐Canada for information about the delivery methods.
Technical Acquisition
Standard For Radio
Commercials
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Contact Sheet
For Radio 2
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