Measurement
Part of Podcast media reporting
Comparing podcast results with other audio formats
Compare podcast results with streaming audio and broadcast radio while keeping delivery methods, audience estimates and response limits clear.
Compare podcast, streaming audio and broadcast radio according to the decision the campaign report needs to support. Label each format's measurement method before comparing figures. A podcast ad-delivery count, a streaming player's ad event and a radio audience estimate are not interchangeable impressions.
Choose the comparison question
Decide whether the review concerns delivery against the buy, Australian audience coverage, recorded response or evidence of an effect. Align the market and period where possible. If the formats had different jobs, state those objectives before comparing results.
For delivery, show what each order promised and the evidence used to check it. A podcast order may name an episode, a streaming order may commit to an ad event, and a broadcast radio order may specify spots by station and daypart. These are examples of possible terms; use each actual contract.
| Format | Evidence that may be available | Limit when comparing |
|---|---|---|
| Downloaded or progressively downloaded podcast | Valid episode downloads or ad-delivered counts under a stated method | Server delivery does not confirm playback. |
| Streaming audio, including radio streams | Seller-defined ad events or player signals | Establish whether the reported event meets a stated client-side or audible-impression definition. |
| Broadcast radio | Spot logs and audience estimates for the relevant market and period | An audience estimate does not count people who heard a particular spot. |
For podcast figures, record whether the count relates to a download and the ads included in it. For streaming audio, record the ad event being counted; for radio, identify the audience estimate, market and survey period. Keep these measure types separate unless the report shows they represent comparable events.
For downloaded podcast measurement, name the IAB Tech Lab Podcast Technical Measurement Guidelines, version 2.3. They address downloads, audience and ad delivery using server logs, including the ads in downloaded media; compliance details are separate.
For streaming audio, name the seller's ad event and cite its metric documentation. The Media Rating Council's Digital Audio Measurement Standards, final version 1.0, is a named digital-audio reference; if a report claims a client-side or audible-impression definition, retain the exact definition and evidence rather than inferring it from a player signal.
A seller's label alone does not explain how a reported metric was measured.
Commercial Radio & Audio's Metro Ratings page provides a Survey Dashboard, 2026 Survey Calendar and 2026 GfK Survey Results labelled by survey. Use the survey label and period shown there, alongside the market and metric, so the radio estimate can be checked.
GfK provides radio audience measurement across Sydney, Melbourne, Brisbane, Adelaide and Perth. Radio 360° combines 50,000 surveys per year, streaming-listening data from radio station websites, listening apps and server logs, and a 2,000-person panel wearing the GfK MediaWatch.
Radio 360° combines surveys, streaming data and a wearable panel across five metropolitan markets. Those figures describe radio listening under that system; they do not verify delivery of a particular advertiser's spot or provide national coverage. Check the market, survey period and metric before placing a radio estimate beside a podcast result.
A worked comparison keeps each campaign result on its own measurement line: label the podcast count with its IAB Tech Lab method, the streaming result with the seller's documented ad event, and the broadcast result with its GfK Radio 360° survey label, period and market. Compare the reported figures only after these labels make clear what each one counts.
If the report does not give the streaming event definition or the radio survey label, period or market, mark that information as unavailable. Do not replace missing campaign evidence with a general listening figure.
Comparing podcast, streaming audio and broadcast radio measurement methods
- PodcastEpisode downloads or ad-delivered counts using IAB Tech Lab Podcast Technical Measurement Guidelines v2.3
- Streaming audioSeller-defined ad events with documented client-side or audible-impression definitions (per Media Rating Council Digital Audio Measurement Standards v1.0)
- Broadcast radioGfK Radio 360° audience estimates by market (Sydney, Melbourne, Brisbane, Adelaide, Perth) and survey period
Key measurement sources for Australian audio formats
- Podcast standard
- IAB Tech Lab PTM Guidelines v2.3
- Streaming audio standard
- Media Rating Council Digital Audio Measurement Standards v1.0
- Radio audience source
- Commercial Radio & Audio Metro Ratings (GfK Radio 360°)
Compare recorded outcomes with their routes visible
Show enquiries, accepted-code orders or other business outcomes using the same outcome definition and a suitable observation window. Note differences in creative, offer and destination. A shared podcast code, a clicked streaming link and a later brand search can enter different records. Those differences affect what is observable.
A cost-per-delivery calculation is comparable only when the denominators represent sufficiently similar events and the costs use the same Australian dollar and GST basis. Otherwise, report each cost and delivery measure separately. Do not rank attention or effectiveness from unlike counts.
Conclude which format met its own booking, which produced observable response under the stated rules and where coverage or method prevents a direct verdict. A decision about incremental effect requires a suitable study, not a comparison of unlike delivery totals.
