AI-based voice enhancement will be among a series of innovations making their IBC 2025 debut on the DHD stand at the RAI Amsterdam Convention Centre, 12-15 September. Developed in cooperation with ai|acoustics, the technology allows the removal of noise and distortion in live broadcast voice presentations.
“We are offering this feature as an integral element of our XD3 IP core processor for use with any audio mixing desk in our product range,” comments Christoph Gottert, DHD international sales manager. “Potential applications include enhancing the audibility of a commentator in a noisy sports stadium or a reporter presenting a live bulletin against a background of city-centre motor traffic. It is a great application of machine learning technology combined with ai|acoustics’ advanced algorithms. The process can be applied in post-production as well as for live applications, allowing programme editors or newsroom staff to work with content that might previously have been unusable.”
Also making its first IBC appearance will be an updated version of DHD’s Multi-I/O Box stereo USB audio interface. Rather than D-Sub connectors, the new model has RJ45 connectors with StudioHub+ pinout compatibility. 12 GPIs and 10 GPOs are incorporated for external device control. The interface also includes two powered GPOs for microphone-arm LEDs. A compatible 1U RJ45-to-XLR breakout panel is available as well. All the other audio I/Os remain unchanged:
• Two microphones in and two headphone outputs.
• Four analog lines in and four analog lines out.
• Four AES3/EBU channels in and four AES3/EBU channels out.
A new version of the DHD Headphone Box will be on show. Just connect it with a standard patch cable to one of the headphone ports and you are equipped with headphone jacks in 6.3 or 3.5 mm, a potentiometer to control the headphone level and a GPI where you could connect, for example, a cough button.
The following new features of DHD Firmware 10.4 will be demonstrated.
• Flex Channels allow access to more signals within the system. A selector is assigned as an input source. Source selection is then performed from the corresponding selector source list rather than from the pool of fader channels.
• Channel Categories are provided for fader channels. This allows the input source list to be filtered for specific signals.
• Mic Preamp Control is now more flexible than ever. The A-Gain value of a mic input can now be set at any time without the need for assignment to a fader. You can use a touchscreen, the Views App or the API to change this A-Gain parameter.
• DHD control API – Companion Plug-In for Streamdeck (https://bitfocus.io/companion). To be available at https://github.com/dhd-audio under MIT licence.
• TypeScript Library for DHD control API on the Cores provides a function set for integration of DHD control API in third-party software.
• Go Library for easy integration of DHD control API in 3rd party software. This allows developers to build applications that interact with DHD devices, enabling seamless control and automation. The library is open-source under the MIT license, ensuring flexibility for a wide range of use cases. It is available now at https://github.com/dhd-audio.
• New Control API for DHD AES67 interfaces: secured connections using Tokens and HTTPS allowing complete control over the stream parameters and interface settings. Format is similar to the already-released Control API for DHD cores.
