An option is the Sennheiser TeamConnect solution, which comes in two versions: the portable TeamConnect Wireless features a series of wireless table mics suitable for smaller spaces, and the TeamConnect Ceiling 2 which is a ceiling mic which can be flush-mounted into standard false ceilings, suitable for medium to large spaces.Īn alternative popular supplier is ClearOne with a single array suitable for smaller spaces, and the individual ceiling array mics more suitable for larger spaces.īoth ClearOne and Sennheiser systems are Dante (audio over Ethernet)-compatible and allow multiple microphones to be daisy-chained together within large spaces. Traditionally rooms often have roving mics used for audience questions - but if roving mics cannot be passed around, another option would be to use either table microphones or ceiling-mounted array microphones. In the case of large group meetings in medium-sized rooms, or panel discussions that have multiple speakers including the audience, then it may be necessary to consider a more advanced microphone set-up. Boundary microphones also tend to pick up more audience audio which can be both useful (audience questions and discussions) and detrimental (coughs). MXL AC-404) may be sufficient for smaller spaces and have the advantage of being ‘always-on' but are adequate only if the presenter stands close to it throughout the lecture. during VIP lectures), without the need to connect their camera via a cable to the sound system in the room.īoundary microphones (e.g. Aside from excellent audio quality, an advantage of the G4 system is that it is commonly used by videographers allowing them to use a compatible wireless receiver to capture audio to external equipment (e.g. The G4 system is compatible with the earlier G3 system. The most common lavalier system at Oxford is the Sennheiser EW112p G4 system, operating in the licenced 606-614MHz range (or less commonly, the licence-free 863-865MHz range). However, presenters will often forget to wear them or to unmute them, and in these situations, it can be useful to have a boundary microphone as a backup, particularly since Panopto will fail to record at all if there is no audio source. An expensive microphone placed far from the presenter will not sound as good as a cheap microphone place much closer. Lavalier microphones generally offer better audio quality primarily because they are very close to the presenter’s mouth at all times. Most teaching spaces employ a combination of a gooseneck microphone attached to the lectern, wireless lavalier (tie clip) microphones for presenters who wish to walk around, and flat boundary microphones used as a backup audio and to pick up audience questions. Depending on the location of the Panopto PC, it may be possible to take an audio feed from this to use as the audio source. Often in larger teaching spaces there will be an existing amplification system. (NB: it’s important to stop the YouTube video when finished, rather than just turning down the room speakers, as unwanted PC audio cannot be separated later from the mic audio and could ruin a recording.) This is useful for capturing YouTube videos or other demonstrations where the PC audio output is important. In addition to the mic audio input, Panopto can also capture the PC audio directly. Panopto accepts only a single microphone audio input, so if using multiple microphones, they must be pre-mixed before being fed into the Panopto capture PC. Equipment AudioĪudio is usually the most important consideration when creating a recording yet is often the most overlooked. The presentation PC would capture PowerPoint slides, whilst the rear PC would capture camera video (usually from a ceiling-mounted or wall-mounted PTZ camera), audio (usually from multiple wireless and boundary microphones mixed through an audio mixer and/or DSP) and a video feed from the projector and/or visualiser. Using the remote recorder, Panopto recordings can be scheduled in advance. Located in a booth or rack, the rear PC is less likely to be accidentally powered down. Both would be Windows PCs, each with the Panopto remote recorder installed, which allows for simultaneous dual recording from two computers to a single Panopto session. Two capture computers are optimal in large lecture rooms: a front presentation computer as in the small seminar room, but also a second computer, often located in an AV rack or booth at the back of the theatre. In designing AV (audio-visual) infrastructure for automatic lecture capture, it is helpful to group rooms into two categories: small seminar rooms and larger lecture rooms. The remote recorder is recommended for all teaching spaces. The remote recorder for scheduled recordings is only available for Windows. The manual recorder for ad-hoc recordings can be installed on either Windows 7+ or macOS 10.13+. The Panopto recorder software comes in two flavours: remote and manual.
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