New smart and wireless speakers were the biggest announcements on the first day of the IFA technology show in Germany.

Audio firms Bang & Olufsen and Bose both unveiled new speaker systems, the former a large circular speaker that can be rolled backward and forward in order to control volume.

The Beosound Edge can be positioned on the floor or attached to the wall, but when on the ground its audio can be controlled by rolling it in either direction.

Bose positioned its new Home Speaker 500 as an alternative to Apple's HomePod and Sonos' line of wireless speakers, claiming it offered better quality audio as well as support for virtual assistants such as Amazon's Alexa.

Annual gadget convention IFA does not open until Friday, but some of the best-known names in technology, including LG, Samsung, and Sony, will showcase their own newest devices for the first time later today as part of previews ahead of the show.

The event is known for its mixture of cutting edge and outlandish new gadgets put on display.

LG has already confirmed it will show off its new 8K OLED TV as well as new smart appliances including a voice-activated wine cellar and wearable robot that gives more mobility to those with lower limb issues.

While fellow Korean firm Samsung is also expected to show off a new high-end television and may also further preview it's own upcoming smartphone speaker, the Galaxy Home, which it confirmed was in development earlier this month.

Sony is likely to discuss a range of new audio and entertainment products, and could also introduce a new smartphone in its Xperia range, a regular feature of recent previous IFA showcases by the firm.

More than 1,800 exhibitors will be on the show floor during the event, with new smartphones, computers, wearables and robotics devices expected to be widely demonstrated.