AudioHub Release Notes

The following sections list every released version of AudioHub, newest first. Each section comes from the monthly OCP® Release Notes page named in its Released line.

AudioHub v7.7.1

Released: July 2025

• Skip Prompt Parts Where the Text is Null

• Mitigate CVE-2025-6020, CVE-2025-4802

AudioHub 7.5.0

Released: November 2026

Improvements

• QoS: During a speech-synthesis outage, calls now switch straight to the backup voice instead of waiting before every prompt. The standard voice is restored automatically once the service recovers.

Security

• General security vulnerability fixes.

AudioHub 7.4.3

Released: October 2026

Fixes

• Stability improvements to the upgrade process. No changes to features, APIs or caller experience.

AudioHub 7.4.2

Released: October 2026

Fixes

• Reliable Audio Playback During High Call Volume — Fixed an issue where callers occasionally heard truncated or distorted audio when multiple requests for the same prompt arrived at the same time. Audio prompts now play in full and without corruption, even during heavy call volume.

AudioHub 7.4.1

Released: October 2026

• Expanded language and locale coverage for Omilia Lyra voices.

• Introduced support for the new TTS model layer, in line with the introduction of new TTS voice tiers. The Omilia Lexis voice family comes as the Default tier in its supported locales, as an OCP included feature.

• QoS: Introduced additional service outage contingencies, to protect from caller experience disruptions.

• General security vulnerability fixes.

AudioHub 7.4.0

Released: September 2026

• Expanded language and locale coverage for Omilia Lyra voices

• Introduced support for the new TTS model layer, in line with introduction of new TTS voice tiers. The Omilia Lexis voice family comes as the Default tier in its supported locales, as an OCP included feature.

• QoS: Introduced additional service outage contingencies, to protect from caller experience disruptions.

AudioHub 7.3.2

Released: August 2026

Fixes

• Correct Voice Used for Newest Omilia Voices - Requests for a specific voice from Omilia's newest voice family are now honoured. Previously, these requests were silently served with the deployment's default voice, so applications configured for one voice could be heard speaking in a different voice. Voice selection now behaves consistently across all supported voices.

• Uninterrupted Streaming After Quiet Periods - OCP Conversational Text-to-Speech® streaming no longer fails on the first request following a period of low traffic. The connection to the speech engine is kept warm, and a request that fails before any audio has been played is automatically retried, so callers hear the full prompt instead of an error.

AudioHub 7.3.1

Released: July 2026

Fixes

• Reliable Streaming Speech Synthesis for Longer Prompts - OCP Conversational Text-to-Speech® streaming now completes longer spoken responses without timing out partway through. The streaming timeout is independently tunable, so longer prompts play back in full and consistently.

• Accurate Accents for Non-English Voice Synthesis - Non-English voices, including Portuguese, Spanish, French, and German, now speak with the correct regional accent instead of defaulting to an English accent. Multilingual conversations sound more natural and easier to understand.

AudioHub 7.3.0

Released: July 2026

New Features

• Speaking Rate and Volume Control for Google Chirp 3 HD Voices - You can now control speaking rate and volume when synthesizing speech with Google Chirp 3 HD voices.

Improvements

• Expanded Language Support - AudioHub now supports an extended set of languages and locales, including Norwegian, Swedish, Japanese, Mandarin Chinese, Cantonese, Filipino, Malay, Thai, Indonesian, Hindi, and a range of regional Spanish, German, English, Dutch, Hebrew, Danish, and French variants. This broadens the reach of voice applications to more global audiences.

AudioHub 7.2.1

Released: July 2026

Fixes

• Prevented Critical Errors - Improved audio retrieval API response time and reliability by eliminating an unnecessary database query.

AudioHub 7.2.0

Released: May 2026

Added

• Support for audio streaming.

Fixed

• Allow namespace prefixes in SSML parser