Acoustic EQ curves for G.711/G.722 VoIP codecs, menu prompt psychology, and message-on-hold copywriting that turns wait time into B2B pipeline.
| Telephony Audio Element | Standard Studio Audio | VoIP / PBX Optimized Audio (G.711 / G.722) | Why It Matters on Mobile |
|---|---|---|---|
| Frequency Bandwidth | 20 Hz – 20,000 Hz | Band-passed 250 Hz – 3,400 Hz (or 7 kHz HD) | Prevents muddy bass distortion on phone speakers |
| Music Bed Ducking Ratio | -8 dB under voice | -16 dB under voice during speech | Stops cell network noise-canceling from muting the voice |
| File Format & Sample Rate | 48 kHz 24-bit Stereo WAV | 8 kHz 8-bit u-Law Mono / 16-bit 44.1 kHz Mono | Direct compatibility with RingCentral, Cisco & 3CX |
Modern iOS and Android cellular codecs actively suppress steady background signals they interpret as environmental noise. If an on-hold music bed is mixed too loud behind the voice actor, the caller's phone codec pumps and garbles the spoken words.
Our telephony mastering chain ducks music beds by -16dB during speech and carves a 1.2kHz–2.8kHz pocket around the human vocal formant.
Allowing for 6-second musical breathers between 4 distinct informational segments, a 3-minute on-hold production typically uses 240 to 280 words of script.
Crystal-clear corporate telephony voiceover formatted directly for RingCentral, Cisco, 3CX, Genesys, and Asterisk PBX systems.
Best For: Corporate auto-attendant trees, medical clinic IVR menus, after-hours voicemails, and promotional on-hold message loops with licensed music.
Studio Turnaround: 24 Hours
Acoustic Verification: Engineered specifically for narrowband and wideband VoIP codecs (G.711 / G.722) so consonants ('s', 'f', 't') remain 100% intelligible on mobile speakerphones.
Former biomedical researcher delivering flawless pharmaceutical, HIPAA, OSHA, and enterprise SaaS LMS training narration synced to Articulate Storyline.
Best For: Articulate Storyline 360 / Adobe Captivate courses, medical device animations, pharmacological MOA videos, and enterprise cybersecurity training.
Studio Turnaround: 24–48 Hours
Acoustic Verification: Zero pronunciation errors across complex clinical and pharmacological terminology; delivers 50+ split LMS slide files named exactly to your storyboard schema.
How instructional designers automate batch audio file splitting, loudness consistency, and closed caption synchronization across 100+ slide courses.
How specialized medical narrators handle Mechanism of Action (MOA) 3D animations, FDA Important Safety Information (ISI) pacing, and clinical trial modules.