TL;DR — Quick takeaways
A tight radio commercial script works like a map, every second must pull its weight. For 15 seconds, deliver one strong hook and a single offer. For 30 seconds, add a clear benefit and a direct call to action. For 60 seconds, tell a short story, add proof or detail, then close with the offer and tag.
Who should use each length: 15 seconds suits promos, retargeting, and streaming bumps. 30 seconds fits local businesses and product launches that need a crisp pitch. 60 seconds is for brand storytelling, complex offers, and fundraising that needs context.
Fastest path to test and localize: write one master script, then audition voice variations with TTS or short voice-clone samples. Export aligned captions (SRT) for streaming, run small A/B tests with distinct landing pages or promo codes, and iterate on the winning voice and timing.
Templates, annotated examples, and workflow maps follow to help you produce and scale variants quickly.
Why radio still works (and how it’s changed)
Radio still delivers reach and trust in noisy media markets. A tight radio commercial script cuts through quickly, builds memory, and sounds local. This section shows where radio outperforms other formats, how podcast and streaming audio change creative needs, and when to choose one over the other.
Where radio outperforms other channels
The Record: Q1 U.S. audio listening trends (2026) reports: In Q1 2026, AM/FM radio and podcasts accounted for 82% of all daily ad-supported audio time in the U.S. That mix matters. Traditional radio still wins on broad, habitual reach during drive times. It also builds brand familiarity through frequency and local presence. Use radio when you need mass reach, local targeting, or consistent daily frequency.
Key advantages
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Mass reach: large, regular audiences across demos.
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Local affinity: listeners trust local DJs and stations.
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Simplicity: short spots work well and scale affordably.
How streaming and podcasts change creative needs
Streaming audio and podcasts shift focus from pure reach to precision. Programmatic insertion lets you swap offers by listener, so messages must be modular. Podcasts favor host-read, narrative style and longer copy that feels native. For streaming ads, produce variants: shorter hooks, personalized CTAs, and clean midrolls that match episode tone.
Creative adjustments to make
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Write modular scripts with swappable lines.
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Prioritize natural pacing and conversational reads.
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Prepare localized versions for key markets and languages.
When to pick radio versus OTT and podcasts
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Choose radio for broad local awareness, store traffic, and time-sensitive promos.
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Pick streaming or podcast buys for precise targeting, audience affinity, and storytelling.
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Combine both when you want mass reach plus targeted follow-up.
Match the channel to the goal, then tailor voice, length, and localization accordingly. Using localized voices and modular scripts makes both channels work together smoothly.
Radio commercial script basics: formats, timing, and formatting
A good radio commercial script feels simple and precise. It tells the story fast, hits the offer, and ends with a clear call to action. This section walks through standard 15, 30, and 60 second structures, practical timing rules, and a clean script format producers and voice actors can use. It also shows how to mark pauses, sound effects, and voice lines so recordings are smooth.
Spot lengths: what fits where
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15 seconds: quick and sharp. Open with a one-line hook in the first 2 to 3 seconds. Use 6 to 8 seconds for the offer or benefit, and finish with a short CTA of 3 to 4 seconds. Keep language direct and active.
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30 seconds: the most flexible option. Start with a 3 to 5 second attention grabber. Use 12 to 16 seconds for the body, showing the offer and proof. Reserve 6 to 8 seconds for the CTA and legal tag (if any). Add a brief sound bridge if it improves clarity.
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60 seconds: tell a mini-story. Give 5 to 8 seconds to set the scene. Spend 30 to 40 seconds on details and reasons to act. Close with a 10 to 12 second CTA, repeat the brand name, and add any required disclaimers.
Timing, pacing, and read speed
Read at a natural, conversational pace. Aim for about 2 to 3 words per second for clear delivery. Use slightly faster reads for promos and slightly slower reads for emotional lines. Counted pauses help: mark short pauses as [beat] and timed pauses like [pause 1.5s].
Practical timing rules:
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Read a line aloud while timing it, then cut words if it runs long.
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Use shorter sentences for radio clarity and listener retention.
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Leave 0.5 to 1 second of silence after the CTA to let the message settle.
Formatting a clean script for actors and producers
Use a consistent, label-first format so roles are clear. A simple template looks like this:
SFX: (brief description) VO (Voice Over): This is the line the actor reads. ALT VO: (alternate wording) PAUSE: [pause 0.8s] TAG: Brand tagline or jingle cue
Mark emphasis with ALL CAPS for stressed words only. Put timing notes in brackets. For sound effects, give a short cue and duration, for example: SFX: CAR DOOR SLAM (0.4s).
Quick production tips
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Number each script line for easy reference in sessions.
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Provide the estimated read time next to long paragraphs.
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Supply a phonetic guide for tricky names or URLs.
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Include a one-line director note at the top with tone and pace.
Use this structure to cut studio time and reduce re-takes. Clean scripts make casting, directing, and post work faster.
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Voice, tone, and casting: choosing the right voice for your message
Choosing the right voice makes a radio commercial script land with the intended audience. Start by defining the persona: age, gender, accent, and energy level. Match those traits to your campaign goals and audience segments, then build clear direction notes for whoever records the spot.
Define persona attributes and match to audience
Pick persona attributes that reflect your target listener. Age narrows vocal timbre, gender helps set expectations, accent signals geography or culture, and energy sets pacing. Use these quick checks to pick a voice:
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Brand fit: Does this voice match the brand personality, friendly or authoritative?
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Channel fit: Is the spot for drive-time radio, streaming, or a podcast ad?
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Audience fit: Does the voice mirror the listener in age, region, or lifestyle?
Keeping these aligned makes the message feel native and trusted.
Write direction notes and a tight voiceover brief
A good brief saves studio time and gives consistent reads. Include these elements in every brief:
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One-line role: who is speaking and why.
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Desired tone: two adjectives, for example warm and brisk.
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Pacing and pauses: mark beats after hooks or before the CTA.
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Pronunciations and local terms: list brand names, places, and tricky words.
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Deliverables and file specs: format, length, and stem tracks if needed.
Also add a short sample read (two lines) to set the reference. If you work with multiple actors, attach A/B reads so producers can compare.
Practical tips for AI voice matching and cloning
AI tools let you scale that same persona across languages and channels. Use voice cloning to create a consistent brand voice, then tune energy and speed per market. When using TTS or cloned voices, test for natural phrasing and local idioms. Export aligned subtitles or SRT files for streaming spots that need captions.
Map voice elements to tech choices: choose TTS for quick iterations, pick voice cloning for multi-spot consistency, and use transcription to verify reads against script. Keep a short style guide with clip examples and target settings, so every engineer or localization partner reproduces the same sound.
Use a simple approval workflow: script, reference read, test localization, final mix. That keeps casting decisions repeatable and measurable.
Industry-specific script templates and annotated examples
This section gives ready-to-use templates and full sample scripts you can adapt for hospitality, retail, automotive, and nonprofit spots. Each example shows how to craft the hook, state the offer, add social proof, and close with a clear CTA. Use these to speed drafting, and pair each element with DupDub features like TTS, voice cloning, and localization when you produce and test variations.
Hospitality / Resort: 30-second sample
Script Host: "Sunrise Cove Resort, where mornings melt into ocean views. Book three nights, get the fourth free. Mention MORNING30 to save. Families love our kids club and private beach. Call or visit SunriseCove.com, book today."
Annotations
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Hook: Immediate imagery, two short phrases to paint the scene.
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Offer: Clear stay incentive, promo code for tracking.
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Social proof: Short testimony idea, "Families love our kids club." Use actual brief reviews when available to comply with truth-in-ad advertising.
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CTA: Website plus promo code, easy to say and remember.
Voice choices and localization notes
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Voice: Warm, mid-40s female or neutral mid-30s male with calm pacing.
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Accent: Use local accent for regional radio, or neutral national accent for syndicated spots.
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DupDub tips: Use TTS for rapid A/B voice tests, clone a brand spokesperson for consistent reads, and export SRT if you add subtitled social clips.
Retail / Flash Sale: 15-second punch
Script Announcer: "Flash sale at Ridgeway Outfitters, today only. 50 percent off boots and outerwear. First 100 customers get a free tote. Rush in, Ridgeway on Main Street or shop RidgewaySale.com."
Annotations
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Hook: Urgency and the word today create immediate action.
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Offer: Short, numeric discount works best.
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Social proof: Use scarcity instead, for a faster spot.
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CTA: Street location and website for omnichannel conversions.
Voice choices and localization notes
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Voice: Energetic, younger male or female, faster tempo.
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Localization: Swap store name and city for each market; use localized promo codes.
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DupDub tips: Generate market-specific voice variants using cloning, and batch localizations with multi-language TTS for diverse demographics.
Automotive / Service: 30-second trust builder
Script Technician: "At Harbor Auto, our certified techs fix brakes fast. Free multi-point check with any service this month. Over 20 years serving Cape City. Drive safe, call Harbor Auto at 555-0199 or book online."
Annotations
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Hook: Safety-focused lead, relevant to car owners.
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Offer: Free add-on service increases perceived value.
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Social proof: Credibility from years in market, can include ratings.
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CTA: Phone plus online booking, two contact paths.
Voice choices and localization notes
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Voice: Authoritative, mid-40s male, steady pace.
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Localization: Mention local landmarks or years in market to boost trust.
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DupDub tips: Use voice cloning for the owner voice, and TTS for quick localized read variations.
Nonprofit / PSA: 30-second empathy spot
Script Narrator: "When cold nights arrive, ShelterLight opens its doors. Your gift warms a family. Text WARM to 70707 to give now. Join neighbors helping neighbors."
Annotations
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Hook: Emotion first, brief scene.
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Offer: Clear action, simple text-to-donate keyword.
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Social proof: Peer framing, "neighbors helping neighbors."
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CTA: Text shortcode for low friction donations.
Voice choices and localization notes
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Voice: Calm, compassionate female or male, slower cadence.
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Localization: Use local charity names and shortcodes where permitted. Verify legal requirements for fund-raising disclosures.
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DupDub tips: Use TTS for multilingual PSAs, and voice cloning for consistent campaign tones across languages.
Quick mapping: script element to DupDub feature
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Hook: TTS and voice cloning to test multiple tones quickly.
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Offer: Use variants in cloned voices and export audio files for split tests.
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Social proof: Transcribe real testimonials with STT, then clean and synthesize with TTS.
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CTA: Localize CTAs and phone numbers with DupDub localization, and export SRT for captioned social cuts.
These templates are plug and play. Swap names, times, and legal lines for your market. Test two voices, and localize promo codes so you can track which ad and which voice drive signups.
Adapting scripts for traditional radio vs streaming & programmatic audio
Preparing a radio commercial script for both AM/FM broadcast and streaming needs a small technical and creative shift. Broadcast buyers expect mixes that translate over FM transmitters, while programmatic spots must survive codec compression and dynamic insertion. This section shows the key delivery rules and quick script edits to make one script work in both places.
Tune the technical mix first
Broadcast and streaming use different loudness workflows, so set your final mix with the right targets. Broadcast and streaming platforms measure loudness using standards such as ITU-R BS.1770-5 (2023), which specifies algorithms to measure audio programme loudness and true-peak audio level. For AM/FM, aim for conservative true-peak limits to avoid transmitter distortion (true-peak measures short-term clipping). For streaming, keep headroom for codec compression and normalize to platform targets.
Quick delivery checklist:
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Loudness target: match broadcaster spec or platform LUFS range.
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True-peak: keep under the station or platform limit (avoid clipping).
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File format: high-bitrate WAV for broadcast, MP3/AAC for programmatic if requested.
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Metadata: include ad ID, campaign tags, and companion banner tags for programmatic buys.
Make the script work creatively in both lanes
Write short, punchy fronts for live reads and long-form variants for streaming. Programmatic ads often use dynamic ad insertion, so add conditional cues (spoken or silent) where personalization can slot in. Use parenthetical copy notes for announcers, like (pause for dynamic city name) or (drop music under CTA). Keep CTAs tight: a spoken short code or URL plus an audio-only friendly instruction.
Simple edits to adapt one script:
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Trim the opening hook by 1 to 2 seconds for live read slots.
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Add an optional personalized line flagged with [DNI] for dynamic insertion.
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Provide a station mix and a streaming mix, label both in the deliverables.
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Supply a clean voice track (no music) for programmatic stitching.
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Include companion banner copy and image tags in the ad metadata.
Test both mixes on real devices and in low-bandwidth streams. That final QA step catches codec issues and timing slips before delivery.
Measuring ROI and attribution for radio campaigns
Measuring the return on radio starts with clear goals and simple tests. This section shows which KPIs to track and how to attribute results to a radio commercial script or specific spot. You’ll get practical methods: A/B tests, holdouts, UTM-tagging, call tracking, partner reporting, and quick experiments that prove creative lift. Use these steps to move from guesswork to repeatable outcomes.
Pick KPIs that map to business outcomes
Start with a short list of primary metrics, then add secondary signals. Keep the list to three or four KPIs so analysis stays clean.
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Calls: Track inbound calls with session- or spot-specific phone numbers. Call duration and IVR paths add quality signals.
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Site visits: Use UTM-tagged landing pages to separate radio traffic from other channels.
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Promo codes: Give each station, daypart, or creative its own code to tie sales directly to spots.
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Foot traffic: Measure store visits with POS attribution, loyalty check-ins, or beacon/mobile panels.
Attribution methods that actually work
Combine direct and statistical methods for best accuracy. For direct links use UTM tags and unique promo codes, and for channel lift use holdouts and creative A/B tests.
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UTM-tagging: Create unique UTMs per creative, station, or flight. Route these to a dedicated landing page that records conversions.
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Promo codes and vanity URLs: Use short spoken codes and track redemptions in your CRM.
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Call tracking: Provision dynamic numbers that rotate by ad or region, then feed call records into your analytics.
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Holdouts and geo tests: Hold some markets back from radio, then compare lift across matched areas.
Radio often delivers strong returns: according to Radio’s Returns Have Advertisers Across Categories Tuning In (2015), every dollar spent in radio advertising could generate up to $17 of revenue for listeners exposed to ads.
Run a simple creative lift test (5 steps)
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Define the outcome, for example phone leads or checkout conversions. 2. Pick two creatives and one control market. 3. Send creative A to market A, creative B to market B, and keep market C as a holdout. 4. Run for a fixed period, then compare lift per market using per-impression or GRP-adjusted rates. 5. Confirm with call recordings, form timestamps, or promo code redemptions.
Integrations to consider: connect call-tracking providers to your analytics, import partner reach reports for GRPs, and push promo redemptions to your CRM. Use fast iteration tools, like TTS or quick voice clones, to produce and test variants without long studio bookings. These steps make it easy to show creative lift and scale winning spots.
How to produce and localize radio scripts with DupDub (workflow mapping)
Start with a clear brief and a finished radio commercial script. This guide maps each production task to DupDub features like TTS, voice cloning, transcription, and SRT export. You'll get a sample single-market and multilingual workflow, recommended export settings, and a short testing timeline.
Map tasks to DupDub features
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Script drafting and polishing: Use DupDub's AI Writing assistant to draft and tighten copy. Export the final script as plain text or a timestamped transcript.
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Casting and voice selection: Use TTS for category voices, or create a voice clone (30 second sample) to match a brand voice. Test age, accent, and speaking style in the studio UI.
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Record review and notes: Upload or record a read in DupDub, then use Speech-to-Text (STT) to generate editable transcripts for line-level edits.
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Localization and translation: Auto-translate the script and generate aligned subtitles or SRT files to match timing.
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Final audio render: Export MP3 or WAV from the project, with optional AI sound effects and normalization.
End-to-end sample workflows
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Single-market 30 second ad
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Write and lock the script in your doc.
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Pick a DupDub TTS voice and test two tones.
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Generate a draft MP3 and run quick STT to confirm timing.
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Apply SFX and export WAV for delivery.
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Multilingual 30 second campaign
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Source the English master script.
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Use DupDub AI translate to produce local scripts.
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For brand consistency, clone a principal voice and synthesize each language.
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Generate aligned SRT files for review and QA.
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Export MP3s or WAVs per market and bundle SRT files.
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Recommended settings and asset exports
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File type: WAV 48kHz, 24-bit for delivery to stations. Use MP3 192–320 kbps for streaming and ads platforms.
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Voice quality: Use Ultra voices for high-fidelity ads, Standard for drafts.
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Localization: Enable subtitle alignment and export SRT for captioned platforms.
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Transcription: Set STT confidence threshold to 0.8 for cleaner edits.
Privacy, compliance, and approvals
When you clone a voice, follow local rules for biometric data. According to Answer given by Mr Reynders on behalf of the European Commission (2022), The General Data Protection Regulation (GDPR) prohibits the processing of biometric data for the purpose of uniquely identifying a natural person, except under specific conditions. Keep recorded consent and limit access to voice samples during review.
Simple timeline for iterative testing and approvals
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Day 0: Brief and script lock.
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Day 1 to 2: Voice tests and draft TTS outputs.
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Day 3: Internal review with STT transcripts.
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Day 4: Localization pass and SRT export.
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Day 5: Final renders and delivery.
Checklist: dos, don’t, legal notes, and technical deliverables
Start with a short checklist to avoid rework and legal risk. This section gives focused pre-production, script QA, and final-deliverable checks for a radio commercial script. Use these items as a shared brief for copy, voice talent, engineers, and localization teams.
Pre-production checklist
Plan before you record. Confirm target markets, runtime, and primary call to action. Lock the script and mark timings in seconds. Choose voice types and alternates, noting age, gender, and accent. Reserve or license music and sound effects early.
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Confirm objective and KPI for the spot.
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Select running time (15, 30, 60 seconds) and timestamp beats.
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Tag lines, legal copy, and required disclosures.
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Cast voice options and back-up takes.
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License music and SFX, or prepare production stems.
Script QA and recording checks
Proof voice cues, breaths, and emphasis. Run a cold read to check pacing. Validate that on-air legal copy is readable and fits timing. Check localization notes for translated scripts and timing shifts.
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Read with stopwatch to confirm final runtime.
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Mark pauses, breaths, and overlaps for engineers.
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Flag any brand or product claims that need proof.
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Produce reference MP3s for localization teams.
Legal notes
Obtain written consent for cloned voices and re-use. Keep voice-clone releases and identity proof. Confirm music licenses cover broadcast and streaming. Respect privacy for any recorded personal data.
Technical deliverables for engineers
Provide WAV (48 kHz, 24-bit) masters and MP3 stems. Include SRT for captions where needed. State loudness: -16 LUFS ITU-R BS.1770 for streaming, -23 LUFS for broadcast. Add metadata: spot ID, client, air dates, version, and ISRC if applicable.
FAQ — common questions about radio commercial scripts and AI voices
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Are AI voices allowed on broadcast radio and terrestrial stations? (AI voices allowed on broadcast radio)
Most stations accept synthetic voices, but rules vary. For a radio commercial script, check your broadcaster, network contracts, and union rules. If an endorsement or talent likeness is involved, disclose as required. See the legal notes in the checklist section.
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How do I format a 30-second radio script for production? (format a 30-second radio script)
Use a two-column layout in prep, or a single-column readable copy: time stamps, VO lines, SFX cues. Keep copy tight: 6 to 8 lines, 55 to 70 words. Refer to the timing and formatting section for templates and exact timings.
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Should I choose live VO or TTS for my campaign? (choosing between live VO and TTS)
Pick live VO for high emotion and subtlety. Use TTS to scale, localize, and A/B test quickly. Consider hybrid: live for brand hooks, TTS for localized CTAs. See voice, tone, and casting for guidance.
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What are DupDub voice cloning limits and privacy controls? (DupDub voice-cloning limits)
DupDub clones from short samples and supports 47 languages. Clones are locked to the original speaker and processed with encryption. Check the product workflow mapping for quota and plan options.
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How long does production and localization typically take? (expected production timelines)
Simple 30-second edits can be done in a day. Full localization across multiple languages takes days to a week depending on revisions and approvals. Use the DupDub workflow chapter to speed up iterations.
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Do I need to disclose AI voices in ads and endorsements? (disclose AI voices in ads)
Disclosure rules depend on jurisdiction and platform policies. When a material connection or likeness is present, add a clear note. See legal notes and the checklist for sample copy and compliance tips.
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